This upgrade is a game-changer for anyone with a 2014-up 6L80/90E or 2016-up 8L80/90E transmission. The installation process was straightforward, and the immediate difference in performance was noticeable. The most impressive aspect is the significant reduction in operating temperatures - by as much as 20%.P0128 Definition: Coolant Temp - Below Thermostat Regulating Temp. The P0128 OBD-II trouble code is a generic powertrain diagnostic code (it has the same meaning for the Opel Astra as any other vehicle). Coolant Temperature. The coolant temp sensor is responsible for telling the Engine Control Module (ECM) the engine's coolant temperature.But the 6L80 transmission was developed from the ground up as an electric-over-hydraulic transmission, complete with microprocessor control. The manufacture of the 6L80 began in 2005 and was released in most GM vehicles in the model year of 2006. The transmission lasted until 2016, available in 6L80 vs 6L90 versions. 6L90 TransmissionThe General Motors 6L80-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV’s. In this Drivetrain 101, we’ll analyze all of its most prolific problems, solutions and upgrades. Become a 6L80-E transmission expert now!On a Chevy Silverado 2014 / 5.3 engine 6L80 transmission it won't start when transmission is at operating temp in park or in neutral. It does start when temperature lower to 70 c It does start when temperature lower to 70 c6L80 / 6L80-E; 6L90 / 6L90-E; 8L45 / 8L45-E; 8L90 / 8L90-E; 10L80 / 10L80-E; ... Maximum Operating Temperature 302°F (150°C) Inlet Port Size-6AN O-Ring Boss Female Outlet Port Size-6AN O-Ring Boss Female Maximum Operating Pressure 300 psi (20.68 bar) Max Recommended Flow Rate Up to 5 GPM (19 LPM)Oct 11, 2019 · Typically, the shudder will occur during light throttle operation at 20-80 mph (typically 40-50 mph) with the transmission between 122°F – 158°F (50°C – 70°C) operating temperature. If the converter is in full lockup (0 RPM slip), such as when engine speed exceeds 1600 rpm, the shudder will disappear.The 6L80E is a robust six-speed automatic transmission commonly found in a range of vehicles, including trucks, SUVs, and sports cars. ... provide the extra power and torque needed for these tasks while ensuring that your transmission operates within safe temperature ranges. This results in more confident towing and hauling experiences. Better ...The P0128 OBD II trouble code indicates that your Honda Civic's engine coolant temperature has not reached its required operating temperature within a certain amount of time after starting the car. This code can appear as soon as you start your vehicle, or it can also occur while driving. It's essential to address this issue.Information about GM's 8-speed 8L90 M5U Hydra-Matic transmission, including details, specifications, vehicle applications, and more.Substrate Temperature >= 50 ºC >= 2 Fail Time (Sec) Ignition Voltage >= 18 Volts Note: either fail case can set the DTC Ignition Voltage Lo >= 8.5996 Volts Ignition Voltage Hi <= 31.999 Volts Substrate Temp Lo >= 0 ºC Substrate Temp Hi <= 170 ºC Substrate Temp Between Temp Range for Time >= 0.25 Sec 11 OBDG07 TRANS Diagnostics 6L80/6L90 ...6L80e Trans temp . Are there any tables that I should be specifically looking for that will help with keeping the transmission temperature down? The combo is a a 2014 Head,cam,2.9 Whipple 5.3, reg cab Silverado with a 3000 stall converter. Right now I have the converter set to lock up in 4th and up.6L80, 6L90 2011 - 2016 ATS 4DR Luxury Sedan, ATS 4R Performance Sedan, ATS 4DR Premium Sedan MYA, MYC, MYD, MYB 24275874 6L45, 6L50, 6L80, 6L90 2010 - 2013 Caprice 4DR Police Car (2011-2013) MYA, MYB, MYC, MYD 24275872 6L80, 6L90 2007 - 2012 STS V8 4DR, STS-L 4DR, CTS 4DR, CTS HFV6 4DR, STS 4DR, STS V 4DR, STS 4DR (RHD) MYC, MYB,The full service manual for '12, for the 6l80 has a 'reset' procedure, which resets the various learned parameters to their default values, and the transmission then relearns as you drive around. ... The Adapts function is to be run at normal operating temp, above 158 degrees. Mine rarely gets that hot either. To heat up the transmissions we ...GM indicates the normal operating range for a 6L80 transmission (without thermostat) is 180-200 degrees. I wont be able to help with your tune, but I've been monitoring transmission temperatures for over a year. Here are some basic observations Higher speed = higher temperatures Changing gears adds heat rapidlyLower operating temperatures; no loss of ground clearance; bolt on replacement; LG track and street proven; ... Pan fits any 6spd auto 6L80/90E equipped vehicle including the 2014 C7 Corvette. Great for street cars, drag racing, autoX, or road course work. RedLine D6 ATF suggested.Typically, the shudder will occur during light throttle operation at 20-80 mph (typically 40-50 mph) with the transmission between 122°F - 158°F (50°C - 70°C) operating temperature. If the converter is in full lockup (0 RPM slip), such as when engine speed exceeds 1600 rpm, the shudder will disappear.Description. Superior's part # STL-6L80E TransLab Engineered® 6L80E/6L90E valve body upgrade kit Corrects, Prevents, Upgrades and RETRO-FITS all 6L80/90 GEN1 & GEN2 valve bodies to GEN3 2014- up features without changing castings or plates. Product categories. Manufacturer.Dec 26, 2018 · P2723 on 6L50 (RPO MYB) 6L80 (RPO MYC) 6L90 (RPO MYD) equiped vehicles. In addition, the MIL may be illuminated and default actions may be present depending on the codes that are set. P0756, Shift Solenoid (SS) 2 Valve Performance – Stuck Off will set if: • The engine speed is greater than 500 RPM • High Side Driver …should be at normal operating temperature, which is 82°C to 93°C (180°F to 200°F). Get the vehicle warmed up by driving about 24 km (15 miles) when outside temperatures are above 10°C (50°F). If it is colder than 10°C (50°F), drive the vehicle in 3 (Third) until the engine temperature gauge moves and then remains steady for 10 minutes.Jun 24, 2023 · Hi everyone got a little bit of a question about the temperature of the transmission fluid but I'm not sure it should be a concern yet 2011 GMC sierra 1500 with the six speed 6L 80 E transmission. on the weekends I pull a trailer and for the most part it does excellent, no shifting problems, no problems at all actually but the past three ...The newest Dexron 6 is designed to still work all the way to 260 as the trannys are. True you are losing a little clutch plate life, and runing at 210 is preferable. Remember new engines run at 200 f and trans cooler lines go through the radiators. Wannabe.Better Fuel Efficiency: A well-tuned 6L80E can contribute to improved fuel efficiency. By optimizing shift points and torque converter lockup, tuning can help your vehicle operate more efficiently, potentially saving you money at the pump. Customized Performance: Transmission tuning is not a one-size-fits-all solution.I show a teardown and inspection of a 2011 6L80 transmission in detail while covering all of the updates made to the transmission between 2007 and 2021. I al...Jan 1, 2024 · Exceptional torque rating. Developed with upgraded internal components, Chevrolet Performance’s SuperMatic 6L80-E 6-speed automatic transmission offers an …The 6T30/40/45 is chain driven (like a. 4T65E) with a converter. driven pump. Except the 6T41/46 GEN III which uses an off axis chain driven pump like the 6T70/75. The 6T70/75 is gear driven with an off axis chain driven pump. The ID tag is always the best way to identify what unit you have. 6T45 vs. 6T40.P0128 Definition: Coolant Temp - Below Thermostat Regulating Temp. The P0128 OBD-II trouble code is a generic powertrain diagnostic code (it has the same meaning for the Ford Escape as any other vehicle). Coolant Temperature. The coolant temp sensor is responsible for telling the Engine Control Module (ECM) the engine's coolant temperature.6 days ago · The ideal operating temperature of transmission fluid is 175 degrees. Overheating occurs after the temperature surpasses 200 degrees, ... Just wanted to share this because it just happened to me. 2016 Silverado 1500 with 6L80 tranny overheating because engine coolant thermostat got stuck open.6L80E fluid temperature? Jump to Latest Follow 21 - 24 of 24 Posts. 1 2. N. nickpohlaandp · Registered. Joined Oct 9, 2016 · 223 Posts. Discussion starter · #21 · Nov 3, 2016. Only show this user ... Coolant temp gauge is always around 210 but it's inaccurate, runs much cooler according to the scanner at work and gets plenty of heat in ...Just replaced my 6L80 transmission in a 2016 Silverado LT 1500 4x4. On dash trans fluid temperature says -40. Did I purchase a Re man with a bad temp sensor possibly . Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. Leveled17yeti.I really need to know the normal operating temperature for my 2010 SS L99 Engine and Transmission. 13,000 miles My readings are as follows: Engine oil temp: steady at 230-235 (86 degree weather) Transmission temp: 240 (with a bit of aggressive driving, never exceeded 240) 230-235 normally6L80, 6L90; Dodge-Cummins Diesel; ... Normal operating temperature is 96°C (206°F) to 101°C (215°F). Make sure to consult your owner's manual or shop manual to verify you're filling the unit properly. Dipstick crosshatching and proper fluid fill level varies between application and model year.2009 6l80, High Mileage 3rd/4th gear Shudder. Reaching out for some insight on my GMT900 truck. I have a 2009 crew cab 5.3L 6L80 with 222,000 miles on it. Original transmission, fluid and filter changed every 60K or so. Currently have 40K on some Amsoil trans fluid.Apr 10, 2024 · First introduced in 2005, the 6L80 transmission is a 6-speed automatic gearbox that is made by General Motors at their Willow Run transmission factory in Ypsilanti Michigan, and at their transmission plant in Toledo, Ohio. They are designed for RWD and AWD/4WD applications, and feature clutch-to-clutch operation with a wide gear ratio for ...6L80e Transmission issue. Almost always let my engine warm up at least halfway before driving. Use 2wd almost exclusively, 4-hi maybe once a week during for very short distances. Last night I noticed that my RPMs seemed to be a bit jumpy, hardly noticible on the tacometer but I could hear it happening around the 1000-2000 rpm range while at ...May 27, 2023 · Higher operating temperatures: As contaminants accumulate in the transmission fluid, it thickens and loses its ability to cool the transmission leading to high …Jun 24, 2023 · Hi everyone got a little bit of a question about the temperature of the transmission fluid but I'm not sure it should be a concern yet 2011 GMC sierra 1500 with the six speed 6L 80 E transmission. on the weekends I pull a trailer and for the most part it does excellent, no shifting problems, no problems at all actually but the past three ...In fact, if the temperature could be kept at 80 degrees C, the ATF would last a significant amount of time (and distance). But once the fluid temperature increases beyond this, the life of the fluid begins to decrease. Every 20 degree increase in operating temperature above 80 degrees C decreases the life of the ATF by half.I really need to know the normal operating temperature for my 2010 SS L99 Engine and Transmission. 13,000 miles My readings are as follows: Engine oil temp: steady at 230-235 (86 degree weather) ... (6L80 / 6L50 / TR6060 / AY6) 4: 02-17-2011 09:06 AM: Normal coolant temperature: Sturmer: Mechanical Maintenance: Break-in / Oil & Fluids ...Mar 2, 2023 · Also, transmission fluid isn’t flammable. However, it is combustible, so it will ignite if it’s heated above the flashpoint. Most transmission fluid flashpoints are between 302°F and 383°F (150 – 195°C). There’s a normal situation for everything that occurs with cars, and the transmission temperature is no different.6L80E Specs + Identification; TH400 Transmission Specs, ID, and Common Problems; ... or high transmission fluid temperatures. These issues can be caused by various factors, such as high operating temperatures, worn-out gears, or a failing cooling system.Support The Channel 👇🏼👇🏼http://aaroncates.co_____This video was posted on 4/14/21 currently at 11,46...2 days ago · 8L90E Specs, Performance, and Identification. The 8L90E is an 8 speed automatic transmission developed by General Motors and introduced for the 2015 Model year. It is currently phasing out the 6L80/6L90 transmissions (although it hasn’t done its all the way yet. Structurally, the 8L90 is similar to the 8L45, except that it is made to handle ...Time to learn how the transmissions knows when to shift and learn a few top secret tricks along the way!Link to PPT Guides and Bluecat Tool:https://drive.goo...This may lead to an under-fill condition. Start the engine and move the shift lever through each gear range. Pause for at least 3 seconds in each gear range. With the engine still running, remove the DT 47784 (1), J 45096-30 (2), and J 45096 (3) and then check the fluid level. Refer to Transmission Fluid Check .6L80 MYC Automatic Transmission Built in the Silao Mexico Plant 2 Note: Please refer to SI document 2610129. The following information only applies to ... These concerns may only be present when the transmission is at operating temperature. Recommendations / Instructions These concerns may be due to loose stator support to pump cover bolts ...GM 6L80: Diagnostic Trouble Codes Code Reference P0218 Trans Fluid Temp exceeds 270 degrees P0562 Voltage in system found to be low < 11v P0563 Voltage in system found to be high >18v P0601 Read only Memory found in TCM P0602 Not Programmed Trans module P0603 memory reset long term P0604 Random access Memory P0634 Over temperature TCMNeed a operations consultant in Toronto? Read reviews & compare projects by leading operations consulting firms. Find a company today! Development Most Popular Emerging Tech Develo...550. E38 or E67 should work. E38 seems to be the most common. Neither will work with a cable operated throttle body. Whatever 6L80 compatible controller / platform you decide to use (Camaro / Corvette / Truck), you will also need to use the matching electric throttle body and electric gas pedal. 08-29-2014 #3.Typically, the shudder will occur during light throttle operation at 20-80 mph (typically 40-50 mph) with the transmission between 122°F - 158°F (50°C - 70°C) operating temperature. If the converter is in full lockup (0 RPM slip), such as when engine speed exceeds 1600 rpm, the shudder will disappear.levels. Some 6L80 applications do not utilize a dipstick. Instead a plug has been placed into the dipstick hole. The plug can be removed and the hole can be used as a fill point for transmission fluid. To check the fluid level the following procedure should be followed: ·The transmission temperature must be between 86-122 °F (30-50°C) a scancold to operating temperature drive cycles. The truck should be returned to the customer for the mileage accumulation. 5336317 Example of GDS Screen Print. Important: Obtain a single page screen print from GDS that shows the TCC shudder event. This screen print must be attached to the Repair Order hard copy for reference. A screen print can be ...8. Verify transmission fluid temperature (TFT) is between 86°F and 122°F. 9. If fluid does not drip from opening (underfill condition), add fluid until fluid drips slightly. 10. If fluid runs from opening when Level Control Plug is removed (overfill condition), allow fluid to flow until only a slight drip remains. 11. Reinstall Level Control ...It takes a little little longer to reach operating temp, but that's it. So drive easy for the first few miles or until you can get above 100f or so. 2018 1500 LT2 Z71 CCSB 5.3, Diablew tuned, Airaid MIT, Carven progressive catback, Lasfit LED D5S, DD SS3 MAX fogs, Morimoto LED's for the rest, heated wheel retrofit, scamsoil in all the reservoirs.Oct 6, 2008 · Utah. Jul 23, 2018. #4. The average rule of thumb for transmission temps are 100 degrees over ambient temperature-in GM half ton trucks with the six speed transmissions. This is discussed to death on the various truck forums on the Internet. BTW-the Dex 6 has been tested up to 275 degrees. Last edited: Jul 23, 2018.6L80 6L80E DELETED Cooler Thermal Bypass Valve Cooler Trans Temp ~FREE SHIPPING~. This one's trending. 47 have already sold. Breathe easy. Free shipping and returns. FreeStandard Shipping. See details. 30 days returns. Seller pays for return shipping. See details.P2723 on 6L50 (RPO MYB) 6L80 (RPO MYC) 6L90 (RPO MYD) equiped vehicles. In addition, the MIL may be illuminated and default actions may be present depending on the codes that are set. P0756, Shift Solenoid (SS) 2 Valve Performance - Stuck Off will set if: • The engine speed is greater than 500 RPM • High Side Driver (HSD) one is enabledAn operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The device will operate effectively within a specified temperature range which varies based on the device function and application context, and ranges from the minimum operating temperature to the maximum operating temperature (or peak operating ...Jan 23, 2008 · I've been told 190 to 200 is about average. birdy Discussion starter. 28 posts · Joined 2007. #4 · Jan 25, 2008. I do have a temp gauge, it was creeping over 206 and then it drops rather quickly then few minutes later could be high again? I think I need to check the fluid level (where can you check and add tranny fluid?) If its going up and ...This manual covers all Tempest,Lemans and GTO motors. One more interesting note is found in the 65 owners guide and says normal operating temp should be 180 or above . If gauge reads 245 take immediate action to find the cause. The following are the items I changed or added with little or no effect 1) high flow 180 thermostat 2) high flow water ...Find helpful customer reviews and review ratings for WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC 6L80 6L90 8L90 Sure Cool System Upgrade STL010 at Amazon.com. Read honest and unbiased product reviews from our users. ... Operating Temp was 185-195 now 140-150. Wish I found this before I had to replace the …This manual covers all Tempest,Lemans and GTO motors. One more interesting note is found in the 65 owners guide and says normal operating temp should be 180 or above . If gauge reads 245 take immediate action to find the cause. The following are the items I changed or added with little or no effect 1) high flow 180 thermostat 2) high flow water ...The optimal temperature range for transmission fluid is 175 to 220 degrees. Above that, for every 20 degrees bad things happen, starting with formation of varnish at 240 degrees, followed by seals hardening, plates slipping, seals and clutches burn out, carbon is formed, and, ultimately, failure.6L80 Performance Transmission Rebuild Kit - CDT Level 4. Kit is designed with 45-tooth 4-5-6 clutch plates. CDT's Billet 4-5-6 clutch hub and intermediate shaft (CDT part number 104680-45) is included in this kit. The 4-5-6 clutch pack provides 50% more surface area than a stock clutch set up. The 3-5-R clutch pack offers 50% more clutch area ...Dec 17, 2022 · Drag Racing - 6L80 Minimum Trans Temp pre-Burnout - On my '12 GS drag car I was running the 6L80 with a B&M Hi Tech trans cooler in series with the cooler in the DeWitt's radiator. I could never keep the trans temps down where I wanted them. At the suggestion of my tuner I bypassed the radiator and added a Setrag...Feb 28, 2022 · 18. Switch the TransFlow DT-45096 to Flow and start the engine: 18.1. Add a maximum of 4 quarts of HP Fluid to the transmission, turn the TransFlow switch to idle once 4 quarts have been added, while allowing 4 additional quarts of oil to fill the DT-graduated bucket (Reducing fluid level in the TransFlow from 16–12).Discover the different types of Java Operators, how each type is used and what they can do for your programming code. Trusted by business builders worldwide, the HubSpot Blogs are ...2 days ago · 6l80 Transmission Cooler Flow Direction. The transmission fluid low of the 6l80 goes as follows: Bottom line leaving the transmission to lower radiator port. Lower radiator to upper radiator port out to external transmission cooler. External transmission cooler to upper transmission cooler line port. If you do not have an external transmission ...The new valve has a 70 stamped into the bottom of the valve. The "70" stamp is visible on the valve when installed on the transmission. The revised TBV has a full open temperature of 158f (70c). The previous TBV had a full open temperature of 194f (90c). Bulletin No.: 21-NA-199. December, 2021. Page 3.Sep 17, 2021 · Compatible with all models except early, 1st design 6L80 plate 24246916. Helps cure: Code P0751; 1-2-3-4 Clutch burned; 3-5-Reverse clutch burned; Cruise control disabled; Required. Recommended. 6L45, 6L50, 6L80, 6L90 Oversized TCC Regulator Valve Kit 104740-07K. Helps cure: Code P0741, P0742; High TCC slip RPM;We created a detailed guide showing all the steps necessary to flush your 6L80 transmission and change the filter. This guide can also be used to do a transm...One of the more common issues that arises when swapping 6L80 TEHCMs is due to a running change made sometime between 2013 to 2014. New instrument clusters now provide Transmission Fluid Temperature data. This means the TEHCM is fitted with a program to provide both Transmission Temp for the TCM and for the Instrument Cluster.Reducing 6L90E temperatures. I've been trying to reduce my 6L90E transmission temp for a while now. It's in a 72 chevy 4x4 with np205 transfer case and dual exhaust. The transmission on a 70 F day runs at 185 F, the issue really starts when climbing. It doesn't matter if it's a curvy road with a lot of shifting or a straight long grade temps ...Coolant temp and oil pressure channels not reading. Both sensors are active on the dash read out. As far as i can tell tho the signal is not reaching the ecu. Both read in the negatives on the scanner channel list. Coolant for instance in reading -38* while the dash read out for coolant temp climbs and sits at normal operating temp as if ...Immediately accurate fluid level check (without warm-up cycle), reduce average operating temperatures by up to 20%. Reduce the risk of overheating when loading, and increase the ATF life. For 14-up GM 6L80/90E &16-up 8L80/90EIn all applications, the engine is matched with GM's Hydra-Matic 6L80 six-speed automatic transmission. ... allowing the 5.3L to reach optimal operating temperature more quickly, yet reducing ...Oct 24, 2022 · According to one mechanic, the 2007 Silverado’s transmission cannot exceed 300 degrees F. The 2011 models and maybe 10 and 12 as well, should not go above 270 degrees F and definitely not above 285 degrees F. That was taken from a direct GM quote. Some dealers put the mark at 212 degrees F to be on the very safe side of things.Immediately accurate fluid level check (without warm-up cycle), reduce average operating temperatures by up to 20%. Reduce the risk of overheating when loading, and increase the ATF life. For 14-up GM 6L80/90E &16-up 8L80/90EQuestion about transmission temps, 4L80E. I have a 95 Win Brave, 454 with the 4L80E trans, I put a transmission temp gauge on it. Average temp pulling a Jeep (3400LBS) on flat hwy is 180, which I am comfortable with. Temp is at 180 even without towing Jeep. Went out this weekend for a camp out, drove up 6% about a 15 mile stretch, trans temp ...6L80e won't "Fast Learn". Got a swap project in the shop that keeps saying "Temp Lo" when I try to "Fast Learn" the TCM. Its a L83 with a 6L80e that came out of a rolled Tahoe. We put it in a 78 Scout. Have studied up on all the forums, Googles and inter web and everybody says to get trans fluid up to 170 degrees, put it in drive and click the ...levels. Some 6L80 applications do not utilize a dipstick. Instead a plug has been placed into the dipstick hole. The plug can be removed and the hole can be used as a fill point for transmission fluid. To check the fluid level the following procedure should be followed: ·The transmission temperature must be between 86-122 °F (30-50°C) a scanNov 12, 2018 ... GM 6L80 Transmission Fluid & Filter Change - Service Guide! ... Transmission Temperature Before and After on a 6L80 Chevrolet 1500 Check This Out ...6L80/90 Don't see it too often in later model units but the 3-5-Reverse clutch drum does like to leak at the base welds causing flares, slips and other related drivability symptoms. ... Also watch the trans temp gauge. - Drop the pan and look at the fluid as well as bottom of the pan. Also pull the filter and check to see if it's clogged.First introduced in 2005, the 6L80 transmission is a 6-speed automatic gearbox that is made by General Motors at their Willow Run transmission factory in Ypsilanti Michigan, and at their transmission plant in Toledo, Ohio. They are designed for RWD and AWD/4WD applications, and feature clutch-to-clutch operation with a wide gear ratio for ...Extreme Temperatures: Operating the vehicle in excessively hot or cold environments can put additional stress on the transmission, impacting its performance and potentially accelerating wear on components. What Are The Symptoms Of GM 6L80 Transmission Problems?. 6L80; Browse All Units; ... As operatingThe typical transmission life expectancy for a 6L80 The General Motors 6L80-E & 6L90-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV's. ... My 2012 Chevrolet 2500hd stops pulling once it gets to operating temperature and I can shut the switch off and back on and it will pull again for about a ... Automatic Transmission Oil Cooler Hose Assembly OS compatibility 6l80e limp mode. I got an engine and transmition from a 2014 Yukon Denali wreck with 62,000 miles in them to swap in my firebird. Removed VVT, DOD and installed a ls3 crate engine intake/throttle body and injectors. Had a friend of a friend modify my harness and remove vats and never could get it to fire, and HPtuners stopped ...These cars run normally from 180 to 210 which is where they are supposed to run. 180 is not too cold. My coolant temperature stays pegged at the 11:00 hash mark once the car is warmed up. That is how it has been from day 1. If it started to fluctuate around that mark, I would be worried about a sticking thermostat. We can push 215-220F towing a ~6000# trailer up and down s...
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