To give you an idea, the chart shows that at a fluid temperature of 70*F the fluid level should read about 22-23 mm on the dipstick. I marked mine up to 40mm at 5mm intervals. Transmission Pressure Port. I have seen the charts showing transmission fluid life and the lower the better regarding temperature but it doesn't apply in this case. so you can get a … At the approximate normal transmission operating temperature of 160-170*F, the dipstick should read between about 63-71 mm. An easier way of installing the transmission temperature sensor is with the pressure port on the site of your transmission. We teach the upper limit is 180 degrees F. regardless of the fluid type. I use a 36 in zip tie also for my LX with the NAG1 transmission. If the stick reads 20mm, you’re good to go. Transmission oil coolers must be used to reduce One of the aftermarket trans cooler companies has a chart comparing temp to life expectancy. Check fluid level with the engine running and the transmission in park. The key temperatures to monitor when towing are the transmission fluid, engine oil and coolant temperatures. The synthetic fluid is said to withstand higher temps but no one says anything about the seals withstanding the higher temps. When I find it I will post it as a sticky. Fluid levels to high may cause excessive temperature. Let say the transmission temperature is 140ºF and the chart says, at that temperature, you should be in the 16mm–23mm range. For transmission fluid, the ideal operating temperature is between 160 and 200 degrees. Temperatures from 230-240 have been reached with no damage to the transmission. (At least some things haven’t changed!) temperatures when the above conditions are encountered. Non synthetic transmissions would be hurting running them well over 200F. Each of these fluids will have different ranges that you will want to stay within. If you are seeing temps above 225 degrees on a regular basis you should check your fluid level. The problem you'll have is getting an accurate fluid temperature reading, (I have a DashHawk on mine that reads the fluid temperature.) Overall, if you are comfortable with dropping your transmission pan and drilling and tapping it, then this is the way to go for the most accurate reading of transmission fluid temperature. for the life of the fluid • Improves low temperature performance ensuring proper transmission function at all tempertures ... • High-quality transmission fluid for use in FNR5 5-speed automatic transmissions only (2006-2009 Fusion and Milan vehicles) Some manual transmissions also use this fluid. Eaton oil cooler systems must meet a minimum requirement of 3/4" water coolant lines and 8 GPM water coolant flow at 1500 RPM. I have a 2012 Dodge Challenger SXT V6, Curious to know, If the transmission (NAG 1) fluid level is checked after warm up,that level is checked with a corresponding temp chart. Automatic transmission fluid (ATF) is a special lubricant used in automatic gearboxes, hydraulic-power-assisted steering systems and in the transfer cases of 4WD systems of cars and trucks. The end user is ultimately responsible for maintaining transmission lube temperatures below 250 °F (121 °C). Just put marks 5mm apart on the tie.