Is Mercon V compatible with ATF 4?

Valvoline's ads claim this fluid is “recommended” for Chrysler products. But, again, a fluid compatible with Dexron III or Mercon is not going to be compatible with Chrysler ATF+4 or ATF+5, nor will it be proper for either Dexron VI or Ford LV vehicles.
A.

What is the purpose of transmission fluid?

Transmission fluid is a slippery liquid that acts as a lubricant for all of the moving parts inside your transmission. In an automatic transmission, this fluid also serves as a coolant and a viscous fluid that transmits power from the engine to the transmission. A variety of fluids are used for different transmissions.
  • How often do you need to change transfer case fluid?

    If the fluid runs low or becomes contaminated, it can lead to failure of the differential. To avoid this issue, it is recommended that the transfer case fluid be changed periodically, normally every 30,000 miles, especially in vehicles that tow or use four-wheel drive often.
  • How long does it take to change the transmission fluid?

    A good shop should be able to do an engine oil change and a transmission drain and fill service in about one hour or less.
  • How often do you need a transmission flush?

    The manufacturer's maintenance schedule for many automatic transmissions doesn't call for fresh fluid until 100,000 miles or, with some Ford transmissions, even 150,000 miles. A lot of mechanics say that is too long and that it should be done at least every 50,000 miles.
B.

Is oil and transmission fluid the same?

Transmission fluid is used by your steering system to keep its parts moving smoothly. A couple of differences are the following: An engine oil is designed to deal with the products of combustion, whereas an automatic transmission fluid (ATF) does not see contaminants from fuel burning.
  • Can you use transmission fluid in place of oil?

    Is it safe to use automatic transmission fluid as an engine flush? ATF, however, is not formulated for use in automotive engines and shouldn't be used to replace a traditional engine-flush or cleaning product for several reasons. First, the detergency, or cleaning power, of ATF is much less than motor oil.
  • What is the color of transmission fluid?

    Clean automatic transmission fluid. New automatic transmission fluid has a bright to dark red, translucent color. The red color is the result of dye that is added to the transmission fluid for identification. Color is NOT an indication of the quality of the fluid nor the condition.
  • Can you put transmission fluid in your oil?

    It is my opinion you should get the "oil" changed as soon as possible and try not to run it too long. The transmission fluid will not be providing exactly what the engine needs in order to be properly lubricated and you could be causing your engine damage by continuing to run it with the tranny fluid in there.
C.

Do you check the transmission fluid with the car on or off?

To check your automatic transmission fluid, follow these steps: Pull out the dipstick. With the gearshift in Neutral or Park and the parking brake on, let your engine run. Be sure the engine is warm when you pull out the dipstick.
  • Can you put transmission fluid in your car?

    On most cars, the car must idling in park with the parking brake on and the transmission hot. Wipe the dipstick on a clean rag or paper towel, reinsert it and pull it out again to check the transmission fluid level. The fluid level should be between two marks labeled either "Full" and "Add" or "Hot" and "Cold."
  • Do I have to have my car running to add transmission fluid?

    Adding the Fluid. Keep your car's engine idle with the transmission in park and the parking brake activated. Your car's engine should be running when you add fluid to the transmission, but you want to have the transmission in park and the handbrake activated for safety reasons.
  • Do you check the transmission fluid when the car is hot or cold?

    To check your automatic transmission fluid, follow these steps: Pull out the dipstick. With the gearshift in Neutral or Park and the parking brake on, let your engine run. Be sure the engine is warm when you pull out the dipstick.

Updated: 19th October 2018

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