Now this will throw everyone for a loop! Dig this. In a 1965 Plymouth Manual that I have that covers all models including Belvedere Super Commando 426 Hemi it says, quote: Use only Automatic Transmission Fluid, AQ-ATF, Suffix "A" Part Number 1843314, (AQATF - 1470A), which is designed specially for Chrysler Corporation-built transmissions. No other fluids are recommended. Exceptions to this are the use of refined kerosene to aid starting in very cold weather and special dyes to aid in detecting fluid leaks. In addition, Transmission Sealer, Part Number 2298923, may be used in high mileage vehicles to correct minor seal leaks. If starting is difficult when the average temperature consistently ranges below -10 degree F., drain one and one-half pints of transmission fluid and replace with equal amount of refined kerosene. THIS SERVICE SHOULD ONLY BE PERFORMED ONCE DURING THE LOW TEMPERATURE SEASON. Thereafter, any replenishment should be with Automatic Transmission Fluid, AQ-ATF, Suffix "A". End Quote: In a 1962 to 1969MotorManual I have it has no fluid recommendations, it only says to use manufacture specified fluids. It does say to change it every 32,000 miles depending on the severity of driving, towing etc. One thing is for sure the Torque Flight is one of the best Auto's ever built, it usually will go for ever under normal conditions. It is a famed Automatic for it's early development of a no charge to the buyer for a three speed version of Automatic's. Wow! Kerosene, I don't think I will ever be putting it in my Transmission, but interesting, what ever gets it to go! I have always used Dexron lll. Now the Dexron/Mercon is what is best, regular or the high mileage stuff that Valvoline sells, they say it has all the best stuff in it, it seems to have the highest price too! Interesting stuff though, Dexron being Chrysler and Mercon being Ford now it's the mixture of both, scientific breakthrough I suppose????