Fluid Choices

I have been using Amsoil synthetics in my race car and tow truck for years. Their Universal in my D-350 diesel w/overdrive and Super Shift, which is similar to a Type-F, in the race car.

Synthetics are much more resistant to heat and breakdown than conventional fluids. Extra insurance!

As far as I'm concerned, Amsoil is the best. :thumleft: I obviously trust it as I travel around 20,000 miles to race per year with the truck. My race transmissions hold up well running mid-11's, wheels-up, with a converter that flashes to around 5,000 rpm and a car weight of over 3,530lbs!

Amsoil source and info:
http://www.thelubepage.com/


As for the problem Kako has, That's strange! It's not like the fluids have any significant viscosity differences that would promote leakage! However, if the wrong type is used and there is slippage and heat, it could cause erratic shifting, possible foaming or overheating and perhaps the heat could affect the seals! It's important to use the proper fluid for the application as there are many: Variety of Dextron, Type F, variety of Mopar types, Mercon, etc. Few are "universal" and I would only trust the ones labeled "Universal" if they are a name brand company, like Amsoil! :wink: They should at least list which other fluid specs it meets to use as a replacement.