Transmission Oil

[kifried]

Any recommendations for transmission oil for my 200r4?

 

[megaladon6]

stick with non-synthetic. if it's a stock driver you can use dextron-III. for high performance i BELIEVE dextron-V will work much better. hopefully someone else can confirm this.

 

[kifried]

it's not a stock driver. It will eventually become a frequent driver but it's got a rebuilt olds 350 mated up to the 200r4.

 

[KrisW]

I run type F in all of the old (pre-90) GM transmissions. It just has extra friction modifiers in the oil that helps the clutches grab better. It's a real plus in transmissions with lots of miles.

The newer dexron is basically the same thing. It's old dexron with friction modifier added in because the newer GM transmissions are built like the old fords. They run smooth clutches with the friction material in the oil. Old GMs used to put friction material in the clutch material and then run an acidic 10w hydraulic oil called dexron...