transmission fluid

[trooper632]

I have put dextron III fluid in an 86 cucv. the dipstick calls for dextron II, have I screwed anything up and if not do I need to drain it all and fill it up with dextron II. Right now the cucv dosent shift into 2nd until around 25-27 mph, which seems to be to high of an rpm, and then into 3rd around 45mph. when it does shift its a very hard shift, had to put about a gallon of the atf in it when I first got it, but it doesnt leak anywhere.

 

[CCATLETT1984]

dexron 3 is compatible with dexron 2 stuff.

has the level dropped any since you added?

you dont say if you have a blazer or a pickup, that seems a bit high for a blazer though and WAY high for a pickup. ( I hit 2nd @15mph)

 

[Somemedic]

Adjust the shift point by loosening the actuator on the side of the IP. I believe it points a little forward and if you back the 2 screws out, rotate the actuator more forward, and then tighten the screws up it will drop the points at which the tranny shifts. Looks like a black plastic doohickey with a couple of screws on it with oblong holes for adjusting. A couple of rubber tubes (vaccuum hoses) run into it.

This is of course considering you dont have a vaccuum leak which will throw the shift points off...

 

[AJMBLAZER]

Dexron II superceded Dexron I in all applications. It's an improved product and works everywhere I did.

Dexron III superceded Dexron II in all...

Dexron IV...III...

etc etc etc.

 

[tlm47201]

Re: RE: transmission fluid

Actually, its the opposite. Forward delays shifts, backward makes them sooner.

Adjust the shift point by loosening the actuator on the side of the IP. I believe it points a little forward and if you back the 2 screws out, rotate the actuator more forward, and then tighten the screws up it will drop the points at which the tranny shifts. Looks like a black plastic doohickey with a couple of screws on it with oblong holes for adjusting. A couple of rubber tubes (vaccuum hoses) run into it.

This is of course considering you dont have a vaccuum leak which will throw the shift points off...

 

[1956_4x4]

Like was mentioned above, check for vacuum leaks. The vacuum hoses on many of these trucks are shot since many still have the original rubber hoses.

Smitty

 

[trooper632]

It was a broken vacume hose that went to the side of the ip. cut off the break and slid it back on, shifts like a new one. thanks for the replys guys saved me alot of time.

 

[Westech]

I use type F in my 3 speed GM's. you get less slippage.