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-   -   synthetic oil/trans fluid? (https://www.gmforum.com/1992-1999-91/synthetic-oil-trans-fluid-185895/)

ktfd45 11-21-2002 02:04 PM

synthetic oil/trans fluid?
 
Do any of the hard core Bonneville drivers use this stuff? Good results or bad news?

Delirious0413 11-21-2002 06:25 PM

Yes, I use synthetic oil. It was my dad's car before i got it and he always used synthetic oil. my car has almost 130,000 and the transmition seems to be great no problems. The only thing that i don't like is the cost of the stuff. Plus, once u use it, you really can't go back. I recomend it.

willwren 11-21-2002 06:33 PM

It is strongly reccommended by jr's3800, one of our local tranny gurus, that you do NOT use Synthetic trans fluid in a 4T60 or 4T65! It's too slippery, and after you realize you have slippage problems, it's too late. You can't just flush it out and replace it. Run Synth in the engine, but not the tranny. I'm switching over to a synthetic blend for the first time at my next pit stop.

95BonnevilleSESC 11-21-2002 06:48 PM

As the Bird man said.

BUCKMAN 11-22-2002 12:07 PM

Haven't had a proplem!!!
 
I put synthetic in about 30,000 miles ago and haven't had any type of slippage problems to date. Now I probably don't drive as hard as some of you guys but haven't had any problems.


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