tranny fluid.
Joined: Nov 2001
Posts: 34,628
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From: Schiller Park, ILL Member: #317
For a 4L60E?
I would not recommend synthetic. Use regular Dextron III.
You can go to a shop to have the trans fluid fully flushed (about $50-100), or you can drop the pan and change the filter yourself, but that will only drain 4-5 quarts of fluid, which is less than half the total fluid capacity. But if you drop the pan often, then a full flush probably isn't necessary.
I would not recommend synthetic. Use regular Dextron III.
You can go to a shop to have the trans fluid fully flushed (about $50-100), or you can drop the pan and change the filter yourself, but that will only drain 4-5 quarts of fluid, which is less than half the total fluid capacity. But if you drop the pan often, then a full flush probably isn't necessary.
Joined: Nov 2001
Posts: 34,628
Likes: 2,547
From: Schiller Park, ILL Member: #317
No transaxle in your F-body.
Dexcool is the factory recommended coolant.
Diff fluid had different factory recommendations depending on year. Recommended for '98 is conventional 80w90 with GM limited slip additive. For '99+ is synthetic 75w90 with GM limited slip additive.
Dexcool is the factory recommended coolant.
Diff fluid had different factory recommendations depending on year. Recommended for '98 is conventional 80w90 with GM limited slip additive. For '99+ is synthetic 75w90 with GM limited slip additive.
Originally Posted by RPM WS6
For a 4L60E?
I would not recommend synthetic. Use regular Dextron III.
You can go to a shop to have the trans fluid fully flushed (about $50-100), or you can drop the pan and change the filter yourself, but that will only drain 4-5 quarts of fluid, which is less than half the total fluid capacity. But if you drop the pan often, then a full flush probably isn't necessary.
I would not recommend synthetic. Use regular Dextron III.
You can go to a shop to have the trans fluid fully flushed (about $50-100), or you can drop the pan and change the filter yourself, but that will only drain 4-5 quarts of fluid, which is less than half the total fluid capacity. But if you drop the pan often, then a full flush probably isn't necessary.
Joined: Nov 2001
Posts: 34,628
Likes: 2,547
From: Schiller Park, ILL Member: #317
Originally Posted by _JB_
Why don't you recommend synthetic? As long as the bottle state is compatable with Dextron III, why wouldn't it be ok to run? I run synthetic in my car for oil, tranny, and differential, and after what happened to this old 80's something pickup we had I won't go back to dino oil. Unless I have to for a breakin period.
IMO, Chuck is one of the best 4L60E builders in the country. I'll stick with his recommendation.
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