Originally posted by Phil Rohtla:
Do a quick search for ATF+3. Some have switched to it from Redline MTL and have noticed an improvement. Given that it costs MUCH less, it could be a good way to go.


ATF does not protect near as well as a gear oil. It lacks the shear strength and clinging ability to properly protect & lubricate the transmission.

For reliability ATF+3 or +4 is not a suitable alternative to running a properly spec'd synthetic gear oil.
It can help out with worn or damaged syncro though. You do not want to run a synthetic fluid with any type of syncro damage and the added FM in this particular ATF helps.


I am currently running Pennzoil Syncromesh. It is a synthetic fluid based on GM's Syncromesh specs. I have had excellent results with it so far.
It also was only ~$4 a quart and the local AutoZone.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.