Originally posted by DarkOne

Originally posted by chipdogg I recommend (and use) Mobil 1 High Mileage 10W-30 (5w-30 in colder climates) synthetic engine oil in all of my rebuilds. Hasn't let me down yet.

I have personally destroyed synchronizers running Mobil 1 in the T350. It lacks any sort of friction modifier.

How were they "destroyed"? What failed on them? I've run it for past 8 years and have had 0 issues. Ed Peters ran it in his road race cars.

It's 99% the same as the original Mopar $18/qt fluid according to Ed after being given the breakdown of it.

No "friction modifier" is needed, it has the proper frictional coefficiency for the fibride material. There's no brass synchros in any, unless you have an earlier one with the 1-2 brass synchros.