Gearbox Oil About

I'm using 0W-40 Rotella T6 and it works OK. I had 5W-40 T6 before and can't tell any difference.



I doubt any oil will get rid of the typical clutch drag on a wet clutch. The only time I get clutch noise is if I'm in a gear too high for the conditions.



Well this one has more drag than I'm used to. The 5-40 is what my sons SV uses and I'll switch the bmw over. As well as the fleet. Which will make things easier.
 
OK so I'm bringing this up. Hate oil threads. Anyway I have had a couple of cases of Bel-Ray 10W-40 Mineral Oil. I haven't been real happy with it in the Gassers. However I can't argue with free. But it's all used up.

I'm 99% sure I'm going to switch to Rotella 5W-40, T6. Full synthetic. Just double checking myself that with that. That's pretty much what all our machines will switch to.

Any issues?

That's what I use and it's been great. Feel is better, engagement improved. Zero chirp now too. I will stick with it. Mind you I can only compare to the factory fill on my '13 300, but the difference is remarkable.
 
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