I use Rotella T4 Diesel Oil in every vehicle I own, including my lawn mower, I have done so for as long as I can remember. There are people I know who are adamant that it can not be used in vehicles that have a dry clutch
What I want to know is why not ? that make no sense to me whatsoever. What am I missing ?
I think they are missing the part where the clutch is outside the crankcase. Plus, anything 40 weight is already well on the way to motorcycle oil in the first place. On ADV, there would already be a meme posted saying “Not this crap again”.
Not that you need my permission, but you’re doing just fine with the program you are already running.
Illegitemi non carborundum est!
How old a BMW do you own , mine are a 2000 and 2011 GS's they have dry clutches that are single plate, modern liquid cooled bikes use internal wet clutches they may slip with full synthetic oil T4 is the original T5 Semi Synthetic T6 full synthetic. Often with wet clutches people prefer aftermarket plates or springs .
Rotella is JASO MA1/2 compliant according to the label on the container (I just checked a T6 container). Friction modifiers are added for the benefit of engines not clutches, so a wet clutch that shares oil with the engine rules out the use of an oil with a friction modifier additive. I dry clutch is irrelevant when deciding whether or not to use an oil with a friction modifier.
