kennyo

Anyone run or switched to the rotella? I'm changing the oil this week and both are available. Rotella seems to have a good rep in diesels.

Hydrocruiser

Rotella is a good product however,,,,there is a forum actually debating this issue....here ya go

M-1 has the edge I feel..it's tried and true..


http://www.rotella.com/ubbthreads/sh...b=5&o=&fpart=1

kennyo

Thanks Hydro, I knew I should have just pm'd you.

Big Block Billy

Ok, Rotella is a Diesel engine formulated oil Peroid...
Thus being just so it is not formulated for a motor with an ignition spark advance. We can argue this out forever but, Rotella and similar oils work best in diesel aplications.
I was told this from more than one expert... including my Dad who drove over the road trucks for 50 years !!!
Rotella works well in Diesel trucks that have a reputation of running more than 1 Million miles ! with a complete teardown with minimal wear. But we're not driving trucks here on the h2o and have completely different issues as an over the road vehicle. I really believe that a hi performance boat needs a regular 25w 40 or 20w 50 normal oil to keep it where it has to be.
I was also informed that due to epa guidelines that the zinc has been removed from motor oils, and that this leads to excessive cam wear and other related problems . God Bless America !!! BBB

Hydrocruiser

The biggest difference between Rotalla and a similar gasoline engine oil are the agents in Rotella to control soot from the diesel combustion process that enters the oil.

I think new Rotella formaulations may be rated possibly for both gas and diesel? Check it out!

Wobble

This is why many of us have selected the m-1 vtwin 20/50 motorcycle oil as it has not been stripped of the beneficial qualities that were allowed in car oils.

Rebel_Heart

For the money, is the M-1 v-twin that much better than M-1 15-50? I am going to be changing oil this fall and debating which oil to select? Thanks.

Big Block Billy

I guess you mean the dertergents that mix everything together, instead of the soot(carbon) just floating around and creating problems. Especially getting behind rings and pushing them out...
I had seen a Diesel car engine many years back torn down by my dad with compression rings worn to about the thickness of a human hair !!! This b.t.w. is also caused by too much fuel or inacurate fuel timing on a Diesel. BBB