Seafoam Motor Treatment

[Thorpe]

I look at it this way... Ever run your posi rear axle without limited slip additive?

[camoweasel]

Im not sure the 15w-40 is safe for wet clutches either. I use it in my diesel John Deere garden tractor and nowhere on the bottle did it say it was safe for wet clutches. Which I wouldnt really expect since it is primarily a diesel engine oil.

This is how bad information gets spread around the internet. Diesel oils, especially Rotella are all rated and tested for Allison C4 transmissons; which are nothing but (wet clutches) used in bobcats and skidders!! So....there really isn't much difference between a C4 transmisson and a motorcycle transmssion....the clutches basically are bathed in oil?? Also if you look closely on the back of the new Rotella bottles you will see that there is a JASO certification meaning that Shell had actually put there oil through the motorcycle oil certification and it passed!! Problem is, Rotella is and always will be marketed as a diesel oil. As soon as they start marketing it as a bike oil, the price will jump leaving alot of diesel guys very peede off and looking for a new favorite oil. Don't believe me, go look.

[atc007]

This thread says it all:
http://www.3wheelerworld.com/showthr...o-types)/page5

The oil has been used for many many years and a Factory Honda Racer is recommending it so I think it would be safe.

As for regular oil wrecking clutches. Yes I bought a honda off my brother in law that had it for years. He ran regular cheap motor oil in it and it did ruin the clutches. So much that I had to change them.

Bottom line most oils are no good for wet clutches. If I remember correctly it has to be SJ rated which Rotella 15W40 is.

My opinion is,you probably had to change the clutches,,because they needed replaced. Not because of an oil he used 3 or 4 years prior. JMHO!

[nicker71]

Here in Missouri many xc racers have been running rotella in their race quads for years without any adverse effects. Actually rekluse cluthes recommend it with their clutch systems. I run it in all my 3 wheelers as well as my race bike and never noticed my clutch slip.