what brand and weight of oil is best for my wr . i run yamalube 4r (or r4) but thats a little steep in price .also whats are some opinions about going to a wet sump?

use the "SEARCH" feature on oil.

You will get approximately 27,384,859 hits on engine oil.

wet sump REQUIRES MUCH MORE FREQUENT oil changes >> for MX, it is OK, since you should change your oil after every race anyway.

If you don't like blowing $$ on oil changes, wet sump would be like going backwards.

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