is anyone uses the royal purple max-cycle synthetic oil
is it good for my wr-400.
I'm using the 20-50 stuff in my 05 WR450. The dealer that I bought the bike from was really high on the stuff after dyno testing a bunch of synthetics.
I use the Royal Purple Racing 51 in my 2000 Wr 4000 from day one.... Engine is still original and I run it hard and fast. Racing 51 is a 20w 50 viscosity. RP is one of the best Synthetics out there....
are you guys running full syn or a blend, my mech says a full syn can experience run off " oil doesnt stick to vital parts if bike sits too long " ...???
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