It's not free. They just make you think it is.
I use exclusively VES and so do many of my friends on all our AXYS sleds with 800 and 850 engines. None have had gummed up exhaust valves. Thousands of miles. Part of it might have to do with how hard you ride. And, how much WOT. We tend to ride to stay alive.Personally I dont think VES is all that great. And I think they changed the formula not too long ago because it was gumming up exhaust valves. Part of the reason I think they branded the EXTREME oil. "Here is our best oil for $55/ gallon! Use it, its good!" Yeah well its about as good as Mystik LOL
You should use mystik, valves on my assault are great at 5000 miles.Bought a case of Ams Oil Interceptor. Used VES extreme since new. Just pulled exhaust valves yesterday. Filthy again, gummed up real bad. Same thing last year. Maybe oil usage is too high. Ams Oil is $20.00 a gallon cheaper.