paul n haylock Posted February 24, 2013 Report Share Posted February 24, 2013 Hi, I have just bought an O.S.S.A, 350 (310cc) trials bike and wondered what the correct 2 stroke mixure would be for it. I have no manuals on the bike at all to check? Any particular oil brand would you recomend? Quote Link to comment Share on other sites More sharing options...
twinshockdude Posted February 24, 2013 Report Share Posted February 24, 2013 use a good semi synthetic oil at 50 -1 Quote Link to comment Share on other sites More sharing options...
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