jim*jimbo Posted August 4, 2012 Share Posted August 4, 2012 Hi Guys, I've got a 31 year old TY175 which runs on mineral two stroke oil on the standard autolube system - the book says its about a 30:1 mix ratio. Does anyone know if I can swap over to fully synthetic oil on a leaner mix without harming the engine? I believe the oil/petrol ratio is adjusted by re shimming the pump? Cheers, Jim. p.s. will update my profile this weekend. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 4, 2012 Moderator Share Posted August 4, 2012 by all means run on whatever oil you like but leave the shimming as it should be you cannot adjust the pump output Jim Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted August 4, 2012 Moderator Share Posted August 4, 2012 As Airhead. Use a good quality oil. Link to comment Share on other sites More sharing options...
jim*jimbo Posted August 4, 2012 Author Share Posted August 4, 2012 Thanks Guys Link to comment Share on other sites More sharing options...
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