yamaha autolube - can I use synthetic and weaken the mix?

[jim*jimbo]

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.

[Airhead]

by all means run on whatever oil you like but leave the shimming as it should be you cannot adjust the pump output Jim

[DirtyDT]

As Airhead.

Use a good quality oil.

[jim*jimbo]

Thanks Guys