Over the years I have run Stihl, Poulan, Opti 1, and some others I forget. Basically I buy locally and am pretty much stuck with what the mower shop or the hardware shop next door has. Today I asked for Opti 1 but all the shop had was Oregon "it's the same stuff". I have no doubt it is just as good. The question is:
What (if any) is the effect on the saw of varying types of oil??
Harry K
What (if any) is the effect on the saw of varying types of oil??
Harry K