dean wrote:
Because every professional user I have ever seen is using 10W30
engine oil. Now I'm not about to put that into my Stihls but I was
just wondering if I am wasting money on expensive bar oil?

Any comments?

Used 10W30 in my Stihl from the time I bought it until it was
"borrowed" by an uninvited guest - about five- years - and it worked
well for me.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto