Stihl oil in my old John Deere...helps lube the valve guides[/QUOTE
I dumped mine in my Cummins/dodge truck"s tank after I tore apart a fs85 trimmer ran on it.
What are you paying for K2? I can buy both K2 and Motul 800 at moto shops in my area, but I mail order it instead because it is alot cheaper. Don from this site recently bought a bunch of motul gallons for dirt cheap. I forgot what his source was. M0tul 800 and K2 are both great oils.