lehman live edge slab
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I know the stihl Ultra isn’t the best oil by any means but we have a br600 blower and it’s consumed gallons of gas mixed with it at 50:1 still runs like a champ. And my buddy uses it in his tree service saws at 50:1 and his saws are relatively clean inside and have a quite a few hours on them. So must be at least adequate mixed at 50:1. Jasco fb rated so not great kind of a middle of the road. I still like the alco no smoke two stroke jasco fd rated oil been working great in my killing saws.