OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines Using Old 20/20w Oil in Briggs.

I have had the Nulon (which actually seems to be a pretty good oil) in a GXV120, but have only used it for somewhere near an hour. It will be drained before I next use it.

But if a briggs can run 200ml of black tar, it will love any oil it gets