OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines 2 Stroke Mix - Varies Widely... Why?

Even current manufacturers still specify a range of different mixes from 25:1 to 40:1 and 50:1 AVB and it is mostly to do with metals used. Naturally if using a particularly good oil you can get away with different mixes but even with the I would still mix for mid range rather than run a 25:1 engine on a 50:1 mix especially on a chainsaw used on hard Aussie eucalyptus varieties such as Ironbark.