RE: Need some guidance on fuel
1/2 of my fleet is still nitro fuel, I check with my LHS on orders and shipping to make sure there is always a gallon or 2 reserve for me, in store as backup.
Most 2 strokes .50 CID will run well on 15%
Some 4 strokes like 20% or better with 20% oil
Most YS like 30% nitro/ 20% oil
Bigger 2 strokes like OS 1.60 and Moki 1.8 -2.1 or Supertiger will be happy with 0 to 10% nitro, less oil
Gasoline engines are different, do not use these # at all please.