I have an old Southern Cross KXD-2 4-stroke mower. My dad used whatever fuel and oil that was available, although he never touched the ethanol-blended stuff. I'm pretty sure he used whatever was regarded as "standard" fuel through the ages, and converted to S.A.E. 30 in more modern times.
However as that old ad use to go: "Oils ain't oils!"
My 1960s manual recommends S.A.E. 40. However I am sure the S.A.E. 40 labelled oils today are not the same thing.
Can anybody recommend the best fuels and oils to use in a 1960s mower?
Also, are any of the "additives" being marketed by some companies any good, or are they just expensive "snake oil" treatments?
