Originally Posted by
Roelof
The Putoline 959 is a 2-stroke oil.
Probably they do that as in the same way I had my 1st thoughts. Any methanol friendly (mixable) oil will give less mess inside the engine and giving a good start and lubrication.
Standard motor oils which do not mix with methanol can a give strange gray blub inside but when most oil has dripped out I have not seen an issue. And if you clean it all out with brake cleaner and re-oil it all with afterrun oil for sure nothing can go wrong.
Be aware that most castor oils have a high viscocity and do not provide the right lubrication for this way of breaking in an engine.
I was also thinking of Marvel mystery oil. It even has a lower viscocity and is a well known used afterrrun oil but never tryed it.
you ever tried this, after a race I burn the fuel out, when I get home I take it apart and I rub everything inside using a qtip and high temp silicone greese, so also adds to the protection next time I run, I never have a problem and I feel the greese bonds to the metels ..