Hmm the 747 is a 2 stroke oil that is fully synthetic designed primerily for Motor bikes I think the important thing from the quote below also useable!
Quote
"Castrol A747 is a specially formulated low ash, synthetic based hybrid.
For use in multi cylinder, water cooled, race prepared motorcycle engines.
FIM Road Racing World Championship ref 404752/01
Also useable in Karts, Model Cars. ( 40:1 in Rotax Max kart engines. 125 and 250 Gearbox Karts at 25:1)"
One of the problems with using these types of oils esspecily the kind used for racing motorbikes a few years ago it was ruled that bikes on race tracks in certain countries had to pass an emmission test, so thats why a lot are clean burning and low ash etc etc. this is used by a detergent being added to the mix which removes oily residue 1. makes it burn cleaner and 2 freeer in theroy.
However in our 2 strokes we kinda want that oily residue it prolongs the life of the engine which is why a specialist 2 stroke oil designed for the engines a good idea.
For example either of the King Cobra oils
1 venom castor based
2 complex competition Fully synthetic
3 Klotz semi synthetic
4 Klotz fully synthetic (due in soon)
Personal favourite Klotz Super Techniplate semi synthetic it is an excellent all rounder 20% Benol pure racing castor and fully synthetic blend very low smoke very clean burning and all the benefit of both worlds!
Just my 2 penneth!
Rog
Spec sheet on the Klotz below click the link
http://www.klotzlube.com/tech/KL-100.pdf