Ahh! I misread the MSDS for the Canadian Tire Cetane stuff. - .1 to 1% is the 1,2,4-trimethylbenzene.

However Stoddard solvent is listed as being 60 to 100% of this product.

Guess what Stoddard Solvent is? Trick question, I could also ask - guess what is also primarily Stoddard Solvent? Andy, think back to your putting a throttle on a very small diesel for someone and while holding in your hand, flipped the prop and it ran for a short while.

Answer WD40! Autoignition temperature of Stoddar Solvent is typically listed as around 210 Deg C

WD40 60 - 70 % Stoddard Solvent and 10 - 30 % Pertroleum base.

I wonder if WD40 would work as well as the Candian tire Cetane Boost product, that is of course there is some secret chemical in it that is not listed on the MSDS that is doing the actual Cetane boost / ignition improvement.

Of course through out our discussions of model diesel engine fuels with respect to Cetane Boosts and ignition improvers we are only thinking of the equation from our point of view. The point of view for someone in industry whose primary focus is auto and truck diesels may be very differnet with quite different requirements.

This has me chomping on the bit, need to find some time and nice weathe to try some of these ideas.

cheers, Graham in rainy, wet, cold Eastern Ontario.