Treven,

Hmmm, 27 dollars a gallon? I WISH. As I stated, five years ago it was 60 dollars, freight extra. Dave was embarrassed about it, (not his fault) so he gave me a sample to play with. Forever grateful to him, that sent me on my way to diesel heaven.

Sorry, no, that was 5 below Celsius. Just barely tolerable with the wind and snow and bloody cold on the hands when adjusting. Despite the cold, the fuel mix didn't seem all that "heavy". I suspect though, that warmer temps might not make much difference. Indoors, the mix is clearly much thicker than normal. I have a possible mechanical fix but that means major engine rework. That WILL happen but has been deferred to winter workshop time.

Graham,

Don't know about Gumout but I've given up trying to get any kind of useful information out of additive manufacturers. Again, I don't blame them but a shame. WD40 up next for sure. We''re not likely to alter anyone's fuel mixing strategies if they're engaged in serious contest work. We're just having fun dabblin" and discoverin" as GWB might say.

If you have a .15, I'd be most interested in how it performs in comparison to the Norvel. Reviewing some of the earlier runs on the Norvel .15, I note that even when using a stock, high ether mix, my power is down some 1000 RPM. Don't know what to make of that except that I'm now using a different carb with a smaller bore barrel. I'm going to stick with this setup to try and keep the later results more consistent. Try a 10 X 4 Grish on yours, let me know. They're not common, I can send you one if you like.

Greg,

Re Renewable Lube. Missed that, sorry. And what of a veggie cetane booster. How would THAT work? I emailed them and am waiting for that elusive response.

Stewart,

I'm going to try the veggie oil process soon, hopefully. But with a twist. Remember coconut oil? Highly saturated. Lots of oxygen too. See the link.

http://web.searca.org/elibrary/adss%..._biodiesel.pdf

They talk about using it as a 1% additive. Maybe a biodiesel additive that is superior to Amsoil cetane booster? Even at say 5% it'd still be affordable, I'm speculating. And how about a coconut oil lube?

I've emailed the authors and hope we get a reply. These folks have no direct commercial interest, it seems so we might get lucky.