Shell premium in Canada is 91 no ethanol, however the octane is not high enough for my little rig, without something else my engine will detonate. I was running Lucas octane boost and that would work...just, the 4 litres of race gas worked much better however up here they want $5.00 a litre (just shy of $20.00 a gallon) for race gas. While I do understand the concept of "you want to play you have to pay" there are other options. I only need to get the octane up a couple of points to eliminate concerns, however the options are vast, the opinions are numerous and the availability is limited. Mountainhorse you have done a major amount of research and are a valuable resource for anyone looking for information on this topic, your knowledge has actually forced me to stop being lazy and do a better job of doing my own research. As our season is pretty much over, I'll have to wait until next year to start the testing process.
