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They mention a website for “Top Tier” detergent gasoline’s. (www.toptiergas.com)
Dale.
Thank you for continuing to share your diligence @Dale124
I'm caught not reading the instructions prior to use yet again ...
and now another tool for the tool box ... hibernation activity may grow

Too funny.... We can almost set our watches each year on the gasoline debates....For what it's worth to anyone, there are only two octane ratings which are subject to production standards, and those are 87 and 91 octane. 89 octane is a blend of 87 and 91 octane, basically "enriched" 87 octane, but because it is blended and isn't produced as 89 octane, the blend may or may not be exact. The same goes for 94 octane. 94 octane is an "enriched" 91 octane fuel, generated by oxygenation of the fuel and addition of a large quantity of ethanol, plus random additives, like frerosene or methylcyclopentadienyl manganese tricarbonyl (huge word for an octane booster) , etc... So again, blended 94 gasoline may vary considerably in composition and this may just be the reason why you feel a difference when using 94 octane from 91, as there is probably less gasoline in 94 octane and a greater variation in the ethanol and MMT boosters. Government inspections happen randomly or following customer complaints so don't count on them to police mixtures. So the long and short is, if you don't trust post production blending and/or want to avoid ethanol in your tank, 94 octane is not a choice, but there are many gas station choices for 91 gasoline that aren't ethanol blended. Petro Canada, by the way is not one of them.