Join Date: Jul 2019
Location: Pittsburgh, PA, USA
Personally I avoid most places that would classify as selling 'unbranded' like a WaWa, Sheetz, Speedway, etc.. The price and convenience is the best part of them, but the quality of the product is not up to snuff in my opinion. The detergents used are a very generic blend of government required cleaners, but you never know what the carrier hauled in those tankers before coming there. If they didn't remember which compartment had diesel fuel inside, you can potentially ruin 8,000+ gallons of gasoline and a whole lot of cars.
In my short time with my AWD Trax, i found it runs best on the 89-91 octane range. I've burned full tanks from 87 octane to 93 octane, and there's a noticable difference between the way the engine handles them. 87 (24/34) gave pretty much normal performance and gas milage, 89-91 (26/35) makes it feel a little more responsive and actually boosted my milage nearly 2 mpg over the course of a tank, but 93 octane gave me intriguing results.
Basically the 93 (23/33) performed great, and the biggest difference in the responsiveness was the boost coming from the turbo. You can really feel the increase in power as pressure builds, but consequently I actually lost 1 mpg from the 87 octane numbers. I almost wonder if it burns off too clean at that octane rating and feels like it has to add a bit more fuel than normal to keep the ratios right.
Who knows, either way you'll find my tank filling up right in the middle of the selections. I've run practically all my cars on mid-grade for over 20 years now, seems like that's the right course to stay with this one also.