Originally Posted By: rfitz69
What brand would you go with if it were readily available in a Peavey Mart, Napa or a Partsource? Assuming it were slightly more expensive than the regular store brands...
Out of what I listed, it's a bit of a tossup. Eneos, of all things, is the cheapest of all three, and for whatever reason has a better regular price than the majors at Partsource or NAPA. So, if I needed a synthetic for my G37, and wasn't looking at extending drains the way Amsoil and RP can, I'd have to go Eneos.
As for the suggestion that you just might want a pretty bottle, well, if that's the case, get Eneos. It's cheaper per litre than other synthetics at regular price at Partsource or NAPA.
If I needed dexos1, I'd grab the Royal Purple. Amsoil is also similarly priced at Peavey Mart, so that would be a consideration. Note, as has already been pointed out, that RP does go on sale at Canadian Tire and Partsource on occasion, but just not by much. Personally, I like all three brands, and it's hard to pick favourites, unless I'm pressing the extended drain bit with Amsoil or even RP, or needing an actual dexos1 oil, which RP is.