The "deal" is it is on sale at Wally World for $11 bucks and change for the 5 quart bottle. I can't answer your question for sure, but i am going to use my current purchase of 10w-30 Havoline for a couple months and prolly about 4k miles or so before i change over to a Mobil 1 5w-30 for my long winter run. I hate to change oil in the winter!
Any way, i was hoping to find some Chevron Supreme conventional for this next run, but no dice at Wally World and i see that Chevron makes the Havoline so I went with it.
Hope others can shed some light on the subject.... I have seen some good info on the Chevron Supreme conventional.