Quaker State 5W30 High Mileage deal at Walmart

That's a good looking oil except the viscosity is a bit high (12 cSt) for a standard 5W-30.
Closer to the Viscosity of the old 0w-30's.
The 12 CST is it's best feature - probably has a HTHS near 3.5. Kind of like buying a 5W-30 Euro ACEA approved oil that also conditions your oil seals to help prevent them from leaking.
 
I would say Valvoline Maxlife has more moly and boron. However Im not sure if that will make a difference over the Quaker State HM. Valvoline Maxlife isnt Dexos whereas Quaker State HM is Dexos.

The Quaker.State formula seems more robust versus the store brand "SuperTech".

If buying.the 12 quart box for $58 the Valvoline is about $4.83 per quart. The Quaker State HM is about $3.8 per quart.

The Valvoline Maxlife is the better formula but the best value is the Quaker State HM.
Yeah, but how much more is the Max Life Full Synthetic over QSHM Full Synthetic? Adds up quickly depending on how many jugs you get for a period of time.
 
I'm aware that I'm posting in a slightly old thread, but it's a great thread and I'd like to add some relevant new info.

Quaker State High Mileage Full Synthetic was changed by QS in 2025.

In 2023 (when this thread began) 5w30 datasheet claimed cSt viscosity (KV100) was 11.7. VOA tested 12. See datasheet posted earlier in this thread.

In 2025, datasheet claims 10.8. I theorize it might test 11.1 now. Hopefully someone will have a new VOA done at the same lab, which I think was Oil Analyzers.

If it really is now 11.1 in VOA testing, that's still higher/better/thicker than most brands of HM FS 5w30 that I know of. AFAIK only Amsoil HM (and maybe Castrol Edge) are thicker.

I said maybe Edge because it might also have been changed recently to be less thick than in the past.

IMO higher viscosity is a key part of a HM oil's robustness that's often overlooked or underrated. Good additives are important, but there's no replacement for viscosity, IMO.

So with that in mind, QS HM FS is still a very impressive HM oil, and still one of the best and thickest available, even though it's not as thick as it was.

I think it's likely Amsoil HM is the best HM, but at what cost? 5 quarts of Amsoil HM retail price $60, or preferred member price $45. Not sure if that includes shipping.

Castrol Edge HM five quart jug $24 at Walmart.

QS HM FS 5w30 five quart jug costs $23 regular price, currently $20 on sale, at Walmart. It's usually on sale.
 
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