Pennzoil Platinum v Quaker State Adv Eng Syn

[GreenMachine]

Both are buy one get one at Advanced Auto Parts Was thinking of getting a couple cases or a case for my 98 Deville. Figure this stuff is well enough to follow the OLM with the AA filters.

Which one is better are they basically just a coin flip?
http://www.advanceautoparts.com/english/specials/specials.asp

 

[AndyH]

It has been posted in the past by a former Pennzoil employee that between Pennzoil Platinum (PP) and Quaker State synthetic the PP uses a superior Group III base-stock compared with the Quaker State. Given then choice between the two at a similar price point, I'd take the PP every time.

{Edit} Found the post from Johnny:

Quote:

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Other than the additive difference, the base stocks are different. The PP is made from the Shell XHVI Group III base while the QS is made from a Group III that is more than likely purchased from Chevron. The Q-Torque product uses the same QS base but has a different additive package than other QS synthetics.

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From this message thread:
Pennzoil Platinum vs Quaker State Q Advanced oils.

 

[GreenMachine]

Thank you, will have to see exactly how its priced at the store and go from there.

 

[GreenMachine]

I've seen PP runs a bit thin in the 5w-30 relm. Synthetics being better in cold weather I suppose I could just run the recommended 10w-30 in my caddy all year round and not bother with switching to 5w-30 in the winter if I went the synthetic route. For shear concerns pre-2000 northstar users have been advised to run 10w-30 when they can. Flat tappets.

 

[Fordiesel69]

Quote:

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I've seen PP runs a bit thin in the 5w-30 relm. Synthetics being better in cold weather I suppose I could just run the recommended 10w-30 in my caddy all year round and not bother with switching to 5w-30 in the winter if I went the synthetic route. For shear concerns pre-2000 northstar users have been advised to run 10w-30 when they can. Flat tappets.

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Correct me if im wrong, but 10.3 cSt @100 C for PP 5w-30 is considered thin? How can that be when the old Havoline dino was 10.8 and the new deposit sheild dino is 9.7? Should it be more towards 11?

 

[GreenMachine]

That's what I'm asking, how much difference will I see? I got zero noticeable leakage with the Castrol GTX HM 10w-30 (their site says "9.3-12.5") I'm getting a bit of seepage from Kendall 5w-30 GT1 Synthetic Blend (10.9)that has slowed down since adding a quart (maybe 2) of Kendall 5w-30 GT1 HM Synthetic Blend w/Sealmax(11.6). PP is 5w-30 10.3 and 10w-30 10.45.

Other question is that "adaptive molecule" thing just a gimmick or could it help prevent leaks too? I like the idea that it resists shearing because thats one of the concerns with flat tappet engines.

Guess I'll give it a try next oil change and see what happens

 

[Triple_Se7en]

Some engines would rather have the lesser quality oil. Just because one oil is higher quality than the other - doesn't mean it will surrender lower wear numbers or a quieter engine. There's no way to find out the correct answer here until you get a UOA done with each brand. In the meantime, pick a brand and GO!