Pennzoil is the Shell/Sophos group's flag-ship brand, and Ultra is Pennzoil's very best product - even better than their Platinum product, but they do not push Ultra as heavily in advertising (probably because they make a limited amount of it), so most people do not know... being Ultra & Platinum are priced the same. (either way both are better than most)
I say the value is good vs excellent because it costs extra to go pick-it-up being most Walmarts and Auto Parts stores do not have it, which makes it expensive to get even though the actual price on the shelf is "excellent." I am not certain this is going to stay their best product or not because they are starting to make Platinum with base-stock from Natrual Gas (i.e. their proprietary gas to liquid, which supposedly produces even better base-oil than hydro-cracking traditional, conventional crude). Obviously, it is hard to say being not much data is available on their newest products at this time, but regardless this is better than the regular Pennzoil Platinum Full Synthetic without a doubt... and arguably one of the best, most highly-refined oils to ever have any components sourced from crude.
It keeps all the valves nice and quiet in my Infiniti G37 - it does as well as Nissan's Synthetic Ester Oil, which is $13/qt, not to mention it comes back with far better Used Oil Analysis reports - each showing less wear, and more cleaning additive left... The only thing it does not have a lot of is molybdenum, but I don't think Pennzoil has a choice being this meets the latest emissions standards API SN... No way they could throw in a bunch of Moly and maintain that standard. They would be forced to back-rev to API SM like the Nissan Synthetic Ester... Regardless, Pennzoil Ultra still somehow shows less wear metals, and it goes without saying that very few naturally-aspirated (i.e. non-turbo) engines are harder on oil than the Nissan/Infiniti VQ series with VVEL... There are just so many hot, moving parts; high compression; a LOT of horsepower/liter; and the crankcase holds just barely over 5 quarts.
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