Pennzoil Ultra Platinum

[Draxindustries1]

Has anyone used this oil?
Made from natural gas and guaranteed 15yrs or 500k miles extra life from your engine...

[CraigyMc]

Draxindustries1 said:

Has anyone used this oil?
Made from natural gas and guaranteed 15yrs or 500k miles extra life from your engine...

Citation needed on how you would claim on that guarantee and in which country it would be valid.

[Puddenchucker]

Can't comment on the Penzoil specifically.

Shell, which owns Penzoil, also makes its Helix Ultra oils from natural gas using the same "PurePlus Technology".
I've used the Helix Ultra oils in my 350Z for years with no apparent issues - but other than if the engine sludges-up or getting a used oil analysis done I have no way of telling if its any better or worse than Castrol, Mobil or any other brand.