Blackstone Labs 10K Analysis Pennzoil Ultra Platinum

Yeah Pennzoil Ultra Platinum is among the best of the best synthetic motor oils to use.

 

Thanks for posting and sharing. I always wondered if I was loosing any engine longevity by changing at 10k? The oil never looks all that bad!

 

On the dipstick, or a collected jar?

That said, with most conventional cars, even the oil on the dipstick looks terrible by 10K.

Here's a comparison I did, with around 4k kms on the oil, vs new, with our 2010. Both oils are Toyota 0W20:

 

4th gen have better piston rings and track record, that's for sure.

 

I’m wondering if because of the hybrid system and the engine turning off so often, that the oil is essentially getting half the life of ICE only vehicles.

On a side note…
Think there is any harm in using 0w-16 in Gen 4? Found a bunch of qts of Castrol for $2/qt

 

The cheapest new clean 0w20 synthetic oil that meets specifications is better than the most expensive oil at 5 k miles.

At 5 k miles, gasoline blowby products, and carbon and dirt detritus will continue to circulate throughout the engine for another 5 k miles.

Nothing beats clean oil and a new filter. Oil and filters over the life of a car are cheap compared to a new engine. I'd use any money paid to Blackstone Labs to pay for a more frequent oil change.

 

FWIW the 2022 OM and Maintenance Schedule specifically states to us 0w16 with 12m/10000 mile intervals and if 0w20 is used then it is to be replaced with 0w16 at 6m/5000 miles.

 

Yeah seems like mostly a text editing exercise, a policy change. I doubt the engine is revised in any significant way.

 

This is a screen-grab from the Toyota Australia 2022 Prius Owner's Manual pdf, just downloaded:



Source:
Service Information & Repair Manuals

 

Lol. Then it looks to me like you can pretty much use whatever you want between 0w-30

 

Yeah, the one weight they DON’T mention is 0W16.

 

I can remember when we got our 2008 F 250 and the recommendation was for 5w20. I thought they had lost their minds. Did a lot a research and found that the tighter clearances somehow tolerated the lighter oils.
watching the Car Care Nut on YouTube and his VERY strong recommendation for avoiding oil burning problems in a Gen4 Prius was sticking with the 0w16 and being very careful not to overfill. FWIW

It is very strange that the OM for our Prius sold in the USA doesn’t give any options other than 0w16 for 10,000 mile oil changes, even for “severe use”.