Is Mobile 1 High Mileage oil a bad match for the Prius?

Only Mobil 1 0W-40 is a true synthetic oil.

 

I’m using 0w-40 on our 2010 woth now 198 k miles on it.

Our Prius consumes about a quart every 5k miles or so, which is reduced due to the heavier oil.

Works well.

 

About a quart every 4500 miles when it was a bit younger at 130 k miles. Initially went with 5w-30 prior to 0w-40 and have been running that for 20 k miles now.

Currently Castrol Edge but next up is Pennzoil Pure Platinum. Some say that is the nectar of the oil gods.

But it runs nice and quiet.

 

I noticed that since I started using Mobil 1, young wome are more attracted to me, cashiers at grocery stores insist on providing unsolicited discounts and red lights turn instantly green when I approach intersections. But the best thing is that my poop smells like freshly baked pastries. Living proof!

 

That was at 0w-20 prior to swapping.

It maintained there for 5w-30 but I fed it high quality redline oil and figured the price for that wasn’t worth the oil consumption, so I clubbed up and went with equally good Pennzoil at a reduced price .

This may not help your situation, but it can’t hurt either .

 

Not at all. It’s acceptable per Toyota for non-cafe regions around the world. I have been using it for 20k miles and the car runs great and still gets great MPG’s. I have 105k miles now and no oil usage.

 

Yes the Euro formula. I buy a 5 quart jug at Walmart for $25.00.

 

That article was written in 2016 so something is not right. I see on the Mobil site 0W40 is FS now. But At Walmart they Carry European Formula, will need to research this more now.

 

So it appears I have been using Mobil 1 FS which is still a Europe Formula that’s approved by Mercedes, Audi, VW, Nissan. BMW is the only one who is no longer on the list. It appears that the FS version is slightly thinner then the old M1 0W-40 which probably is better for our Prius anyway.

 

That’s about right. I don’t measure it to the exact mile, but with 0w-40 it’s between a quart every 5-6k miles.

Good enough for a car that has nearly 200 k miles and going strong .

 

As far as my research has gone Mobil increased the TBN number in the 0W-40 “FS” bottles. BMW switched from Castrol to Shell as OEM oil provider, as well as decreased the service interval on later models. We have several Mercedes vehicles, have had two ‘08 3 Series and one ‘15 5 Series. I think it makes sense that they do not apply for “Approval” for the seemingly old specifications in a weight that is uncommon in current vehicles.