Engine oil Mobil or PENNZOIL

I've run Pennzoil Ultra in 5W-30 for the past 4 years and never had a problem.

mobil 1 high mileage synthetic has been good to me.

I would love it if the whole world moved away from fossil fuels and completely to renewable energy resources. Myself included. However, for many practical reasons I currently own a vehicle with an internal combustion engine, and when it needs an oil change I change the oil myself. So what oil do I buy? I buy Mobil1.

We exclusively use Mobil 1 (varying grades and viscosities) per the MFR spec and changing it at the MFR spec mileage (or time, during covid). Never any issues noted. 1985 BMW K100RS (122k miles), 2003 Boxster (177k miles), 2012 Acadia (98k miles), 2013 Jetta SEL (105k miles).

In a pinch, I used Mobil 1.

Some 5w-40 can be quite thick in cold. The 0w-30 here is German Syntec, and trust me it's the same visc curve as 0w-40. As you see, 5w-40 is 3-4x thicker in cold than jug 5w-30

I use Pennzoil Ultra Platinum 0W-20, and follow a 5K miles/6 months time change schedule. (It’s twice as often as is recommended but that’s just my personal preference on how often I change it, not indicative of oil quality or use parameters.)

Pennzoil Platinum Euro 5W-30

Mobil 1 0w-40

Pennzoil ultra platinum. It is what they put in it from factory and it is one of the best oils around next to amsoil for a lot less money.