Engine oil Mobil or Castrol

I'm fairly sure Mobil1 makes the Toyota branded oil, which is what I'm running in my 2023 Hatchback XSE. I'm using the Toyota 0W8. I also plan on keeping my car for as long as the wheels turn.

Exactly. Change the oil pressure switch. I would spend $50 and get an oil pressure test set with gauge and check pressure to be sure. Oil must be synthetic that meets proper spec. 5w-40 mobil1 European does.

I've been using 15w40 diesel motor oil in the AMC/Jeep flat tappet engines for nearly 20 years. Castrol makes a line called GTX Classic that's formulated for flat tappet engines as well

I've been using Mobil 1 10w30 regular and now High-Mileage Synthetic for decades and most of the Jeeps life.

There’s been a lot of advancements in oils since the YJ was new. I use Mobil 1 0w40 in mine due to its excellent temperature range and proven endurance.

I use Castrol Magnatec A3/B4 10W-40 part synthetic. 3 years now and no problems.

Mobile 1 full synthetic 0W-20 every 5K. My engine hums like a top.

Oil changes are cheap enough now that Mobil1 ESP 0w-30/5w-30 which is Approved by VW as 507 spec is around $28 per jug at Walmart. I'd change it more frequently and not chance it on the 2015 TDI engines in USA.

I put Mobile1 0w-40 in mine, even though it's not vw certified

I tried Mobil 1 in a Vortec 5.7. That engine did not use oil using Castrol or even Walmart dino oil. IT did use a quart at 1000 miles using 15-40 maybe it was 15-50 Mobil 1.