Engine oil Castrol or PENNZOIL

I use Pennzoil Platinum. It's made from natural gas, a cleaner base than crude. My engine loves it. Minimal consumption between oil changes and no leaks.

I went with Pennzoil Ultra Platinum 5w-30. 20k on the clock of my 2023 and it doesn’t burn a drop of oil. I changed the oil at 1k and 3k after that and it always comes out looking beautifully.

Pennsoil 0w30 is a great oil

I'm seeing a lot of strife around these comment parts on this post; but I will tell you this: If previous owner used only conventional, you best use conventional for the sake of the rubber seals on the block. If you want to eventually run synthetic after your first rebuild, be my guest, although I would recommend going the sohn adapter at that point, just for extra insurance that what you're doing is good for the engine.

I don't know where you're located, but I've personally ran Castrol GTX oil in all my cars up until now; the only thing is, it's harder and harder to find conventional oil that is of thinner grades. Which isn't a bad thing, because the RX8 needs thicker oil than what's on the oil cap anyway! 5w-30 should be your minimum thickness, but really, it's recommended you go thicker, to like 10w-40 for year-round, and 20w-50 for track days or extremely hot climates. There's this shell oil for diesel that's rated at 15w-40 that I was going to potentially pick up and start using. Yeah your fuel economy is gonna drop a tad, but you're really doing it for the sake of your bearings.

P.S. get an oil catch can that vents to atmosphere if legal in your area. It will save you heaps of headaches down the road ????

Castrol magnetic 5w30 best utk jimat petrol

I switched to Castrol Edge 5w40, and what a difference! It loves it. We didn’t lose any fuel mileage, just as Pepe. but much much smoother.

Car idles smoother with Castrol it seems.

Penzoil is the only "clean" oil. It's made from natural gas rather than crude oil. So that in itself is beneficial when talking about deposits left in your engine vs other oil brands.

Castrol euro 540. Tried liquid moly and a few others but my car burns them for some reason.

Pennzoil UP was on a sale and I bought 15 quarts, my Sierra dropped a lifter within 200 miles of the OC and switch, related, no way, will I ever use Pennzoil UP again, no way.