Engine oil Mobil or PENNZOIL

Not going to lie. I use Walmart auto for my oil changes. If you synthetic premium you can pick your own oil, I use Mobil one.

Mobil 1 full synthetic and Mobil 1 filter. I did cams recently on my GT and at 150k, the top end looks almost new.

I am tuned in WI and running Pennzoil Ultra Platinum 5w-30

I’ve been using Mobil1 0w-30 in it for over 20 years. My Blackstone Labs reports still come back clean with no water, fuel or antifreeze found in the oil.

What brand oil are you using? I noticed a decrease in consumption with Mobil 1 and stuck with it.

Fuck Mobil 1. Get you some penzoil ultra platinum or better yet some amsoil. They’re both miles better than Mobil 1. I used to use Mobil before switching to penzoil. The difference was noticeable

I use Full Synthetic ( Pennzoil Platinum). At 24K I really can't even tell the engine is running when I come to a stop, its just that smooth and quiet.

Mobil one..yes they make ac delco oil, but the additive package is a little better with m1 vs Delco.

I was using Mobil 1 fully synth 5w40 on my old cab with no problem at all. good pressure at idle and at 2k. I used this oil in my new cab (same engine) and boom! No oil pressure at for the first 15 secs. Then it immediately jumped to 5 bars and finally settled down to 1 bat maybe less. However, I saw a dramatic increase in oil pressure even with the 5W40 mobil 1 when I switched to a 2L oil pump. Idle pressure was arround 2bars. Although I used it last summer and it worked just fine throught my vacations in Greece.

I ran M-1 15w50 for 10k miles or so, and my car ran 10 degrees hotter on average than with any other oil I've used. Throttle response also felt sluggish.