Engine oil Mobil or PENNZOIL

I run penzoil ultra platinum. I’ll spend the extra money to know that I might get a few more hours out of my gen.

I used to use German Castrol 0w30, then Belgian Castrol 0w40, now I use Mobil 1 Euro 0w40 in most applications. Intervals of 5000 miles Every engine I've had ran great under this regime.

Mobil 1 0w20 ESP. Advance Auto and some Walmarts have it.

I used to get my 0-40 Mobil at WalMart for my Audi, because they were the cheapest.

Mobil 1 Advanced 15w50 automotive oil. Yes you heard me right. No it doesn’t cause clutch to slip. $25 for 5 quarts at Walmart. Best protection against friction and wear money can buy. 11k and zero issues. No metal shavings on drain plug after break in with factory oil.

Luckily modern oils are developed with this in mind. Costco/walmart/amazon oil is made by the same company, Warren oil. I think most people consider penzoil ultra platinum as one of the best.

I use Pennzoil Ultra Platinum 5w-30. It’s hasn’t failed me yet and I’ve done multiple track days

Audi uses Mobil 1 at the dealer level. Stick with that.

Usually, motor oil goes bad because the additive packs that are in the oil get burned off or used up. I'd imagine that this new Mobil1 Annual Performance has more additive packs than what standard Mobil1 has but it's probably able to go that far because you're going to have to add additional oil that gets burned off because every car burns oil.

I'm not a fan of Mobil 1. I have noticed my car burns only on Mobil 1.