This^^^^^

The german castrol is sold in Autozone as a 0-30 and says made in germany on th back. Been proven to run well at 7,500 mile drain intervals and is made from entirely synthetic PAO stock. Very comparable to Amsoil but cheaper at $7ish but can be had on sail sometimes for less. I have not found it anywhere but autozone and only in 0-30 which will work well in most daily drivers/performance cars. I run it in my evo. If you have a race motor with loose bearing clearances it might be a bit too thin.

I used to run Rotella T as a cheap low mileage oil that still had alot of zddp and phos but it appears they have changed the formula a bit recently and it might not be as good.