best oil to use in 7.3 diesel is rotella brand oil
Just use a good quality oil that is designed for diesel engines.
Yes
15w40
5w30 or 5w40 synthetic diesel engine oil
i use 7 quarts
5w-30 or 5w-40 is what is recommended by VW for use in your Beetle. If it's the 1.9L Diesel, use 5w-40 Diesel oil. Regular oil doesn't have the added detergents etc that this diesel brand does.
15w40
Use recommended oil - Shell helix ultra diesel sae 5w40 or Shell helix ultra extra 5w30 if you have dpf installed. Otherwise you can use castrol edge turbo diesel 5w40, or Q8 excel diesel 5w40.
The Oil you want to use is 15W-40, if your truck is higher mileage I use Amsoil's Heavy truck/ Marine 15W40
My 1988 DD 8.2 230HP w/turbo takes 12 quarts oil, & 2 Oil Filters. I use Delo 15-40w.
use only castrol syntec 5w40!! if you choose another oil make sure its full synthetic and the 5w40 weight, pretty much castrol is the only one who makes this, as mobil's is for turbo diesel trucks
Rotella 15w30 diesel engine oil