Engine oil Shell or OEM Volkswagen

Shell helix has been fine for me

As long as you’re not mixing fuel with it you’ll be fine. All of my stuff runs on basic and cheap T4 Rotella 15w-40. Have never had a single issue

Rotella T6 full synthetic, zero problems, never let me down.

Rotella t6 never let me down cannot get it so Schaeffer's it is. As long as you change it you're good. Schaeffer's has a 5w40 which I like because I see thirty below in the winters

Rotella T6 15w40 is like franks hot sauce, I run that shit in literally everything. Civic, VW tdi, cummins, generator, even my KTM 450 dirtbike. I’ve owned the bike since new and for a very high performance engine at 120 hard hours it looked nearly brand new, I’ve never seen an oil perform like that.

Rotella T6 5w-40 and it’s finally easier to find now!

Shell Rotella T6 15w40, has worked fine in my F800GS for 40k miles.

I would recommended shell ultra 15w50 . KV100 is 20 which is thick as fuck and won't shear down quickly. Mogul 7100 is thin and will shear down to 40 grade and internationally considered garbage oil. Shell is made of group 3+ base oil so its going to perform better.

Rotella 5w40 only. I daily and track mine

Well, just got back the test results on for our oil analysis, here are the comments: " Nothing showed up in this sample that's too much of a surprise, though aluminum and copper are perhaps a little higher than expected. New parts wearing in tend to leave a lot of metal in the oil and that's what we suspect is going on here. You ran this oil pretty long for factory oil (we realize you were probably only following the oil life monitor). So that's why aluminum and copper are on the high side. No matter--everything should improve now that you've changed this fill. The TBN read 1.9, getting low but still okay. Potassium is from the EGR system. "