Reviews of Shell engine oil

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

On an old e36, 5w30 full synthetic no matter the brand would often cause some leaks. Switched to some thicker Rotella oil made for diesels and suddenly no more leaks.

Everyone has their preferences, at the end of the day it doesn't really matter, just change it regularly. I've used Mobil1, Pennzoil, LiquiMoly, Royal Purple, Rotella and probably a couple others I'm forgetting. No noticeable difference between any of them.

Worry less about the now old 502.00 spec than the actual oil itself. It's API SN/CF and has MB-Approval 226.5/ 229.31/ 229.51. Even though 505.00 and 505.01 are diesel engine specs, it should be fine in your older car. One of my go-to oils is Shell Rotella T6, which is specifically for diesels, but it's a great oil.

Its honestly all good, I ran Rotella T4 for a while, still good.