Actual use under actual user conditions should qualify for proof, I should think. You might want to read THIS
Suffice to say I couldn't wait to drop that crap out of my engine. While it 'seemed' alright at 1st(slicker shifts, quieter engine than the Honda GN4 oil I had been using), after 2,000 miles my engine never ran so noisily, or hasanyoil beenso black, smelled 'funny',with no 'apparent viscosity', after such a short stint in my engine.
I don't know what the regular Rotella T is like, as I've never used it(I suspect along the lines of Delo 400), but I would certainly never use the Rotella Synthetic 5W40 in the blue jug again, even if I had no other oil at hand. If you are happy and satisfiedwith it, great, good for you
, but I certainly didn't have that kind of experience with it. It was so bad, that it put me off of trying the regular Rotella T Dino oil.
I generally ride quite a few miles per season(more than the average rider who doesn't ride to work[retired]) I use only
Chevron Delo 400 15w40, even though I nowhave to ride 3 1/2hours and cross an International Border,to buy it. Matter of fact, I'll be going on another run soon, to pick up another 4 jugs, for my 'Ole Girl'. Hard to find that kind of protection for just $10.80 per gallon jug.