Thanks Jon_slider. All I meant by saying it's not VW approved, is that it's not listed as a VW 505.01 approved oil. I have read that tons of people use Rotella and Delvac 5w-40 synthetic with great UOA results, but these two oils are extremely hard to come by in Mexico, which is why I went with Delo.why not? All 5W-40 is full synthetic. I use Rotella T6 from Wall Mart
I wish I could buy Rotella or Delvac 5w-40 in mexico, I've traveled several times to the US and seen all three oils at Walmart, I just envy the price you guys pay for good oil I guess next time I visit the US I'll buy 3 or 4 jugs of Chevron Delo which should be enough for two oil changes within a 12 month period ~ 15k to 20k miles.
Thanks for your comments.