Is Shell Helix Ultra the same as Quaker State Euro

[JEL]

and is it the same as Pennzoil Platinum Euro

I was told the Shell Helix made overseas is better something
like Castrol GC I hope this isn't

 

[glenncof]

Good question.

See:
http://theoildrop.server101.com/forums/s...part=1&vc=1

I have seen Shell employee confirm Rotella T as Shell's XHVI base stock (on Shell's Rotella forum).

I assume you are referring to base stock, not finished product. Helix is finished products. I would expect regional tweaks in formulation so 'similair or identical' is different granularity of question.