QUOTE(RahXeph0n @ Aug 17 2011, 02:12 PM)
If it's too good to be true, it's too good to be true. I would really caution against buying oils from hypermarkets after the articles I've read about fakes. The purchaser in charge of motor oils at Tesco probably doesn't even care if it's real or fake, they just care about the bottomline-cost. As long as a supplier is there supplying at a good price, they will buy and stock up. I doubt they have any process of validating the originality of the content/product that they are buying since their turnover is so high. Of course, it could really bee a good deal by Tesco. I just wouldn't bet on it.
Mr Phon Phon... (heh heh)...
I have used these EU packed oils (Shell Helix Semi - 5L bottles) and Castrol Magnatec since many many moons ago, and have no issues with my engines whatsoever.... have used them on local and EU cars...
I know that these hypermarket does require authentication and certification from the suppliers, as well as product liability insurance (and of course listing fees, annual performance fees, etc), and massive quantity bulk buy.... also the suppliers are rated by "complaints" by customers, and they are kicked out if their quality are not assured...
Still, while these oil suppliers can supply fake oil, and can falsify the certs, but I doubt they will also want to lose their listing fee, their shelf fee, nor lose a big client such as these hypermarts...
Again, to each his own, I am only sharing my experience with the semi syn oil, which works well for me thus far...