Kodėl Shell alyva?

Shell launched Pureplus technology products under Pennzoil Platinum brand. Look at http://pureplus.pennzoil.com, which brings up advantages of natural gas baseoils against other motor oil. Pennzoil Ultra Platinum is up to 25% cleaner than Mobil 1, is up to 35% cleaner than Valvoline® SynPower® and up to 40% cleaner than Castrol Edge® with Syntec®. Shell Helix Ultra is analog product of Pennzoil Platinum in European market

penzoil_pureplus
Look also at Shell Helix Youtube channel
http://www.youtube.com/user/ShellHelixMotorOil