Aside from the 0-30 post below... Why is there different specs for the other Syntec grades?? Those of you with a faxed copy of Castrol N.A.'s specs dated 6/02 will know what I mean...compared to the specs listed on this website: http://kozmik.guelph.on.ca/gtdproject/fluids/syntec.jpg Is this one "the Canadian specs"?? Or is it simply older?? Which one is correct? Why would there be a difference between the 2 countries? When I grab a bottle of 5-50 off the shelf up here in Toronto, the UPC number matches this second PDS? So which PDS is the one for the oil I have in my hand?