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Message: <blockquote data-quote="Schwepps" data-source="post: 345737" data-attributes="member: 3592">A few bits to help your understanding:The Castrol SLX 0W-30 you're talking about is not necessarily made in Malaysia. It may be blended elsewhere, imported in bulk and packaged here, or even packaged elsewhere. The source of the base oil could be anywhere in the world. We don't have a base oils industry here, but the Petronas Melaka SP2 refinery was only recently commissioned, and I believe has a hydrocracker producing G-III base oil. The global nature of the Oil & Gas industry is not straightforward.If you want to move out of Helix Ultra AB and Syntium 3000, do check the product code and research it. Havoline is a Chevron brand, ie. a US product. The international fully synth Havolines are probably G-IV oils, but the US fully synth Havoline is a G-III. If the product spec says something like 'Hydrotreated Paraffinic Distillate', it's a G-III mineral oil. That's chemical gobbledegook for 'mineral oil refined by hydrocracking'. If the spec says 'Polyalphaolefin' or 'PAO', it's a G-IV fully synthesized oil.Use Helix and Syntium as the pricing benchmarks. If you think you've found an imported fully synth which is 60-80% the price of Helix/Syntium, don't assume you've found a good bargain. You've probably found an expensive imported G-III semi synth, whose real price is 30-40% of Helix/Syntium. :wink:</blockquote>