- Nov 26, 2002
- Texas & BWI Area
It would make sense price-wise. Rotella T Syn : 12.88$ Mobil Delvac 1300 : 5.88$ Chevron Delo 400 : 6.42$
quote:G3 is G3 no matter how you slice it. It's still hydrocracked dino basestocks. G4 is the only way to go. 100% synthetic basestocks. G4 starts synthetic and stays synthetic.
Originally posted by SSDude: Yes. However, it is a higher grade than most Group IIIs. G-ManIII has posted extensively about this. You can do a search and find out more.
quote:Wrong on both counts. If we're talking about Shell's XHVI base oil, which is a Group III, there is nothing hydrcracked about it. The feedstock for XHVI is either waxy raffinate or slack wax, which are byproducts of crude oil refining, and these are isomerized into a base oil that has a higher VI than virtually any hydrocracked Group III. As for Group IV (PAO) starting out synthetic, the "building blocks" of PAO is nothing but ethylene gas, a purely natural substance that is a byproduct of CRUDE OIL refining. So, in short the FEEDSTOCKS for both Group III and Group IV are the products of CRUDE OIL production.
Originally posted by TexasTDI: G3 is G3 no matter how you slice it. It's still hydrocracked dino basestocks. G4 is the only way to go. 100% synthetic basestocks. G4 starts synthetic and stays synthetic.
quote:They aren't. Also, here's some food for thought: We all want to dismiss Group III as being not a true synthetic. However, in the early days of gasoline production, when demand began to rise with the advent of cars powered by internal combustion, the oil companies had to develop a new way to produce gasoline since the amount produced naturally through distillation wasn't enough. What they came up with was "cracking" the larger crude molecules to produce gasoline. This "cracked" gas was commonly referred to at the time as "synthetic gasoline" and was universally lauded for its superior properties, including a much higher octane than "natural gasoline." Hydrocracking involves the restructuring of the feedstock molecules to the point that they don't resemble their original state at all. It would seem, then, that the final product of hydrocraking can lay claim to being "synthetic"—at least in some sense of the word.
Originally posted by sbc350gearhead: I thought esters weren't produced from crude oil.