[Fedexjetmx]

Hello again I’ll apologize now for such a long post but I feel very strongly about this subject.There is that special word “100% synthetic” Yes the 100% synthetic you buy for your car is made with a petroleum base in it. I’m not sure how much maybe as little as 15 to 20% but, it is in there. Amsoil’s phrase “manufactured from select synthetic base stocks”, the word synthetic is a industry “term” no a “ fact” , and “base stocks” is actually petroleum base oil. And if you go to Mobil’s web site they even tell you so. The synthetic part comes from the fact it is so highly purified and has so many and much additives to it. ( I’ll try not to get to long winded about this subject, I myself use “synthetic”, Mobil 1 and used Castrol for many years until I found Out Castrol is only a class 4 and Mobil 1 is a class 5 but so is Amsoil and Royal Purple but Mobil’s cheaper and can get it virtually anywhere).Because true synthetic oil isn’t new, it’s been around since at least the 50s. Turbine engines used on aircraft require true synthetic oil. And still true synthetic is only about 5 to 15 weight and the long molecules required to increase its weight to 30,40 or 50 wt would be sheared or broken down as it was pumped through the extremely close tolerances of the bearing surfaces of the rod, main and cam bearings at 30-60 psi and end up with only about 5-15 wt oil after about 15 to 30 min of running the engine. Aircraft engines use roller bearings so their oiling requirements are more towards cooling than suspension. Again I am an aircraft mechanic. There are just a few manufactories of true synthetic oil, in the US there are I think three Mobil, Exxon and BP. That is why Mobil sued Casrol. Mobil claimed Castrol was basically misleading people when they sell their “100% Fully Synthetic” oil , because Mobil does make a true synthetic for turbine engines, so they know what its molecular basics are. But by the same token, Mobil’s automotive “100% synthetic” oil wasn’t the same as their Aircraft oil, but they felt it was closer to real synthetic than Castrol….I guess. This lawsuit was back before all the other brands started coming out with their version of synthetic oil. Because up until this point Amsoil, Mobil and Castrol were I believe the only people to provide the public with synthetic oil for your car. Once the dust had settled in then court case, the court basically said that the phrase “100% full synthetic” was a automotive oil industry “TERM” not a “ FACT”. I think because They (Mobil) Casrtol and Amsoil all used the same basic term 100% full synthetic, and buy looking at the actual chemical make-up of their oils and since Mobil does make true synthetic oil for the aviation industry and it wasn’t the same as their automotive oil it must be a term phrase not a fact phrase.( I personally think Mobil screwed themselves I think they felt threatened by Casrol gaining to much market share and Amsoil was still a little obscure company they weren’t worried about).So with the conclusion of that court ruling all the other oil companies said if they can do it so can we, and the flood gates of mass synthetic oil for your car marketing began. Here is an interesting web site that is doing their own little comparison of the major automotive synthetic oils. http://neptune.spacebears.com/cars/s.../oil-life.html