Is anyone here aware of the differences of a group three and group four base for synthetic oils? Also, does anyone know how oils preform before and after they are heated up? Does anybody let their oil warm up to a certain temperature before they drive? These are some of a few things to discus when talking about the advantages of synthetic versus conventional oil. There have been outside test that show the differences of oils after extended use inside engines. Most engine wear is done on startup when there is no oil pressure. Next is wear done before the oil is at operating temperature. Yes, synthetic oil can go for longer intervals. That is the point of least concern to me when deciding to use it though. The important ones seem to be left out here. I see no reason why everybody should run anything but synthetic. The main concern for most people is price. I read a non bias test report on mobil 1 that showed the price difference after 75,000 miles of use. The car that used mobil 1 had half the service intervals as the car that didn't. The car that used mobil 1 returned slightly better fuel economy. When all was said and done, the mobil 1 car came in less than $100 cheaper. As impressive as that isn't, it's still cheaper to use synthetic. But tests have always showed that cars that do use synthetic have less engine wear. So why not use synthetic if it's going to be about the same price with better results?
. Most of our information was sent to me and other representatives for educational purposes. After seeing many comparisons i stuck with synthetic.