I was at Walmart in Longview Washington on Sunday and they were out of Mobil One 0X20 oil. I than noticed Valvoline Synthetic 0 X 20 oil for 5.97 per quart and bought 4. I am going to use next oil change and see if it performs as good as Mobil One 0x20 oil that I have been using. Alfon
The synthetic oil manufacturer AMSOIL who first produced 100% synthetic Motor Oil from the Mineral Oil base, tried to prevent such petroleum based oils from being classified as true 100% synthetics. The courts ruled against them, but many of us agrred with Amsoil. Amsoil and Mobil - 1 are each made using a mineral oil base, and consequently cost more, and evidently perform better in wear tests. Many of us will not consider the petroleum based oils that continue to be sold as 100% synthetic, products like Valvoline "synthetic" oil.
FWIW, my local WalMart is charging $6.17/qt. for Valvoline 0W-20 and $6.37/qt. for Mobil-1 0W-20. So the cost difference is insignificant.
