I just found this site tonight. Great Site! I did a search and didn't find much on Valvoline dino oils. Here is my question: I have been using Valvoline oils in the Toyota trucks I have owned for about 6 years. I have always done well with them. Are they inferior and if so, enough to change to something else? I see there are a lot of Mobil fans on here and I have heard good things about Mobil other places. Is it worth it to switch? I talked to the mechanics at the dealership and they recommended Valvoline. Can anyone enlighten me at all? I don't know much about oils and I want to be putting the best at a reasonable cost in my truck. Does anyone know anything about the Valvoline Long Life oil? Thanks in advance for your time and patience.