I used it in Company trucks for 5,000 mile oil changes. It seemed like Good oil, no complaints. Didnt burn any oil between changes. I wouldnt hesitate to use it in a pinch in my personal vehicles. If I didnt land good deals on Name brand oils, Id be using that. I used the 5w20, 5w30 and 10w30, all with good results. I used the Advance Auto brand 5w20 and The trucks almost immediatly went thru a quart of oil. Id stay away from that stuff. Nothing wrong with Walmart conventional oil at all. If you look at the virgin oil samples, it does well. It just doesnt have any catchy sludge commericals or golden horses running with it.