I've been a life long user of Havoline dino from day one. Been using 5/30 as that is what the vehicle calls for. With the price of dino going up and up,I decided to switch to Union 76 semi-synthetic for my last oil change. I picked it up at the Big Lots for $1.90/qt. It's from the ConocoPhilips stable of products. So far I'm very pleased. I noticed that it poured easier than the Havoline.