My 2007 I4 has abruptly started using oil. I have been using Motorcraft semi-synthetic 5-20 the last several changes, which is made by Conoco, and considered a good buy as it has a large synthetic component, but sells for dino prices. I'm not a believer in synthetic but don't mind it if it doesn't cost me more.
I won't be able to get to the dealer for a while, and need to do an oil change, so Iam wondering if I might improve oil mileage by going to a 5-30, or even 15-something.
I won't be able to get to the dealer for a while, and need to do an oil change, so Iam wondering if I might improve oil mileage by going to a 5-30, or even 15-something.