I hate to ask yet another "what oil to use?" question, but I really can't seem to find a consistent answer.
I've been using Mobile 1 5w30 since I bought my 06 WRX used. Now I hear about the banjo bolt filter problem. This forum tells me one type of oil to use... I call the dealership, they all say they use traditional oil in all of thiers (sunoco to be exact... I can't find a good place to buy it). They say that synthetic tends to burn up faster, and therefore can lead to more problems if you let you changes go too long (I'd been letting mine go 7500 miles... apparently 3k is what to do).
I was in dire need of a change, so I just ran up to the jiffy lube and they put traditional Penzoil in. I bought some Castrol GTX 5w30 (a synth blend) but I really don't know if I should use it or not.
Really... what should I be using? I just want to know what I should be putting in my car to avoid blowing it right the hell up. I thought I was being good with M1 5w30... apparently I was mistaken.