Hello, I am a new member here although I have been browsing around here for some time now. To give a little background I have a '95 Pontiac Grand Am which just rolled 283,000 miles, a modded '99 Pontiac Grand Prix and my wife an '08 Ford Fusion.
The car in question is my '99 Grand Prix since I have been using synthetic oil in there for the majority of the time I have owned it. I have used mainly Mobil 1, but Mazda uses Castrol oils which I can get slightly cheaper at my employee cost then Mobil 1 (not to start a Mobil vs Castrol debate). For synthetic we get supplied with Castrol Edge Professional O.E. rather then the Edge w/syntec you see on the store shelves. Is there any difference between those two oils or is it just the same thing with different marketing? I sent Castrol an email asking & never heard anything back
The car in question is my '99 Grand Prix since I have been using synthetic oil in there for the majority of the time I have owned it. I have used mainly Mobil 1, but Mazda uses Castrol oils which I can get slightly cheaper at my employee cost then Mobil 1 (not to start a Mobil vs Castrol debate). For synthetic we get supplied with Castrol Edge Professional O.E. rather then the Edge w/syntec you see on the store shelves. Is there any difference between those two oils or is it just the same thing with different marketing? I sent Castrol an email asking & never heard anything back