Originally Posted by Coykiam
"ou can switch from conventional motor oil to Mobil 1 synthetic (and back again, if you want), without following any special procedures."
So does this mean you can switch FROM Synthetic to Regular Oil without a problem??? Unless your car hasnt been properly maintained?
According to Mobil's statements, yes, that is ok. That is Mobil's statement.
There's a whole campe that says you can't (see above post) but I've yet to see them provide a reliable source. You hear all kinds of horror stories and even "first hand experiences" from mechanics. But I've yet to see them produce and chemical reaction knowledge, lab results, or engineering credentials.
Mobil is a huge company and making statement like that means they can get into a lot of bad publicity if it's so easy to prove that it's bad for your engine.
What it boils down to is that synthetic switching is like the "change oil every 3000 miles" debate.
Let's see:
- Mobil says switching back and forth is ok
- synthetic BLENDS are on the market (regular oil and synthetic oil mix)
- flushing never hurts, but whether or not it's actually necessary is the controversy