I just took my car in for an oil change. I had them use Mobil 1 Syn as usual, but I think they may have put in 10w-30 and not 5w-30. I searched and found a thread that recommended that you didn't go any higher than five, and if you used anything other than 5w-30 you should be using 0w-40.
Alright, so here's my question is my car alright to drive for the next 3k-5k miles, or do I need to go back and get them to put in 5w-30?
