As usual, Larry has hit the nail on the head. Follow the FSS and you should not have any problems. If, however, you think it's a conspiracy, then go ahead and change it in between FSS intervals.

At 5000 miles, I drained (yep from underneath) my 02 C320. The oil (Mobil 1) looked like it just came out of the jug. At 10k the dealer changed it on FSS. I now have 7000 on that change and the oil still looks good to the naked eye. I have about 3000 left before the FSS kicks in again.

I think at 5000 after that I'll change it myself again since the part of the dealer change I don't like is the methods they use to change the oil (sucking it out the top). It will make me feel good to drain it all out the bottom again. Probably not necessary, but it's my car, my money, etc.... Peace-of-mind! Anal? Whatever... it also gives me a chance to look at the underside of the car for any other potential problems...


Brian








Larry wrote:

If a person will do what MB says and USE SYNTHETIC OIL, then the FSS intervals will work. This is much more than marketing hype. Even if it is marketing hype, no one holds a gun to your head and tells you that you can't change your until the FSS system says you can. What's with such conspiracy theories anyway?