BaysideRS4

Any problems with switching to synthetic (Mobil 1) at 3,000 miles?

Innovator

Some say it really doesn't matter. Sooner or later it would break in 100%. Many high-end cars come with synthetic oil for break in.

Although some would totally disagree with that logic. Royal Purple, for instance does not recommend using their oil for break in. It has too much film strength.

I just switched to Royal Purple #21 Racing Oil. I can honestly say that it is superior to anything I've used before.

I now get 34 MPG @70 MPH on the thruway, up from 28.5 on level road. That means much less friction. Also, the engine has quieted down significantly compared to how it sounded with Mobil 1 0W-30. It even revs easier then before.

I've never seen that much of a MPG difference with any oil or oil additives before. I'll be selling and using it at my shop now instead of Mobil 1. I'm really freaking impressed! I have to thank MC (Clark) for turning me on to it.

I hope I don't jinx my turbos by saying this, but they seem very happy :-)<ul><li><a href="http://www.royalpurple.com">http://www.royalpurple.com</a</li></ul>

S4carl

my dealership would not let me do it.

DrugDoc97

Did they give you a reason why not?

BaysideRS4

My dealer wants to put in 20w/50 dino - I certainly don't trust them on this

funkadelic

just had my 5k service last week...had the dealer put in Mobil 1 0w-30 and they had no probs with it

BaysideRS4

Did they carry it or did you have to bring it in yourself?

funkadelic

brought it in myself..7 quarts.

S-Curve

I just did it myself....never bothered asking

frank

other than the manual specing 0W-30 or 5W-30? Did your dealer say why they don't go by the book?