I was recently considering putting synthetic in my '04 WRX and so I went to the dealer to talk about putting it in on my next oil change - since the dealer is doing mine for free - when the dealer mentions he heard from their rep that you should wait until 15k miles on the WRX before you switch to synthetic.
Now I've read almost all the threads here and never saw any mention of that. I know some cars ( Vette, 911) come with Mobil 1 from the factory. Has anyone else heard about this.
The Subaru rep told my dealer that it's preferable in this application and several others because it allows more time for the rings and other parts to seat.
I'm 6k miles in on my car and was shocked to hear that I ought to wait. Has anyone else heard anything on this subject.