I've just had the above done, and would like to know...

...how many miles to go gentle for, and at what revs ??

 

I would treat it like a new car,i.e, don't go over 3000 rpm for about 1000 miles and would change the oil at around 250 miles then again after about a 1000 miles.
Thats an expensive repair you've just done so it's it makes sense to be cautious.

 

Thats good advice from Trucker Ted, it is almost like a new engine and the new bits need the full running in period.

Les

 

as said above, but also do not labour the car up a hill and vary your speed and revs during this period also.

 

Mmmm...

Didn't expect to change the oil after 250 miles
or 3000 revs for the whole 1000 miles.

Was thinking maybe 3000 for 500 miles, then 4000 for the next 500 etc.

Still shocked about the 250 mile oil change !!

 

The early oil change gets rid of small metal deposits that will screw your bearings if they remain in the engine for too long.

 

So it's wrong to rev my new WRX03 more than 4000rpm that already did (>4500-4700 sometimes)?
I used to run it around town between 2-4500rpm with lower gears (1-2-3) not too much boost, but yesterday I went for a 300km trip where I run it for short periods about 140-150km/h. I changed also the oil at 200km with 15W/40 mineral Motul as have been suggested not to use synthetic until 1500km.
Should I worry?
JIM

 

So why use mineral oil for the first change ??

Thought it was supposed to be sythetic all the time !!

 

No synthetic oil until the rings can seal completely against the walls, until say 1500-2000 miles!
Synthetic is very slippery thus it "arrests" the brake in proccess.
Or this is my opinion extracted from various topics about running in a new or rectified engine, others may not agree with me, I have only 600km on the clock and have past 6-7000rpms more than ten times (for short periods of course)!
JIM

 

I thought Subaru advise "up to 4000rpm" for the running in period??