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Old 03-12-2005, 03:19 AM   #17
Scooby Specialist
Member#: 79493
Join Date: Jan 2005
Chapter/Region: SCIC
Location: Cerritos, CA
2003 WRB WRX Wagon
5 doors > 4 doors


Cruise control, in particular, is forbidden during break-in. Vary the RPM as much as you can within the limits provided (4K). I believe a constant RPM has the effect of polishing the rings and cylinder walls instead of allowing them to wear enough to seat properly. control, never used it and i never will. during engine break in you definitely want your engine RPM to vary to properly break in the engine. it's even good to do brief periods of WOT up to roughly 55mph to properly set the rings in. basically you don't want to pamper your engine like a baby, if u want it to run properly you gotta rough it up a little.

i'd say use synthetic oil on your 5th oil change. dino oil does it job fine for new engines before reaching 15k mile mark. i like Castrol GTX, it's a good dino oil. after that use Mobil 1 or Royal Purple or something. and i use the Puralator oil filter, although i'm not sure if there is much of a difference between Puralator and OEM oil filter
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