got boost

what brand of oil does the factory use?...or what is a good kind to use because im almost down a qt.

Wingless Wonder

iTrader: (7)

How many miles on your '06 since last oil change? If my engine was down a quart, I would go ahead and do an oil change if it was close to the scheduled time.

The factory uses conventional petroleum-based oil, AFAIK, and likely 5W-30 weight. You can top off the crankcase with any name brand oil that meets the minimum specs given in your Owner's Manual, and that specification includes just about every big motor oil producer that makes automotive oils.

I use Mobil 1 5W-30 because it's readily available, while others are satisfied with conventional motor oil changed maybe every 3000 miles. Red Line is another popular synthetic oil. Stick with the factory maintenance schedule or change the oil and filter more frequently if it gives you peace of mind.

Do not overfill the crankcase. I don't know what the system capacity is on an '06 but my car takes 4.8 quarts, not 5 quarts. You want to keep the oil in the sump away from reciprocating engine parts like the crankshaft.

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"…axles of evil…" - george w. bush

colorado_sport

hmm i did not know Wing good info

93Impreza

I personally like Royal Purple.

got boost

just regular not synthetic right?

driftin240

I wouldn't run synthetic until you have at least 6k on your car. You can do it anyway you like, but usually people run regular oil for a "break in" period of 6-10k miles.

driftin240

And your 2.5L Turbo should have the capacity of 4.8qts just like the previos model WRX or STi.

wimprezax06

iTrader: (17)

i just change to mobil1 synthetic when i hit 10k miles on my 06 wrx

impreza-tux-121

after 3K i just switched rite on to synthetic oil. might as well if you have to do it sooner or later

93Impreza

Not sure if you meant me.. Royal Purple is synthetic only.