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Old 05-09-2004, 12:49 AM   #20
STiMULi
Scooby Specialist
 
Member#: 59381
Join Date: Apr 2004
Chapter/Region: SWIC
Location: Driving down the Psychopath
Vehicle:
2005 Impreza WRX STi
White

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pulled from the Impreza (.pdf) manual...

(This information has probably been mentioned on the site 1 million times. Itallics are my edit. Because I live in the desert, I feel it can not be stressed enough)

Quote:
The proper viscosity helps vehicle get good cold and hot starting by reducing viscous friction and thus increasing cranking speed.

NOTE:

When replenishing oil, it does not matter if the oil to be added is a different brand from that in the engine; however, use oil having the API classification and SAE viscosity No. designated by SUBARU.

If vehicle is used in desert areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used: API classification: SL or SJ. ILSAC classification: GF-3. SAE Viscosity No.: 30, 40, 10W-50, 20W-40, 20W- 50
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