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Old 02-13-2005, 02:13 PM   #24
Scooby Specialist
Member#: 33868
Join Date: Mar 2003
Location: Chesterfield, MO
2003 wrx


I thought the way the bearings worked was an oil film between the bearing and the crank. This film doesn't squeeze out under pressure due to the surface tension of the lubricant. The oil circulation just replenished this film. If you just drained the crankcase this film wouldn't go anywhere and still lubricate.
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