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My 03 with 120,000 mile on it started using oil on my most recent oil change. I run rotela 15-40 have 4000 miles since this change. Everyday driving, hwy, county rds ect.. It just started, every other change its been right up to full. It's down 2 hash marks on the dip stick, not sure how much oil that is.

Anyone have this?
 

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The engine can use oil. IIRC the allowable spec is 1qt per 100 gallons of fuel used
 
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