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Old 02-26-2012, 06:38 PM   #11 (permalink)
gone-ot
...beats walking...
 
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...GM's Oil Life Monitor (OLM) starts out with a 20,000-mile "guess" assuming the use of their dexos1synth-blend 5W/30, and then 'shortens' that number for cold-starts, idling and slow-speed city driving.

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