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Engine Oil Change
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02-26-2012, 07:38 PM
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gone-ot
...beats walking...
Join Date: Jul 2009
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...GM's Oil Life Monitor (OLM) starts out with a 20,000-mile "guess" assuming the use of their
dexos1
™
synth-blend
5W/30, and then 'shortens' that number for cold-starts, idling and slow-speed city driving.
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