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Old 01-30-2010
Jaywalker Jaywalker is offline
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Take this for what it's worth from a boat/diesel newbie, but a one-off oil analysis on a gasoline engine wouldn't tell you much.

Oil analysis is valuable for spotting trends, and you don't get that with one sample. Also, the lab will want to know the kind of oil in order to identify additives, and many times you won't know that on a new vehicle. On a pre-owned car, I change all fluids and filters when I first buy it, then take the oil sample right before I change it the next time and all subsequent changes.
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