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Change the oil and filter and let the engine get up to operating temperature. Replace the oil and filter again if it shows signs of dirt. if possible get one of those magnetic oil drain plugs that will pick up metal particles from the oil.

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โˆ™ 2015-07-15 19:14:04
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Q: How should you clean out the old oil sludge and residue from the crankcase of an engine that has been sitting for a year?
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