Boating

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Changing Engine Oil of 15 or 20 HP 4 Stroke Mercury Outboard Motor

This guide will explain how to change the engine oil and filter of a 15 or 20 HP (Horse Power) 4 Stroke Mercury Outboard Motor. An oil change is usually done after the boating season ends for winterizing or once the engine has run for a certain amount of time as indicated the engine manual.  …

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