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Posting a reply to: Re: Yamaha 4-stroke winterization

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hi


You are replying to:
Jerry Newman
Posted 10/31/2019 12:04 PM (#949229 - in reply to #948181)
Subject: Re: Yamaha 4-stroke winterization




Location: 31
Steve, I like your idea of just spraying the cylinders rather than fogging. Do you agree with the content of this post I found?

***4 Strokes really don't need to be "fogged". The true definition of fogging is spraying storage oil into the intake while the engine is running to coat all the moving parts with oil. A 2 stroke requires it because by nature, it is the only way to get oil to all the parts, both on the top and bottom end, (crankshaft, bearings, etc). Just spraying oil into the cylinders is not fogging.

4 strokes do not need fogging because pretty much all the moving parts are already coated with crankcase oil. Fogging a 4 stroke does not even reach or have any effect on 99% of the moving parts in a 4 stroke. All it does is coat the intake passages (which may even be a bad idea for an EFI motor) and get a bit of oil into the combustion chambers and valves. You can do that by pulling the plugs and spraying oil into cylinders.***

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