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Discussion Starter · #1 ·
I have seen the posts about the foggy oil sight-glass in cold weather. Now, I rode the bike (2006 620) at least 1 hour at varying highway speeds the other day. It was around 55 degrees F outside. The glass was still a little fogged, but the oil in the glass looked normal. By the time I made the return trip, 1 hour home, the glass still had a tiny spot of fog. It seems that a little condensation on the sight-glass is normal then, no matter what you do, in cold weather. Kind of like a fogged window in a house? I know one thing, I plan to ride the 620 regularly, a much a spossible, through the winter (here in Virginia).
 

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I don't think it's a problem..just a thing...nothing to worry about.
 

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This is a very common problem.

It has to do with condensation in side the engine. The white "goo" you find on the sight glass is the result of an engine that hasn't gotten warm enough to "evaporate" the water inside, thus resulting in a blender mix of oil and water.

Or so I've been told. The net/net is you are just like the rest of us.
 

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mnemonic said:
This is a very common problem.

It has to do with condensation in side the engine. The white "goo" you find on the sight glass is the result of an engine that hasn't gotten warm enough to "evaporate" the water inside, thus resulting in a blender mix of oil and water.

Or so I've been told. The net/net is you are just like the rest of us.
Exactly. Quit worrying and ride my friend.
 

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Discussion Starter · #9 ·
Thaks everyone for the info. It's kind of weird the first time you see that stuff in the glass. I thought sure I'd be able to get the bike hot enough to get rid of it, and was surprised to still see it.

Mike
 

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I thought thet it was a double layer of glass (like a window) that had allowed condensation to enter...Glad to hear that it is moisture in the oil not allowed to warm up and it just gets foogy.

Foogy, is actually foggy with (2) O,s and only (1) G. [thumbsup]
 

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If the cloudy glass really bugs you run your bike nice and hot and then lean it far to the left and right to wash the hot oil over the site glass. Then shut off the bike and take the oil filler cap off until the bike is cool. Keep in mind that if the area you're riding in has rather moist air it's likely that the cloud will come back. Frequent short rides or riding in damp weather cause the fog when water from the air gets into your oil and isn't evaporated/ let out.
 
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