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Foam on dipstick

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I have a DRZ 400e model 2001. I have observed a milky film on my dipstick when i check my oil. I thought at first it might be condensation in tthe oil due to my short hopping the bike bike to work in the cold weather. That being said after running a 100 mile offroad event i expected the oil to get hot enough to diperse of a condinsation in the oil. I am running Amsoil 10/40. I am not losing any coolent. Coolent level stays up to correct level. Bike runs well. Whats up? :smirk: Mitch

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Have rode threw any big puddles where the engine couldve been possible submerged? Or have you taken to be washed at a car wash? If not you might have a cracked block some where.

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Is it possible that you're losing coolant, but just so slow that it's not really noticeable? Does the coolant have oil in it? Keeping the level correct by leaking 'backwards' at a point with lower coolant pressure... I think quite a few of the early LTZs and DRZs had problems with corrosion in the crank cover where the water pump and passages are. Maybe bad water pump coolant and/or oils seal(s)? wouldn't hurt to pull the WP cover and take a close look. Gaskets are pretty cheap, and so are the seals for that matter.

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Normal, mine has been doing that every winter for years. I installed a t- stat and problem solved. If there is no coolant loss you are good. My bike would never cook off the moisture, just change it and no problem till november.

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Normal, mine has been doing that every winter for years. I installed a t- stat and problem solved. If there is no coolant loss you are good. My bike would never cook off the moisture, just change it and no problem till november.

robb5, i beleive this is the case. I thought a 100 mile offroad race, might cook it out. Ill change the oil and observe it while the weather is hot. I will also take Andys advice and inspect water pump system. Thanks guys for your input. Keep it on one wheel. Mitch. :smirk:

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