Engine starting and condensation in the case.

[Frodge]

Its kind of a weird, unorthodox question, but my car is in a garage where its pretty warm and it's currently about 70 degrees out. The gas meters are located in my garage and they've been changing them out sporadically. I had to start my car before work for maybe 5 seconds to inch it up. My assumption is that this quick 5 second start did not cause any condensation given the temperatures and I'm concerned that I didn't get it up to operating temperature potentially causing water in the case and or heater box muffler are.

[Floating VW]

Don't sweat it.

The bigger question is why didn't you just push it if you only had to move it a few inches?
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[Frodge]

No room, it's real tight.

[Starbucket]

You need to warm the motor oil all the way up or you will get the white sludge.

[Frodge]

So a literal 6/second start is enough to do this? I didn't realize it would do that in this short of time. Thanks.

[busdaddy]

One of those magnetic block heaters stuck to the sump for a day or two will dry out the oil without all the needless running and plug fowling.
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[Starbucket]

[sjbartnik]

[bluebus86]

water in the motor is not so much only a function of the air's humidity nor temperature, it is becuase gasoline is a hydrocarbon fuel, the hydrocarbon name reflects that fact the the gasoline is composed mainly of hydrogen and carbon atoms. when the gasoline is burnt, the gasoline is broken down and combined with oxygen from the air, that is what ahppens when things are burnt.

combine carbon with oxygen when burning completely and you get carbon dioxide (CO2) and carbon monoxide (CO) Burn hydrogen and you get mainly dihydrogen oxide (H2O, ie water) so burning gasoline results in amoung other things water being produced. this happens even in zero humidity.

this is not a problem if the motor fully warms up, as the hot crank case, and muffler will cause the water to evaporate rapidly and it will be removed, out the tail pipes or out from the crank case via the crank case ventalation system. but short time operation of the motor wont be enough for the the motor and muffler to get very hot, and in that case the water produced will condense on the cold internal surfaces, in the muffler, cylinders ect... and be left there to cause rust. that is why it is not good to run the car only for short times, better to allow it to come up to operating temperature before shutting it down. another good reason to have a propperly working thermostat to assure rapid engine warm up.


C + O2 = CO2 and 2 (H2) + O2 = 2 (H2O) are the equations for the burning of carbon and hydrogen in oxygen.

Keep Buggin!
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