Birth, Drift, Death...
Join Date: Jun 2002
Location: Drifting Brisbane...
Re: 'Normal' Coolant Consumption??
i think all cars do use a little.
at work every car i service requires a little top up of the rediator coolant, Gen IIIs seem to use the most, then astras, and surprisingly the commo V6 sh!tter seems to use the least :S
i think what happens is, as the car heats up and the coolant expands, the excess air gets vented to atmosphere through the relief valve in the radiator cap.
this air would logically be laden with water particles, due to the high temp of the coolant at operating temperature, so it would vent as a sort of steam.
as the car cools down, the valve works the other way, letting dryish air into the system, preventing a semi-vacuume in the system, then next time you go for a drive, the process repeats...
so, in short, yes, i think that a little coolant loss over time is normal, and you should not worry.
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