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not sure about damage or not but I've just bled the system on my E87 N52 engine, really easy with the electric water pump, not sure if the E46 is the same?
watch for it flattening the battery because it runs for 15-20minutes -
I don't know your exact car application but I belive it would be better to bleed it properly. You might not notice that you have air pockets within the system, but that can create cavitation which basically destroys the inside of the water pump.
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This has made me wonder if the thermostat is broken on my Polo. Gets up to temp fine in summer but barely gets above min during winter. Seems to be worse on the motorway as well. What was the sympton of yours before you fixed it?
pryally
paulbiche
Turkish
@Nef
Finally got round to doing the thermostat as the weather warms up. Better late than never.
Some hard to reach bolts, one dropped into the belly of the beast (and then retrieved), managed to not get coolant everywhere. Runs straight to temp now. Bosh!
I haven’t bled the system. Just ran engine to temp and topped up.
Will I do any damage if I run it and top it up as I go along, checking each day before I drive it etc.
Or should I make the effort to do the bleeding properly before driving it? Ie, will air in the system do any damage while it works it’s way out?
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