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Turo · 06-02-2005, 06:14 AM

I am getting conflicting information about coolant change/flush intervals. Some say that the ethylene/glycol mix does not really need to be replaced unless there has been a problem with the coolant system and the stuff has gotten contaminated. Some say that the coolant should be replaced every 3 years no matter what; this is probably what also BMW manuals say. Sub-zero temps are not an issue where I live but I am concerned about corrosion inhibitor performance over time - my ti is a low mile car and sits idle a lot. Then again, aren't the radiator, engine block, cylincer head, etc. all aluminum, so what is there to corrode? Can anyone help me out here.....

06-02-2005, 06:14 AM	#1
Turo Junior Member Join Date: Jun 2003 Location: Bellevue, WA, USA Posts: 26 iTrader: (0) Photo Gallery	Coolant Change Interval I am getting conflicting information about coolant change/flush intervals. Some say that the ethylene/glycol mix does not really need to be replaced unless there has been a problem with the coolant system and the stuff has gotten contaminated. Some say that the coolant should be replaced every 3 years no matter what; this is probably what also BMW manuals say. Sub-zero temps are not an issue where I live but I am concerned about corrosion inhibitor performance over time - my ti is a low mile car and sits idle a lot. Then again, aren't the radiator, engine block, cylincer head, etc. all aluminum, so what is there to corrode? Can anyone help me out here.....