E46Fanatics - View Single Post - DIY: Thermostat Replacement with pics
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Old 01-20-2011, 08:36 AM   #31
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Join Date: May 2007
Location: Toronto, ON, Canada
Posts: 170
My Ride: 2002 325ci
Originally Posted by Sforza209 View Post
If their is splashed residue around the area of my radiator fill reservoir does that mean that leak could be from the thermostat?
I just replaced my thermostat last weekend. I have so much heat from my vents now!
I used RTV sealant to prevent any leaks in the future. The old gasket has melted/deteriorated in some places. In my case, the problem was that the thermostat was stuck open.

If you have leakage around your reservoir, then could be that your reservoir is cracked, your coolant overheated and the pressure cap released some pressure/coolant, or maybe your bleed screw is not tight/leaking.

Try cleaning up the area and pinpointing where it's coming from.

2002 BMW 325ci /// Sport Pkg /// 5 spd
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