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Re: Gunk in Radiator coolent (archive)

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Posted by Alex Lynch on January 01, 2001 at 12:46:26:

In Reply to: Gunk in Radiator coolent posted by Mike on January 01, 2001 at 09:12:15:

How old is your coolant? If it's more than two years old first try draining, flushing and re-filling the coolant. Drain the block as well as the radiator. The block drain plug is accessible from below on the driver's side between cylinders five and six. Use a phosphate-free coolant and mix with distilled water to avoid mineral buildup in the aluminum radiator and the coolant passages in the cylinder head. Run the car for a couple of weeks after changing the coolant then look at the reservoir again.


Alex Lynch
1992 735i 194,000 miles
1972 2002 187,000 miles

Hi E32 fans,

I have a small headache bugging on me, some gunk was found to deosit on the coolent cap after some driving. Some one told me that its might be a cracked engine cap or engine block or head gasket, which is very expensive to repair. Another friend told me that it could be a leaky tranny coolant valve, and cheaper to repair. Do you guys have any idea on what might be wrong?

Thanks and Happy Year 2001.


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