Quote:
Originally Posted by engatwork
I'm seeing a good bit of 7+ year old BMW's come in with cooling systems (plastic reservoirs, radiators) that are cracking/leaking. Is their plastic just that bad or is this an indication of not changing the coolant every couple years? I have about come to the conclusion that it is not if they start leaking but when.
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Not only frequency of changing coolant. Correct coolant even more important as using one that is not compatible with the plastic will result in the plastic breaking down. Similar thing with MB top tanks on 300D 123.
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I no longer question authority, I annoy authority. More effect, less effort....
1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles 
1987 250td 160k miles English import 
2001 jeep turbo diesel 130k miles 
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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