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Originally Posted by Pete Geither
To me it is pretty unbelieveable that the coolant has lost it's freezing protection after 30 months.  I don't buy it. |
The only way it would do that is if it was diluted with water.
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Originally Posted by suginami
Testing aside, Mercedes has a 3 year replacement interval on coolant, regardless on mileage.
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IIRC on the Zerex G05 bottle it says 5 years / 150K miles.
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Originally Posted by Arthur Dalton
It 40 C/F , +/- ...............
Actually , if it is -40, it does not make any difference if it is C or F .....
...........ya know what I mean ???????
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Yes I know -40 is about the same both in C and F. If he meant 40F that's actually impossible since that's above the freezing point of water. -40F on the other hand, should be sufficient and if I recall correctly that's about 50/50 water/ethylene glycol mix.