what determines freezing/boiling point in coolant
01-22-2018, 03:34 PM
#1
Junior Member
Thread Starter
what determines freezing/boiling point in coolant
I have a
tester which allows one to determine the freezing point and boiling point of the coolant. Am I correct that freezing point is lower if there is more anti-freeze in the coolant and less water? And on the other hand, the boiling point is lower in case there is more anti-freeze in the mix and less water? In other words, anti-freeze helps to make sure that coolant does not freeze, but at the same time it brings the boiling temperature lower?
01-23-2018, 08:38 AM
#2
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1988 507d, 1999 312d 4x4, 2001 311cdi 4x4
Think it depends on type of antifreeze ... cheap methanol type anti freeze lowers boiling point whereas ethylene glycol (more expensive) raise boiling point as well as lowering freezing temperature..... boiling point is also affected by the pressure of the cooling system
good antifreeze tester should differentiate between types of antifreeze
good antifreeze tester should differentiate between types of antifreeze
Last edited by marktinkerman; 01-23-2018 at 08:39 AM. Reason: adding bit more
02-04-2018, 09:43 AM
#3
Junior Member
Thread Starter
Think it depends on type of antifreeze ... cheap methanol type anti freeze lowers boiling point whereas ethylene glycol (more expensive) raise boiling point as well as lowering freezing temperature..... boiling point is also affected by the pressure of the cooling system
good antifreeze tester should differentiate between types of antifreeze
good antifreeze tester should differentiate between types of antifreeze
