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Old 28th July 2019, 16:46   #11
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
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Quote:
Originally Posted by mss View Post
This is a long shot.

The additional load placed on the engine when the aircon is drawing power will lead to a larger vacuum in the inlet manifold. Could it be that as a result of this larger vacuum, a small amount of coolant is being sucked in past a marginally sealing IMG?
Wouldn't you get a larger vacuum by simply driving faster ??
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