Anti-freeze does raise the boiling point and lower the freeze point ,but as mentioned above, does not dissipate heat well at all.

I live in a hot climate where winter is non-existent. Using an approx. 30% coolant-70% water mixture, I see reduced temps as reported by the temp. gauge. This reduction is in the 5-8 degree F range.

Every little bit helps.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"