I was always taught that our engines will run more efficiently at higher temperatures. This is the reason for today's higher pressure cooling systems and higher boiling point permanent antifreeze. I believe the older engines were limited to the 180 / 190 range only by the alcohol antifreezes used at that time. Anyone have some informed comments on this.

PS Great idea on letting the air out at the sending unit !!.


1941 Chevy Master 3/4-Ton
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Born to fish, the truck is only a hobby.