In Reply to: what I learned about antifreeze posted by ButtonRock on October 13, 2018 at 03:29:35:
The original 9N Operator's Manual specifies to only use 'soft water' or rain water in the cooling system. Well water, of which many farmers only had, contains vast amounts of minerals and compounds that will affect operation. When the water boils and cools, it can leave mineral deposits like calcium and iron deposits in the system. It was recommend back then to drain the radiator and the block if temps were to drop down below freezing overnight. Original Ford systems used an alcohol mix. Anti-Freeze came along and eliminated this practice. In these N's it is best to use a 50/50 mix of distilled water and antifreeze. Avoid using the pre-mixed stuff with water in it already. There is plenty of chatter in the archives on this topic as well. As an N-Owner and Operator, one should perform a basic checklist of things before firing up the tractor for use. Checking ALL the fluids is foremost. The engine is cold and fluids have settled since the last time they were used. Likewise the radiator is also cold and you can remove the cap and visually check the coolant level and condition.