Hot answers tagged

87

Uh ... absolutely not. Salt water will cause corrosion with in the engine block. Salt water is an electrolyte, so will pass electricity which will cause electrolysis. Also, it might be able to handle a bit lower/higher temps than straight water, it doesn't work as well as antifreeze. Antifreeze is usually good to -40°F/-40°C, plus it protects your engine ...


29

Terrible idea. The salt will precipitate and block the radiator fins Of course you know you can dissolve things like salt into water. You probably also know there's a limit to how much it can hold - called saturation. Saturation is dependent on temperature. If you saturate warm water and then let it get cold, the material will precipitate - in salt's case, ...


4

Salt-water (sodium chloride) solution was, and often still is, used for weight/ballast inside tractor and equipment tires, as that cheap alternative to antifreeze in winter. Very nasty stuff and highly corrosive to metals not prepared for it. No way would I want that inside an engine block! Interestingly current trends are towards using antifreeze and other ...


2

Most modern engines have aluminium heads (or other components) for reduced weight, and absolutely require antifreeze in the coolant for it's anti-corrosion properties. Aluminium heads at temperature are prone to corrosion and using tapwater, other than quite temporarily, will allow corrosion to start. Use antifreeze if you don't want to pay for a new engine (...


2

Usually that indicates there is an issue with either a head gasket problem or a cracked block. In either case, it's not good and is going to be major surgery or engine replacement. From your description, there's no way of knowing how this might have come about. Whatever did cause it or how ever it occured, doesn't really matter at this point. You're going to ...


1

I have not hear about using salt water to cool combustion engines. But salt water IS used as coolant in commercial cooling equipment. You could find it in large supermarkets, or in office centers, as it is very convenient, that all equipment in supermarket connected to shared cooling network. For example, they use large industrial chillers mounted on some ...


1

Some marine engines are cooled directly by the overboard water and some of them tolerate salt water as well. Other than that, @Harper answer sums it best. Edit: If I was in a dire need to travel in a sub-freezing conditions (or any other conditions where only e.g. sea water is available, I would pretty much try. Few hours of salty water can't be as bad as 10 ...


1

In addition to the corrosive nature of salt water antifreeze does another duty--it has a higher boiling point than water.


1

You'll want to drain the coolant out, of course. Then fill the cooling system with straight water and add dish soap, or better, an industrial degreaser like Purple Power. Run it for about 30 minutes, drain it out, and do another identical flush (water and whatever chemical you used the first time around). After that you'll want to do a third flush, but with ...


Only top voted, non community-wiki answers of a minimum length are eligible