antifreeze instead of water

[ZinRot325i]

Think they come in a Cold 71 deg./Medium 75 deg./Hot 80 deg. Farenheit.
I'd get the cold or the medium. Cost: $20.

Use BMW coolant or a phosphate free coolant or you're asking for trouble.
Scale will build up and could clog the radiator or heater core.
"But I've used regular coolant dur-da-dur-da-DURRRR for 5 BILLION YEARS"
Don't care.
Phosphate deposits will still build up and screw you.
If you care about the health of your cooling system, use phosphate free stuff. You only have to change coolant like every 3 years 40,000k miles anyway.

[SchnellerVert]

2 times on that. Someone is giving you bad info. You should be running a 50/50 mixture at all times in your car.

Water cools faster but offers no resistance to RUST.

[porsche gt1]

Water cools faster but offers no resistance to RUST.

I know that, but water does not prevent you from freezing your engine in winter or having your engine boil the water in the summer. If you use a 50/50 mixture at all times in your engine you do not have to worry about the conditions outside of your car.

[volgapower]

ok got it thank u all

[Digitalwave]

You also run the risk of getting rust in the system if you just run plain water.

Water doesn't rust your cooling system. If that were the case, why would people even run a 50/50 mix then? I run 95% water in my system for most of the year. You just need to run distilled water and nothing else.

[Koony]

Pretty basic principal here; water corrodes metal.

It's the corrosion inhibitors and lubricants in anti-freeze that you will be missing.

Volgapower, you especially should be concerned about using pure water in your cooling system. European countries tend to have very hard water due to antiquated or complete lack of treatment facilities.

Where in any automotive manufacturers manual does it say to use 0-30% antifreeze?

Some of you guys will mod anything.

[NC325iC]

first off, 50/50 is overkill even for the benefits of anti corrosion. 5% and a bottle of water wetter and youve got all the anti corrosion you need

[Koony]

..........and second?





Write me when your waterpump goes out.

[DanielHStout]

OK its simple water + metal + heat = severe corosion. Theresno point in running less than at least 25% antifreeze. The gain of running straight water isn't that significant, the damage you can do is. Failing water pumps rust and scale build up are all bad things. Running a little cooler isn't that cool.

[SchnellerVert]

Distilled water and Redline water wetter will aleviate the ferous oxide.