Coolent to water ratio for st182?

[ThoughT ExperimenTs]

Hi on tuesday i've booked my car in to get the top plastic bit replaced on my radiator for $220 excluding. I'm sure I read something about cars needing the correct water to coolent ratio, does anyoen know it so I can make sure they put in the right amount?

Cheers

[Lloyd]

50:50

[ThoughT ExperimenTs]

cheers, Do you know what sort of damage could happen if it wasn't?

[t0ms]

its usually written on the bottle of coolant the correct ratios

but roughly

minimum 33% coolant to 76% water

recomended 50% to 50%

maximum 70% coolant to 30% water

cheers
tom

[t0ms]

cheers, Do you know what sort of damage could happen if it wasn't?

do a test. get a polystyrene cup. put half water and half coolant in it and then sit it in an ice cream container elevated so that the cup is off the base

leave it 12 hours and see how much and what it is that is left it the cup

coolant, glycol is a very small molecule (much smaller than water) so will have the ability to more easily get into gaps eg if you headgasket is slightly untorqued then the glycol could have the opportunity to head for you cylinders.... which is bad

cheers'
tom

[Lloyd]

Basically the coolant is there to raise the boiling point of the water and lower the freezing point of it. Too much and the freezing point starts rising again, too little and the boiling point wont be as high (depending on the coolant. I think Ethylene glycol - the green one - acts like this. Red stuff might be different). 50:50 is where you want it

Pretty much all manufacturers will recommend a 50:50 mix of coolant to water