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Easy antifreeze test
Posted: Fri Jul 22, 2011 9:46 pm
by 4ePikanini
With an upcoming trip to Rhodes I wnted to make sure my antifreeze was up to scratch.
I opened up the radiator cap (when it was cold) and inspected the clarity - it was clear as cooldrink with the green tint of antifreeze.
I then drained half a glass of coolant from the overflow reservoir and put it in the freezer.
12 hours later and it's still flowing with absolutely no sign of ice or crystals.
Looks like I'm good to go - now I just need to find some diesel additive to stop it from gelling.
Re: Easy antifreeze test
Posted: Sat Jul 23, 2011 7:54 am
by macjohnw
John Likes This.
Re: Easy antifreeze test
Posted: Sat Jul 23, 2011 8:26 am
by RoelfleRoux
"So maak mens":
Ingredients:
20L paint tin, empty x 1
Sharp object x 1
Hammer x 1
Coal, 20kg
Fire lighter x 1
Matches
Tequila x 1 botlel
Take the paint tin and punch numerous holes into it with the hammer and sharp object. Insert a few fire lighters and fill tin with coal. Using the matches, ignite fire lighters through the small holes. Down a few Tequilas and blow vigorously through the small holes to get the fire going. When the fire lighter has burned out and the coals are glowing, insert paint tin under the Pajero engine. Drink rest of Tequila and go to bed.
Re: Easy antifreeze test
Posted: Sat Jul 23, 2011 9:23 am
by 4ePikanini
so is it only the engine that's at risk? What about the fuel in the tank?
Re: Easy antifreeze test
Posted: Sat Jul 23, 2011 12:51 pm
by 4ePikanini
As an experiment I dropped an ice cube in the sub zero container of antifreeze and put it back in the freezer.
Any guess as to what happened to the ice cube?
Re: Easy antifreeze test
Posted: Sun Jul 24, 2011 7:10 am
by RoelfleRoux
A) It remained frozen... - the surrounding fluid is sub zero, so there is no reason for the cube to melt.
B) It melted... - the chemicals in the antifreeze reacted with the outer layers of the cube and that would melt. This process is likely to continue until the melting ice diluted the antifreeze enough to render it useless.
I go for ............... B
Re: Easy antifreeze test
Posted: Sun Jul 24, 2011 7:59 am
by 4ePikanini
The antifreeze has been in the freezer for nearly 48 hours and the ice cube in that for nearly 24hours. The ice cube is about halfway melted.
I suspect the tendency is for the ice cube to rather be dissolved into the AF than the other way round - else water would separate out of the AF mix and start freezing
Just my theory - I'm not a chemical engineer

Re: Easy antifreeze test
Posted: Sun Jul 24, 2011 7:06 pm
by RoelfleRoux
I think my point B is the winner here!
Re: Easy antifreeze test
Posted: Sun Jul 24, 2011 7:44 pm
by 4ePikanini
I just checked again and the block is melted just past halfway. I can now spot very small fragile ice crystals floating around
Re: Easy antifreeze test
Posted: Mon Jul 25, 2011 7:26 am
by digger
You can buy litmus strips here.Dip into radiator neck.They have two sections on the strip.One for the Ph the other for
glycol content (%). What about a antifreeze hydrometer