Coolants - Pick the right one!

[ilango[speed thirst]]

When there is a fault in cooling system , the temp goes up . Just stop car if you notice it.

there is some life time for each variety (let name them as variety) of coolant. green one have the least .
change according to age and milage


Mixing proportion should be followed exactly(Not to the decimal point though).


You need to flush old coolant and pour in new mix . You 'll have a drain cork at the pipe connection the radiator and engine part .


Procedure
Start up the engine

Run for few min

drain the old coolant

pour in fresh water (un salted) , if you are afraid use distill water for this too

keep poring for few min , say 2 to 3 min with some interval after some 10 15 sec

after that stand idle for few min , for these water to drain ,


close the drain cork

pour up new coolant mixed with distill water.

that it , new cooling liquid added.

[cooldhaya]

Thanks Ilango for the procedure though i knew it before , i have still not tried it till now!

[sb-alto]

Thanks Shynish. A very important and informative thread.

I used the Maruti provided coolant in my Alto for first 4 years without a change. Next I decided to go for Motul Inugel Optimal30 coolant which was borate/silicate/phosphate free. The MASC people did not object the use of it and it lasted for 3 years until it became translucent in colour.

Next time I could not get Motul and using Delphi Green coolant now. No problems with any coolant. Never had engine heating problem whatsoever.

I never used a coolant flush although many such products are available in the market

[Shynish M]

Nice to hear that you are taking care of the coolant and your radiator. In fact flushing is not required unless there is a heating problem or you suspect a possible clog in the supply system. But when ever you are changing the brand of the coolant, it is wise idea to replace the coolant completely. The only reason is each company will have their own chemical formula even though all these products are based on the same stuffs!

[sb-alto]

Yes, thats correct. Coolant should not be mixed.

Even the job of preparing a coolant with 50% or 33% concentration is a tough job as we do not generally get perfectly distilled water at home. Boiled water has sediments and bottled drinking water has many salts which cannot be perfectly distilled. That is the only reason I use ready coolant always.

Another info : Coolants are supposed to be highly poisonous. All coolants have this warning below the bottle. Please be careful while using it.