[swathyd]

My fiat adventure has clocked 12500 kms. Recently while regular servicing the technician put to my notice that the radiator coolant has lost its properties( he gave a demo showing that it is like water now). I bought the car almost 2 years ago, since then i havent changed coolant. The guy told to flush the radiator before filling new coolant . He was warning that without flushing the new coolant will be futile.

Is there any need to flush before filling coolant ?

[HappyWheels]

Flushing will remove any of the old slush and clean up the radiator. I would say it is a good thing to do!

Go for it.

[Android]

Yes definitely it will help in increasing cooling efficiency of engine. What ever salt or oxide is there in the cooling cavity and radiator tubes will get removed. Also the lives of rubber components like hoses, parts of thermostat valve will increase. But do follow the manufacturer's spec in the coolant to water mixture. Best will be to use distilled water with coolant.

[DirtyDan]

Originally Posted by Android

Yes definitely it will help in increasing cooling efficiency of engine. What ever salt or oxide is there in the cooling cavity and radiator tubes will get removed. Also the lives of rubber components like hoses, parts of thermostat valve will increase. But do follow the manufacturer's spec in the coolant to water mixture. Best will be to use distilled water with coolant.

Yup! What this guy said. Two years is too long. This needs to be done at least once a year. Twice a year would be better. It is corrosion in the radiator that you are fighting primarily. Corrosion is more time dependent than Kilometer (distance) dependent. That you drive few miles does not enter into it. And, yeah, you have to flush out the old bad stuff before putting in the new good stuff. That is standard and correct.

The reason for using dystilled water is that it has low or no mineral content. Mineral content causes corrosion.

[swathyd]

Which brand is the best ? How much and what quantity ? Also how to use ?

[gd1418]

Swathy,

As a thumb rule, replace coolant at every fourth service if you service the vehicle at every 5K Kms.

Chevron radiator flush is the best if availalble

[cancerm]

Hi
Even OWS Flush Radiator is good, I have been using it & it works pretty well.

Rgds

[smrtdvl]

My Vista needs a coolant change and the SA advices me to flush it before going for the new coolant. The car has run 25000kms and is 2.5yrs old. This is the first time am going in for a coolant change. Pls advice whether flushing is a must?

[DieselFan]

Originally Posted by smrtdvl

My Vista needs a coolant change and the SA advices me to flush it before going for the new coolant. The car has run 25000kms and is 2.5yrs old. This is the first time am going in for a coolant change. Pls advice whether flushing is a must?

I have done 1.1L kms and have not done flushing yet. Not sure why is the SA suggesting flushing. First ask him to give this in writing and see how he backtracks. In my opinion just change of coolant is sufficient.

[carbookie]

Originally Posted by smrtdvl

My Vista needs a coolant change and the SA advices me to flush it before going for the new coolant. The car has run 25000kms and is 2.5yrs old. This is the first time am going in for a coolant change. Pls advice whether flushing is a must?

See the service manual.

Do you see sludge etc in your radiator cap? If no, then refuse flush.

[aargee]

I've a 9 years old Maruti WagonR, till date we only have flushed our toilet, not the engine not the radiator hehe