[hserus]

Plain water is only for an emergency especially as the Mahindra coolant is already pre mixed with water.

Just drain all the coolant + extra added water (probably tap water) and refill with whatever colour Mahindra coolant they provide. Should be fine then.

Originally Posted by batish

This level is after an overnight break. The issue is there was a recall for replacement of radiator fan shroud. They had to remove the hoses which come from reservoir. During that time it had lost a fair amount of coolant.

Mechanic had simply topped it up with plain water. No coolant pre mix was added then. It has been 3 months since the replacement.

Either that water has evaporated or one of the hose is leaking very minutely somewhere.

[Mortis]

My Dzire is out of warranty and due for servicing next month. Maruti advises a coolant change every 2 years, probably because it uses IAT. I'm planning on switching to a long life coolant (Castrol Radicool Pro+ or whatever) and doubling the change interval.

The procedure I'm planning is as follows :

1) Drain as much of the old coolant as possible.
2) Add filter water and run till the thermostat opens and then drain. (Might skip if not required)
3) Filter water + Radiator and coolant flush. Run for a decent amount of time to make sure it circulates well then drain.
4) Filter water cycle
5) Distilled water cycle. Might even run on this for a couple of days
6) Drain and fill OAT coolant

Does this seem sufficient to eliminate the chance of old and new coolant mixing ?

Also just came across Silicate free coolant. Should I opt for this instead of the regular version of OAT ?

[hserus]

Check the manual for when Maruti requires a coolant change, not what the service advisors suggest.

You can use any good coolant that meets the spec your car manual requires.

No need for a coolant flush, just pour in plain distilled water three or four times till the water comes out transparent instead of with a green tinge from the old coolant.

Almost all mass market coolants are borate / silicate / amine free regardless of the colour these days. Yes Castrol Radicool is a very good brand.

Originally Posted by Mortis

My Dzire is out of warranty and due for servicing next month. Maruti advises a coolant change every 2 years, probably because it uses IAT. I'm planning on switching to a long life coolant (Castrol Radicool Pro+ or whatever) and doubling the change interval.?

[Mortis]

Originally Posted by hserus

Check the manual for when Maruti requires a coolant change, not what the service advisors suggest.

You can use any good coolant that meets the spec your car manual requires.

No need for a coolant flush, just pour in plain distilled water three or four times till the water comes out transparent instead of with a green tinge from the old coolant.

Almost all mass market coolants are borate / silicate / amine free regardless of the colour these days. Yes Castrol Radicool is a very good brand.

It's every 2 years for the regular coolant. Now that it's out of warranty and going to get serviced by the FNG, I plan on switching to long life coolant. I have mentioned this in my post. Hence, my query.

[hserus]

Originally Posted by Mortis

It's every 2 years for the regular coolant. Now that it's out of warranty and going to get serviced by the FNG, I plan on switching to long life coolant. I have mentioned this in my post. Hence, my query.

Even the more expensive coolants for this spec are quite cheap and two years or 20k km would max stretch to three years or 30k km with a long life. Especially under city conditions.

Change every two years and it is a simple process. Don’t exceed the manufacturer recommendation regardless of what brand you buy.

[abhi9044]

Hello Bhpians,

One of my friends recently purchased a new Tata Nexon. It has done around 250 km till now but the coolant has changed it's colour to Yellow. Genuine Tata coolant is in blue shade. Even during the PDI the coolant was in blue shade, but after 250kms of running, it has changed it's colour to Yellow.

We decided to take it to the workshop tomorrow. Any ideas on how this may have been possible?





I'm suspecting a faulty coolant from the factory.