[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.

[(Alok)]

Bhpians
What is a non-antifreeze coolant?
Why these are having shorter life than normal coolant?

Here are some examples:

1. Golden Cruiser
a) Explorer coolant: 5 years life
b) Eco safe xp (non anteefreeze coolant): 1 Year life

2. All hella coolant are non-antifreeze

In plains, will it be better to use non-antifreeze coolant?

Thnaks

[Joli]

Which will be the best coolant to use for the Hyundai Creta diesel AT of 2018 vintage? Since I got the car used, it was running on green coolant and as confirmed by the Shell attendant, it is in good condition. I want to now change the coolant as that is one fluid I haven't changed yet in the car. Pre-emptive measure, if you will.

Shell products, I believe are trustworthy. However, I am also veering towards Hyundai's coolant. The one that they use these days is pink in colour. Confused!

[hserus]

Originally Posted by (Alok)

Bhpians
What is a non-antifreeze coolant?
Why these are having shorter life than normal coolant?

Won’t make a difference in hot weather plains if you change at the schedule indicated.

Originally Posted by Joli

Which will be the best coolant to use for the Hyundai Creta diesel AT of 2018 vintage? Since I got the car used, it was running on green coolant and as confirmed by the Shell attendant,

Most coolants sold regardless of the colour are multi vehicle compatible. Check what coolant your car’s manual requires and use that specification of coolant, regardless of what colour it comes in.

[sagarpadaki]

Originally Posted by Joli

Which will be the best coolant to use for the Hyundai Creta diesel AT of 2018 vintage? Since I got the car used, it was running on green coolant and as confirmed by the Shell attendant, it is in good condition. I want to now change the coolant as that is one fluid I haven't changed yet in the car. Pre-emptive measure, if you will.

Shell products, I believe are trustworthy. However, I am also veering towards Hyundai's coolant. The one that they use these days is pink in color. Confused!

Hyundai uses pink color coolant in their cars since BS6. Green color is phased out long back and blue color is still available in some stores, service centers.

My suggestion is, drain the green coolant from radiator and coolant tank. Fill the whole system with just distilled water. Drive for 100 kms. Then drain the distilled water and fill the latest pink coolant either premix or 50-50 ratio of coolant and distilled water. The pink coolant is manufactured by multiple OE and Shell is one of them. Check this photo which is Hyundai coolant manufactured by Shell. Verify if the composition is same in the pink Shell coolant.



In my case, Hyundai service mixed my existing blue coolant with pink. I made them drain the whole blue-pink mixture, filled only distilled water and drove for 100 kms before draining and refilling with pink coolant.

Note- Do not mix green and pink coolant. It results in a slimy mixture with oil like coating in the coolant tank. Although, the Hyundai service centers say that all colors of coolant are mixable, do not.

[Joli]

Originally Posted by sagarpadaki

Hyundai uses pink color coolant in their cars since BS6. Green color is phased out long back and blue color is still available in some stores, service centers.

Yup, aware of this. The flush part is something that Hyundai service centres will not do for a coolant change as it is time consuming and labour costs are not commensurate with the time taken.

Which car do you have? How many litres were used? Did they charge you only Rs 301/litre? Mobis mentions the cost as Rs 364/litre. Thinking of getting this done directly at a Shell bunk. They have yellow and green colour coolants.

Originally Posted by hserus

Won’t make a difference in hot weather plains if you change at the schedule indicated.



Most coolants sold regardless of the colour are multi vehicle compatible. Check what coolant your car’s manual requires and use that specification of coolant, regardless of what colour it comes in.

Just an ethylene glycol-based coolant. That’s all is mentioned in the manual.

Originally Posted by 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?

Attachment 2603846

Attachment 2603847

I'm suspecting a faulty coolant from the factory.

What was the fault by the way? Did they replace the coolant under warranty (assuming the vehicle hasn’t run much)?

[abhi9044]

Originally Posted by Joli

What was the fault by the way? Did they replace the coolant under warranty (assuming the vehicle hasn’t run much)?

Nope, they didn't do anything. They were doing everything possible to deny warranty and to their luck, they were able to find another Nexon whose coolant colour had turned transparent. They convinced my friend that TATA uses two colours from factory, that are Blue and Transparent Yellowish.

Though of all the other cars that my friend checked at that time at the service centre (about 10+), he was only able to find 1 Nexon with discoloured coolant.

[sagarpadaki]

Originally Posted by Joli

Yup, aware of this. The flush part is something that Hyundai service centres will not do for a coolant change as it is time consuming and labour costs are not commensurate with the time taken.

Which car do you have? How many litres were used? Did they charge you only Rs 301/litre? Mobis mentions the cost as Rs 364/litre. Thinking of getting this done directly at a Shell bunk. They have yellow and green colour coolants.

It's a 2010 i20. 3 litres concentrate with 3 litres of distilled water was used.

Regarding labor costs, yes, it will take bit more time and money. But you will be sure that the right coolant is in the system and not a cocktail of green, pink or yellow color coolant.

[(Alok)]

Originally Posted by Joli

Just an ethylene glycol-based coolant. That’s all is mentioned in the manual.

No. not just ‘ethylene glycol-based coolant’ (never use a non-antifreeze coolant like sunstar, hella), beyond this there is phosphate based recommendation for Hyundai cars.

It is just like Maruti says strict no to ‘silicate’ Hyundai asks a phosphate must coolant.

Here is 2017 verna manual image


and 2024 verna manual image.


But a (big?) difference is there in recommended percentage of antifreeze. In 2017 antifreeze percentage as between 35-25% but in 2024 it 60-35%.

[Joli]

Finally, went for the Shell one. Did at their outlet so the labour charges weren’t applicable or should I say, were a part of the coolant cost. Took 4 litres of the premix. Cost was Rs 1516 in all.