hrm. when i open and see it is red color. then i see honda type 2 coolant is blue one. i also nt sure is it the coolant will change color when hot/cold down?

No le.. Mine has been blue ever since. I also bought the pre mix twice from Honda SC which is blue colour. They told me is for my Honda city. i top up from time to time.

This post has been edited by lil_flank: Oct 30 2018, 12:12 PM

then my one is not using ori honda coolant when sc servicing. is that possible? so i not dare to add any coolant now. can i just add some normal water for it(radiator) now?
tonight i will check again the color

This post has been edited by ycgoh123: Oct 30 2018, 12:21 PM

Go to the nearest Honda SC if you're free and just ask them to check it and top up a little for you.

I tried before. Went to SC in the late afternoon as i found out my coolant level was low and i needed to drive to Penang the next day. They helped me to top up a little without charge, albeit the coolant was slightly diluted (as it was leftovers of coolant that they used for the day).

Working day not able to go SC. And I going Genting again on this Friday 😂 I guess I will just buy distilled water to add it first. Hope it is ok

toyota long life coolant is red, honda coolant is blue. mine also blue. try to use premix coolant better than distilled water, but it's still acceptable la. maybe go car parts shop and buy a honda genuine premix coolant..

the honda genuine premix coolant you mean is type 2 right? it is blue color. i think use distilled water better than mixed 2 coolant maybe
is it possible honda add toyota coolant for me at their service center?

This post has been edited by ycgoh123: Oct 30 2018, 01:40 PM

I doubt it's literally 100% deionised. Nevertheless I'd still use it over tap water. How much coolant do you lose, over what period of time?
So far, none of my previous cars had needed coolant top up, since very little water is lost from evaporation at expansion tank.

Honda has two types of coolants, aptly named :
Type 1 which is red
Type 2 which is blue.

Iirc, type 1 requires dilution with distilled water, whereas type 2 is pre-mixed type. This is so that users don't screw up their cooling system by adding tap water during coolant change.

The issue is when we lose coolant without leakage, as in the case of our City. I can assume it's lost through evaporation from expansion tank, which means if we add Type 2 coolant, as suggested, will it not cause an increase in concentration? Perhaps the top up rate is too low (compared to the whole coolant inventory) to make any significant difference.

Maybe Honda coolant like pre-FL temp gauge, blue when cold and red when hot.

gg then haha.
still wonder why my one is red lol

Mine do decrease over time. Now mine is already in the middle in between the allowable range. The one i bought is already pre mix so i think it safe to top up. This is according to the SA la. The reason i use the pre mix is because i am afraid of corrosion build up. Some SC just use tap water to top up.

If you’re familiar with PC water cooling, they don’t recommend to use deionised water on rads.
The water will pull ions from the aluminum fins of the rad causing corrosion. Didn’t try out that theory though.

Anyone experiencing driver seat feels kinda loose and slightly bouncing up when drive over bump in slightly higher speed?
Is seat under warranty?

No no. Just asking because curious. So far no problem with water loss yet. But I am also thinking what if the lower level is due to water evaporation so we should only topup with water when the level goes down. Topping with coolant will only increase the antifreeze concentration which is bad for heat exchange efficiency.

Just top up with normal tap water will do. Even if you top up to full in the expansion tank, there is always an overflow tube to let the extra water escape in the event of overflow.

Although if you study in-depth automotive cooling system, book will tell you only put "distilled water" into radiator due to those mineral in water will make your radiator and water passage become rusty. But in my opinion that is abit too much. SC in malaysia, even conti brand will just top up coolant level using tap water.

Hmm... is City engine aluminium or steel?

problem solved.

This post has been edited by ycgoh123: Nov 1 2018, 04:51 PM

As i understand, battery water is distilled/de-ionised water. So by right this is the best water for use in radiator.

In theory, yes it is the best but in reality, not necessary.

The antifreeze additive is there to prevent corrosion in your cooling system.

The best result of course is to use FULLY manufacturer specified pre-mixed coolant.

Bro. Is there any possibility that the sound was from the doors? You try to swing on the back passenger door especially the back left & listen carefully to see whether the sound appeared?