wanna flush the entire coolant system and put fresh coolant in my car, should I go to aircond shop or just any car workshop? any recommendation in setapak area?

This post has been edited by deejay_krish: Dec 7 2025, 10:25 PM

Coolant flush just go to car workshop.

you have money to buy and change flush but no money for service meh...
go to those you know might be a good start
else, if failed, you got to push your car to workshop

??

do honda or toyota service got help to flushing the coolant? or need to send outside to do?

my car 4 year already...

Flushing the entire cooling system once a year keeps cooling system optimum and less rusty in radiator and engine. Many workshops including service centers, service time they only take out the old coolant and put new coolant, they dont do proper flushing with water before adding new coolant. This is why when you open radiator cap after few days of service, you can see rusty water even though new coolant inside

Always remember, when changing coolant time, insist on flushing before replace new coolant.

This post has been edited by deejay_krish: Dec 8 2025, 08:41 AM

You don't know how to call the service centre?

dude, please save the kopitiam kinda replies here. He doesnt know, thus he asks for some info here. Not everyone is a car mechanic. Please at least be a bit serious in replies when replying in here.

Most car workshop use tap water with all sorts or mineral deposit+concentrate coolant which can result rusty water if engine block are cast iron type especially IAT type very reactive

You want best results use OAT type concentrate coolant+distilled water still rusty but not reactive like IAT

If want easy and money not a problem can use those premixed 20%/50% coolant just drain , fill then start engine until thermostat open, stop engine, let it cool and safe to open and drain and repeat the process until the coolant is fully flush

Those premixed reputable brand each bottle 2 liter RM 17 to RM 28 per bottle if radiator and engine together if need 12 liter in total you need 6 to 8 bottle or those come in 4 liter variant

And distilled water the price ain't cheap either for 5 liter if just using for flushing purpose so is viable just all the way using premixed to flush and fill i think is much more easier if money not a problem unless you want use concentrate coolant then using distilled water to flush and fill is a proper way from personal DIY opinion distilled water flushing cheaper but if you drain not enough and some leftovers on engine block which can result uneven coolant from premix coolant with distilled water.

Try buy at official or SC because coolant also got fake punya

If you know what I'm talking about 😂

This post has been edited by zuozi: Dec 8 2025, 09:17 AM

actually for flushing, you can still normal water or mineral water as the water is not gonna stay inside. even tap water also can, because ure already flushing it out. Once fully clean and can see clear water, you can then add the premix coolant. Nowadays coolant comes premix, no need to add water. Once premix added, it will be full of coolant already and we dont have to worry about the earlier water we used to flush anymore as its already replaced with coolant now. This step works all the time

This post has been edited by deejay_krish: Dec 8 2025, 09:32 AM

Oh ya forgot to say those premix or concentrate coolant if oat type usually is long life coolant, usually 5 year or 150k/250k km one change can last very long as long you don't go and fill your coolant with tap water can result shorter lifespan become faster rusty what ish look like.

This post has been edited by zuozi: Dec 8 2025, 09:36 AM

Tap water carry many deposit from Rusty pipe and all sorts or organic thing that the reason tap water is not recommend can also become faster Rusty if engine block are cast iron type if any remaining residue u put in premix coolant and leftovers tap water on engine block can result uneven coolant ratio mix

This post has been edited by zuozi: Dec 8 2025, 09:41 AM

My answer is not serious enough?

First, no one know where he/she lives.

Second, I did before doesn't mean that the service is still available. Calling to the service centre to ask is the best option here.

Stop being oversensitive.

u see rust = damage ady done. no reverse back

contamination maa. but nvm so u can diy flush frequently.

Any workshop can do the coolant flushing 😆🐝🐞👍