Coolant replacement time - Engine, Tuning and Performance - uk-mkivs

Jump to content


Photo

Coolant replacement time


  • Please log in to reply
26 replies to this topic

#1 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 10 September 2020 - 06:38 PM

Hello

I want to know every how many years do you replace coolant in your IV ? 2 years or more ?




#2 Aaronb1985

Aaronb1985

    Just grazing

  • Full Members
  • PipPip
  • 806 posts
  • Lancing West Sussex
  • Golf IV V6 4motion 2.8 24v AUE 204PS

Posted 10 September 2020 - 06:44 PM

I do it every 2 years, just done it actually. £40odd from the dealership for the neat stuff and some de-ionised water from Halfords


Sent from my iPhone using Tapatalk

#3 used-to-own-a-vr6

used-to-own-a-vr6

    ??

  • Full Members
  • PipPipPip
  • 1167 posts
  • Golf V GTI 2.0 200PS

Posted 10 September 2020 - 08:46 PM

You should be able to go way more than 2 years. If it looks clean, and you test it then it should last a long time. I think I only changed it on my MK4 when the water pump was changed with the cambelt. Same for my Mk5.

Sig_zpslueag4vz.jpg

Mk2 Driver, Mk3 Driver, Mk3 VR6, Mk4 Gti, Mk5 Gti


#4 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 10 September 2020 - 09:36 PM

I had it changed when the car had done 115,000 miles. It was 12 years old by that time.

I would say If you're putting genuine VW stuff in, then it's fine for a very very long time. Certainly if change it now you'll not need to do it again for a very long time
  • used-to-own-a-vr6 likes this

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#5 mur3633

mur3633

    Just grazing

  • Full Members
  • PipPip
  • 187 posts
  • Podgorica, Montenegro
  • Golf IV GTTDI 1.9 AJM 115PS

Posted 11 September 2020 - 04:37 PM

Also G12+ is must. G13 if you want to be eco-friendly.
You don't have to buy OEM stuff. Febi, Swag, Meyle, Ravenol are as good, but much cheaper.


I would use Coolant flush additive before change, because you probably don't know what was tanked before you.

ChrisFix has very detailed tutorial on YouTube.

#6 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 11 September 2020 - 05:58 PM

Since I have my MK4 the fluid was changed two times. First because a leak and second time during timig belt, water pump etc. replacement. Now it is more than 2 years.

 

How to test fluid without special tools ? G13 is worse than G12+/evo?


Edited by locarno, 11 September 2020 - 06:00 PM.


#7 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 11 September 2020 - 06:00 PM


How to test fluid without special tools ?


What are you hoping to find from testing it ?

Mine went 12 years without a problem

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#8 used-to-own-a-vr6

used-to-own-a-vr6

    ??

  • Full Members
  • PipPipPip
  • 1167 posts
  • Golf V GTI 2.0 200PS

Posted 11 September 2020 - 06:04 PM

Since I have my MK4 the fluid was changed two times. First because a leak and second time during timig belt, water pump etc. replacement. Now it is more than 2 years.

How to test fluid without special tools ? G13 is worse than G12+/evo?


You can't really test without a tester. Just search for antifreeze tester. They are about £5.

Sig_zpslueag4vz.jpg

Mk2 Driver, Mk3 Driver, Mk3 VR6, Mk4 Gti, Mk5 Gti


#9 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 11 September 2020 - 06:05 PM

What are you hoping to find from testing it ?

Mine went 12 years without a problem

wait. 12 years without timing belt and water pump replacement? Or you just used old fluid during replacement.



#10 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 11 September 2020 - 06:34 PM

wait. 12 years without timing belt and water pump replacement? Or you just used old fluid during replacement.


12 years without changing coolant. Correct


I only changed it because the timing chain was being changed at the same time

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#11 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 12 September 2020 - 09:57 AM

I thought timing belt should be replaced in 4-5 years.

Anyway. Replace coolant with destiled water few times and then few times with normal coolant should be ok ?



#12 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 12 September 2020 - 10:10 AM

I thought timing belt should be replaced in 4-5 years.
Anyway. Replace coolant with destiled water few times and then few times with normal coolant should be ok ?


Correct timing belt every 4 5 years

My car has a timing chain, not a rubber belt, so it lasts for much longer , hence 12 years.

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#13 northpole

northpole

    More than a fleeting interest

  • Full Members
  • PipPipPipPipPip
  • 9766 posts
  • Suffolk
  • **-----**

Posted 12 September 2020 - 10:34 AM

 Replace coolant with destiled water few times and then few times with normal coolant should be ok ?

if you want to flush the system just use tap water... use a garden-hose... drain the coolant, put in garden-hose run water until filled, run engine for 5 minutes, drain water repeat until the water that comes out is as clear as what goes in... drain it when done, use some compressed air to blow out all the water,than fil it up with coolant... 

 

you can buy distilled water but it is expensive compared to tap water, and it won't do the system any harm if you make sure that you get it all out (compressed air will force it all out) and you'll have to do the same with distilled water anyways, or any other coolant flush... tip here is if the coolant is nice see through you don't need to flush the system as it is clean, if it is murky, non transparent, brown, rusty colour... than yes flush it. and if you do, do it the cheapest way possible ;) tap water!



#14 DerPanzerWagen

DerPanzerWagen

    Just grazing

  • Full Members
  • PipPip
  • 309 posts
  • Wales
  • Golf IV V6 4motion 2.8 24v BDE 204PS

Posted 12 September 2020 - 04:41 PM

By next week my coolant system will have had 3 changes in the past year. This is more than it's had in, well, ever.



#15 mur3633

mur3633

    Just grazing

  • Full Members
  • PipPip
  • 187 posts
  • Podgorica, Montenegro
  • Golf IV GTTDI 1.9 AJM 115PS

Posted 12 September 2020 - 11:23 PM

Difference between first, second and third flush from my car.
e5a4556a15a8741f5f67ef5730f4e406.jpg
Remove thermostat also to drain out everything. If you drain out only from radiator then you done half job only.
I also removed hoses from oil cooler, etc.

Where did you find that G13 is worse than G12+?

#16 DerPanzerWagen

DerPanzerWagen

    Just grazing

  • Full Members
  • PipPip
  • 309 posts
  • Wales
  • Golf IV V6 4motion 2.8 24v BDE 204PS

Posted 13 September 2020 - 03:32 AM

Where did you find that G13 is worse than G12+?

 

G12+ is ethylene-glycol based with additives (acidity regulators) but without silicates and phosphate in

G13 is ethylene-glycol based with silicate but is nitrate and phosphate free. 

 

You can mix the two together but G12+ provides less corrosion protection.


  • mur3633 likes this

#17 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 13 September 2020 - 12:08 PM

I don't know how it works in Mk4 but on my 1.9 B5.5 I removed coolant temp sensor and a lot of fluid drained out of the engine from coolant temp sensor hole.



#18 adam-

adam-

    VR6 GT35 4mo

  • Full Members
  • PipPipPipPipPipPip
  • 10711 posts
  • Glasgow
  • Golf IV GTI 1.8T 20v AUM 150PS

Posted 13 September 2020 - 03:49 PM

You weren't fast enough then.  Smash it home like you're full of coke and you've taken an Essex slag up the road.


facebook.com/adamforbes92, ig:@adam_g4fku, Adam's Anthracite Grey 1.8t Build Thread...

Best way to lose weight is not drinking mayonnaise/cheese/beer everyday.


#19 DerPanzerWagen

DerPanzerWagen

    Just grazing

  • Full Members
  • PipPip
  • 309 posts
  • Wales
  • Golf IV V6 4motion 2.8 24v BDE 204PS

Posted 13 September 2020 - 07:56 PM

You weren't fast enough then.  Smash it home like you're full of coke and you've taken an Essex slag up the road.

 

@locarno - You won't know what that means! 

 

So I tried to find you a pic but unfortunately, all the Essex slags are now married and look like mums and previous owners look like someone's dad... Just like in the vid below.

 


Edited by DerPanzerWagen, 13 September 2020 - 08:16 PM.


#20 locarno

locarno

    Just grazing

  • Full Members
  • PipPip
  • 594 posts
  • Poland
  • Golf IV 1.6 16v SE AUS

Posted 15 September 2020 - 06:17 PM

VW official service have special tools for coolant replacement. They use this to drain out whole coolant.

 

9966932500_1600193871.jpg



#21 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 15 September 2020 - 09:50 PM

How can you drain the entire system from the top / reservoir ?!

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#22 northpole

northpole

    More than a fleeting interest

  • Full Members
  • PipPipPipPipPip
  • 9766 posts
  • Suffolk
  • **-----**

Posted 16 September 2020 - 06:58 AM

it works of vacuum and pressure...  and it gets every drop out.

@locarno you want to have that? you'll need to buy an air-compressor with at least a 300 litre air-tank as that thing requires a constant pressure to actually do the job in one go... it's safe to say, you don't need it to drain all the fluids out especially not if you just want to replace your coolant.. 



#23 yurtesen

yurtesen

    Padawan

  • Full Members
  • PipPipPip
  • 1145 posts
  • Finland
  • Golf IV 1.6 16v BCB 105PS

Posted 16 September 2020 - 08:41 PM

@locarno coolant is forever if you use G12 or better. Unless it is contaminated which would mean that you have bigger problems. You won't be able to solve them by changing coolant.

Read:

https://www.ecstunin...lant/g12e100m2/

"Lilac OE lifetime coolant"

 

Didn't you have 1.6 engine? There is no belt change interval for 1.6 engine. You just check it regularly for damage....

https://www.continen...t-intervals.pdf

According to VW they last up to 360k km

https://www.volkswag...tzer/teile.html

(see FAQs section)



#24 Gti Fly

Gti Fly

    I live here

  • Full Members
  • PipPipPipPipPipPip
  • 10516 posts
  • Golf IV R32 3.2 240PS

Posted 16 September 2020 - 09:49 PM

it works of vacuum and pressure... and it gets every drop out.
@locarno you want to have that? you'll need to buy an air-compressor with at least a 300 litre air-tank as that thing requires a constant pressure to actually do the job in one go... it's safe to say, you don't need it to drain all the fluids out especially not if you just want to replace your coolant..



How can it work to get the water out of the block if it's locked in via the thermostat ?

<a href="https://uk-mkivs.net/...d-0-60-569secs/">Click for pics of my car</a>
Shoulda got a 150 tdi - everyone knows they are best..

 


#25 northpole

northpole

    More than a fleeting interest

  • Full Members
  • PipPipPipPipPip
  • 9766 posts
  • Suffolk
  • **-----**

Posted 17 September 2020 - 06:43 AM

it's done when the engine is at working temp and the coolant is hot... they than slowly open the reservoir to let the pressure come out controlled than they put it on... thermostat is open so everything comes out, the picture locarno put up is the one where they pressure fill the system... this takes away the need to bleed it and yes it is done right after the system has just been emptied so the thermostat is still open...  trust me opening the coolant expansion bottle when hot is a hazard especially if there is air trapped in the system...  

 

now without that gadget you'll have to deal with it like we all do and that is with cold coolant... 


  • locarno likes this

#26 Karim

Karim

    Just grazing

  • Full Members
  • PipPip
  • 855 posts
  • London
  • Golf IV 1.6 16v BCB 105PS

Posted 17 September 2020 - 03:22 PM

I dont actively change it, but I get the timing belt every 5 years, thermostat goes bad every 4 years or so. Did radiator change once. So it gets changed by the mechanic enough times for me to not bother with the change.



#27 northpole

northpole

    More than a fleeting interest

  • Full Members
  • PipPipPipPipPip
  • 9766 posts
  • Suffolk
  • **-----**

Posted 17 September 2020 - 07:17 PM

I actually only change it when it changes from see through to some murky looking stuff...  as long as i can see through it i leave it be... one difference with most people i don't buy the stuff that needs mixing i buy the premixed and fill it up... meaning it's always good enough to withstand summer and winter times how we get it here and even abroad in colder countries (it should the protection of the stuff i buy goes down to minus -36 Celsius)  Oh and i always have a bottle of premix in the boot just in case i need to top up because of an emergency...   







uk-mkivs.net is an independent Volkswagen enthusiast website owned and operated by VerticalScope Inc. Content on uk-mkivs.net is generated by its users. uk-mkivs.net is not in any way affiliated with Volkswagen AG.