4200 coolant change

maverick

Member
Messages
1,982
I decided to change my coolant as it got a bit cooked from my little over heating problem which has now been resolved .
This took about half an hour and a really easy job to do much to my amazement .
So on the advise from dave ball ( a independent who services my car ) here's how I did it .

1. Jack up front off car so you can get to the under tray.
2. Unbolt the under tray
3. Remove cover panel in engine bay above the coolant expansion bottle and release the cap.
4. Facing the front off the car at the bottom off the radiator on the right is a bleed screw , undo this with a bucket underneath .
5. Leave to drain into said bucket and go and have a cup of tea .
6. Once all the coolant has drained , tighten up the bleed screw , be very careful not to over tighten it .
7. Replace the under tray .
8. Lower the car to the ground
9.With your chosen anti freeze mix . 50/50 , Slowly poor into the expansion bottle . DO NOT RUSH THIS PART take your time , if you try and fill to quickly the air does not have time to bleed out of the return hose and this can cause trapped air in the system . You can actually hear if bubbling through .
10. Once the desired level is reached turn your fan speed switch to 1 and temp to max and switch the car on .
11. Check the level again. , I found it dropped straight away and top up .
12.Get the car up to temp check again and replace the cap and cover panel .
13. Give the car a day of normal driving and check the level again and top up if needed .
14. Job done
 

NickP

Member
Messages
1,623
Thanks, I was actually thinking of servicing mine this year, I've had it so long and the value is negligible. Also I have found through experience the only person I trust to do a thorough job is me. I've spent thousands with main dealers and indies only to find bits missed or being sold a line about how i must spend several thousands to get it through an MOT. I was going to take pictures of every job I did as I'm sure there isn't much to changing a cam belt or swapping out the plugs and posting them here. I have been meaning to do this for the last couple of years but always end up taking it in due to lack of time....
 

Gp79

Member
Messages
1,399
Don't forget the vents on the front of each bank, i bled a fair bit of air off here when I changed the coolant on mine.

It is so much better to do things yourself, it's done right and not rushed.
 

Trev Latter

Member
Messages
1,213
The other way of doing it if you have a compressor is with one of these

http://www.ebay.co.uk/itm/like/NEW-COOLING-SYSTEM-VACUUM-PURGE-REFILL-KIT-6PCS/371284877848?hlpht=true&ops=true&viphx=1&_trksid=p5197.c100068.m2280&_trkparms=ao%3D1%26asc%3D20140205155511%26meid%3Df9676f93267642dab4ed22c533529baa%26pid%3D100068%26clkid%3D4817876728538409821&_qi=RTM1793693

Used one many times in the workshop and makes the job so easy. You can't get an air lock because there's no air left in the system. It's also very easy to check for leaks too by simply observing the gauge.
 

Contigo

Sponsor
Messages
18,376
Not really but it sounds good! Tap water will do but for the purists amongst us using distilled water is soothing and keeps the conscience clear!