MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: blingsta on March 13, 2023, 01:25:30 am

Title: coolant flush
Post by: blingsta on March 13, 2023, 01:25:30 am

hi all

i want to do a coolant flush...  whats best way? - rad bottom hose or the aux water pump near the sump?

https://www.myfastgti.com/threads/coolant-flush-diy.17420/

would the aux water pump be ok to flush from?

Title: Re: coolant flush
Post by: GVK on March 13, 2023, 07:40:51 pm

Can't see a problem doing it from aux pump

Title: Re: coolant flush
Post by: blingsta on March 13, 2023, 11:00:59 pm

Would that empty the whole system?  Is it the same as doing it from rad bottom hose?

Title: Re: coolant flush
Post by: GVK on March 14, 2023, 08:04:39 pm

It's as low a point in the coolant system so can't see a problem in doing it from there - probably easier than getting the bottom hose off.

Title: Re: coolant flush
Post by: blingsta on March 15, 2023, 11:47:37 am

Yes it is  :signLOL:

i'll try it and see what happens  :happy2:

thanks for reply

Title: Re: coolant flush
Post by: blingsta on March 24, 2023, 02:16:43 pm

Just a quick update .

i managed to flush the cooling system from the lowest part - (aux pump) which was sooooo much easier than getting that rad bottom hose off !!  :partywave:

anyways..   all flushed n cleeeean now  :jumpmove:

Title: Re: coolant flush
Post by: Valztattmk5 on January 02, 2024, 05:01:52 pm

Hey ! Just done a coolant change on mk5 1.9 tdi, undone the bottom rad hose and maybe 2/3 litres off old coolant came out , I was expecting 8 litres ? I’m guessing that’s not a complete flush then and the remaining 5 ish litres would be sitting in the engine??? Any help would be much appreciated