Can you clean the Coolant expansion tank

completed this mk4 tank conversion today.
with a few new clips, hose and g12+, it came in at under 25!
the brackett had to be modified slightly, but it looks 10x better. even managed to hide the overfill hose

 

dont't let the temperature get aabove 37-40 - using temperatures above this will denature the enzymes and they serve no purpose so if they have some kind of action here don't let it get above that temp (Same goes for your washing by the way!)

I vote for non-bio - less likely to give you itchy skin too lol

Are there aftermarket ones of these in stainless say with a glass viewing window for levels like in a kettle or is the fact that it is pressurised when coolant warms a problem?

 

I've got the Mk4 tank fitted to my track car, it's not a direct fit as the Mk4 tank has a round section sticking out of the bottom to help support it rather than the rectangular one on the Mk2 tank that slots into the bracket. You can cut a round hole into the Mk2 bracket and it should fit ok. If you have an Eibach strut brace it will cause clearance issues so a new bracket was made to move the tank back and down a bit.





I'd previously trimmed the wires to the tank sensor when i rewired my car so i needed to extend them. VW sell wires with the correct terminals already crimped on:





It looks good when fitted and the overflow hose can be re-routed neatly round the side rather than over the gearbox

 

good bracket you made there. bet you could knock a few of them up for sale. got all the plugs/connectors too. from vw and local electricians

 

i think there welded. late ones are anyway. kind find them on etka. RJ, over to you....

 

the new tank bolted straight onto my jetta which uses a Mk3 Golf bracket, no mods req

 

Caustic Soda BUT be very carefull.

 

is there a better volume of water in the mk4 bottle?

 

i think they do, as there hollow. the mk2 ones have a sort of chamber inside, and the water gathers up the sides. plus, there nice and clean

 

I ran my washer and water bottle through the washing machine last night with rice, bycarb in pillow cases and washing powder, wirked a treat, not perfect but a hell of a lot better