Coolant expansion bottle

Doing my coolant change and noticed my expansion tank was stained green making it hard to see the coolant level in there

I took it off to try clean it out but only using boiling water and it now like this


The rest don't seem to want to come out, spent bout 2 hours trying to get it cleaner... Anyone know anything that would clear it out?

 

it was the same for me a few months ago when I changed to the Evans waterless coolant. Just persevere with some cut up cloth and the end of a screw driver etc.. lots of hot water & soapy bubbles

 

Yeah as Gilesy said something in there to break the crud off the bottle sure i used some mr muscle or something left in there for the night or barrys love juice that bang stuff cilet ?

 

2 part holt rad cleaner will clean that reet up. Might as well run it through the rad too!

 

One of these?



Or failing that a flexible scrubbing brush like you get for kitchens. Would try a few goes of leaving it soaking with washing up liquid and boiling water, and scrubbing between each go. If that failed I would try going down a more stringent chemical route, or just say sod it and keep an eye on fleabay for a 2nd hand one.

 

I did use holt rad flush, didn't leave it in the bottle long tho

 

Cheers, I do have a blow torch also a roofing gas gun that would sort it right out but that didn't cross my mind lol!

Due to the angle of filler part I didn't want to risk pokin stuff in there and it getting stuck, il try more hot water and some bleach, I have some really powerful mould cleaner I use at work which is bleach based so may try that later too

 

All done with a little bit of mould spray and some more boiling water

 

Happy with that

 

Looks good, another old trick is a handful of pebbles or marbles, use to be good for rusty fuel tanks too

 

Argh didn't think about that.. Cheers il keep that in mind, just hope iv bled all the air out the system, I did it by the Haynes manual

 

I find best way is on the side stand, then run as long as poss with cap off, blip the throttle three or four times, cap back on before things expand and get too hot, run feeling hoses for temp, shut down and cool, check level and blip again on another warm up session. Should be ok.

 

Il try that tomorrow aswell just to make sure it's all out, seemed to be holding it's temp ok at around 85-87
Cheers

 

Sounds like you've done it nice job looks great now all clean