The coolant reservoir on my Passat was disgusting from sediment in the system. How in the heck that got there is a mystery but old coolant may have been to blame for that. It left me with an ugly stained reservoir that had me worried for a minute some muggle may have added an incompatible coolant. Turns out it was just sediment and stains. I removed the reservoir from the car, poured in some muriatic acid sloshed it around in there careful not to spill it out the two openings and on me. Then I added some water and shook it some more, then flushed it all out. It is not brand new but it looks a lot better than it did. A word of caution, muriatic acid is strong stuff and can horribly burn you or blind you. Also the fumes are awful so use it outside and watch out for those fumes, they can burn your lungs if you inhale them. Muriatic acid is hydrochloric acid and you should use the stuff away from anything you don't want to damage. This WILL damage your garage floor or any other surface *permanently* . It might not harm some plastics (comes in a plastic jug).
Hi there Ad one hand full of fine rivier sand Mix wirh harpick and two cups of water Put in bottel Close inlet with hand Shake well if still dirty repeat It will come glean
Bro. Next time use gloves. That is NOT good for your hands. You can end up with a horrible lifelong case of contact dermatitis. Don't ask how I know. Sigh. BUt good video otherwise.
I would not run any nasty gunk through it that was not made for it. The only reason I was able to clean my reservoir safely with acid is I had it off the car. You would not want that stuff lingering in the heater cores or anything, it could cause a nasty leak. In the case of the heater core, that can be a huge and expensive job to do on most cars because of the dashboard. To clean the cooling system, I would just run water through until I am happy with the results. Then you will want to get all that tap water our or as much as you can for 50/50 coolant mixed with *distilled* water. Tap water, especially mine is full of rust and other minerals and it slowly stains things. The chemicals to dissolve those stains are very unpleasant too.
Not for an OEM bottle, they go for upwards of $70 or more.... cleaning the cooling system and it’s reservoir should be part of routine maintenance, maybe he just got the vehicle and is restoring it, idk but to me it’s worth it.
For demonstration purposes is what I was thinking I mean as long as it shows it works he had a dirty reservoir what does it matter now it's clean !! Good job 👏
![How to CLEAN RADIATOR COOLANT tank [Easy Method]](/img/logo.svg){kind=logo}
