Coolant system flush chemicals?

[Mark Serj]

Hi all,

Can anyone advise on use of coolant flush products and their worth please?

regards


Mark

[jbuckl]

Be prepared to fix things that leak after using these types of products on old engines.

[Mister G]

Tap water, delivered via a garden hose.
Reverse the direction of flow thro the Rad, take the plugs out of the block and be prepared to get wet....
John

[Seaking]

A fellow stag owner and plumber system engineer told me You can use a central heating chemical flush as it is safe with all types of metals think of the different types of metals in a boiler.

Cheers Glenn

[Ziptie_Engineer]

I use the Holt 3 part kit on my MX5 (no coolant changes in 14 years!) when I switched anti-freeze types; I was pretty skeptical of how effective it would be. I fully-flushed the system will hose water and got a little bit of gunk out. I then used the Holt stuff and the next load of water I flushed was really manky! So clearly these kits do something on more modern engines. Although, if you're Stag isn't suffering cooling problems I wouldn't bother, just a good flush and coolant change.

[Stagsongas]

The best stuff I have ever used is exactly that, the three-part powder Holts 'Radflush' that came in a box.

Quite hard to find, don't be seduced by things in a bottle that claim to be similar, follow the instructions to the letter and you may be surprised what comes out. You might even be able to build an early sandcastle.

Regards

Steve

[Dieter H. Marschall]

Hello, I used a cleaner, which is used for coffee machines. It contains inhibitors making sure that rubber and plastic are saved.
Good luck, Dieter.

[Stagnant]

I just used the garden hose method, reverse flush as Mister G above. Drain plugs and thermostat removed. A fair bit of dirty water came out and I think it runs a touch cooler now.

Mark

[len]

I too have only used a garden hose, it takes a while to get clean water . One thing did surprise me was just shortly after i flushed it through ,the head gasket failed obviously not connected but when i took the heads off i flushed it through again by pushing the hose down the water jacket and the bits that came out amazed me , it took a fair while to clean out. and im on a water meter !
Len