Radflush was one that did for the engine in my Citroen CX. TBF, there must have been issues already, as it had plain water for some time due to a leaking water pump. Plus I ;left it in a bit too long. Stick to the recommended time, or maybe a bit less, it's likely to have a different formula now as I had that 40 odd years ago. Start with plain water, see how it goes.
I don't think they've used caustic soda in these products, not even in the old days. Did they...?!
Yes in the past, mostly before aluminium cylinder heads etc.
Before aluminium ok...Yes in the past, mostly before aluminium cylinder heads etc.
Mainly because those things worked, it was just the side effects that were an issue.
I would just try a gentle back flush of the radiator to start with.
If you follow the instructions on the rad flush and only leave in for the minimum time recommended it should be OK.
Where they are a strong corrosive flush then more likely to cause damage if rad is weak.
I once saw a guy flush an old Ford Transit radiator, he left the flush in to long and the rusty core of the radiator gave up and water was leaking everywhere, you could argue the radiator was stuffed already.
I think the flushing agent was based on caustic soda, so unlikely to be in use these days.
Mannol is a well known company so their products should be fairly safe.
Thank you all,Mainly because those things worked, it was just the side effects that were an issue.
Mind you aluminium radiators these days, not the old brass ones.
Your mechanic is looking at the vehicle, so best person to judge.
Is it possible to do this without getting showered with antifreeze? Perhaps with vehicle on lift?
Well... isn't it exactly that situation, vehicle on lift, when you would actually get showered with antifreeze?!
With vehicle on lift, you can dodge as the hose comes away, but with vehicle on ground, axle stands etc, much less room to move quickly.
