Wynn's Radiator Flush - Acid-Free Dual Action Formula Removes Rust, Scale, Oil & Deposits - Compatible with All Coolants including OAT - Safe for Rubber Hoses & Metal Parts - 325ml

Good quality

Cleared a load of gunk out after use. Unsure of how effective it was, but for the price it’s worth using it every time you flush the coolant

This flushed through the engine and made her purr like a kitten ..

Whether it's snake oil or not, I don't know, but no harm in using these things every now and again just in case.

This does exactly what it says , sort my Smart car out totally will always be using this in the future 😎😎😎

GREAT THANK YOU SO MUCH DEFINITELY RECOMMEND

Bought this one as its a well known brand and for use in my 1968 classic., so didnt want an unknown cheaper product in the car. Enough for 12 litres capacity so have some left for another time. Seems to have cleared a lot of brownness in the radiator

Seems decent enough. Put the whole lot into a 4.9l capacity Corsa and ran for 30mins with the heaters on full blast three times to ensure a deep and thorough clean. Ran 16litres of water through the rad after and then three more ten minute sessions to rinse through the block. Still slightly soapy and I'll give it one more "hot" rinse before refilling the rad with a little over 2l concentrated antifreeze. Hope I'm doing this right as never done before!