Never used these products before, are they worth it

[Andy Clap]

If you have a car with noisy hydraulic tappets, Wynn's Engine Flush will work wonders.  My old 74,000 mile Kia was making such a metallic racket that people would stare at me in traffic queues.


Stuck in a tin of this, fast revved for 15 minutes then dropped the oil; problem cured.


Wouldn't use it on a perfectly serviceable bike though.