There is a road I use daily and today I nearly overshot the junction.
seriously?? cos of the oil flush??? hahaha
In addition the treatment aids the engine’s longevity.
nothing too certain there either...
a regular service will keep things ticking over just fine, dont waste your money on anything like this. Use the engine flush in a tin if you feel you would like to do something but typically the people who do this kind of thing are the people who dont need to ;-)