We too are forte users and they are trying to persuade us to join! see their website www.goodgaragescheme.com . Forte are out to sell their product of course, but they have over the past 20 years or so? we have known them have consistently sort to promote good garage practices and give back up to garages.They are a genuine company(we have known our rep for years now) that believe in its product and from our experience of use, they are of benefit.Forte sees that by encouraging the raising of standards in garages and helping promote such, they can sell more of their product.Which is not a bad thing for both sides.But as has been said use of thier products on a regular basis, as the argue should be used,can soon add up on customers bills. We use Engine Flush on all services but to include other, allbeit benefitical additives we struggle to justify the extra cost especially, when as we do, you work on 3yrs+ older cars, that often at service require additional work( eg brakes etc)which puts service cost up for owner anyway.Still worth looking at and trying out. But see
my post above on trading standards new initative.