If we have to use any products we use WURTH, but very rare we use any flushes and gas treatments. We wouldnt joint the Goodgarage Scheme main reason by using there treatments doesnt make you a better garage, use good Quality oils, parts and you cant go wrong. In the area where we are, we have lots of garages who have joined the scheme, which some of them you wouldnt take your vehicle to, so if we joined in the publics eye we would be classed the same as them. The standards have not been set very high apart from saying that there products are good.... So just because you belong to scheme doesn't make you a good garage