Forte Stop Leak may be excellent - if only it was obtainable. The UK importers will ONLY supply it to their 'authorised agents' for them to use in their workshops. They refuse to supply the motor trade in general.myglaren wrote:Until you get the chance to change the matrix, try a bottle of Forte Cooling System Stop Leak.
It is fairly expensive but if anything will work then this will, it will also not cause any other problems that other makes of sealant will do.
The nearest authorised agent to me is a small independent of unknown reputation, some 50 miles away in a remote rural location - a 100 mile round trip to pay someone unknown to change the coolant and add a bottle of expensive goo - instead of a 50 yard trip to 'my' workshop either to do the job myself (or have my tame mechanic do it) with a thorough flush of the cooling system before re-filling with the correct 50:50 mix of (long-life) antifreeze and (distilled) water plus a the bottle of magic goo. A no-brainer.