... I also question how well the product would work with the typical MGF gasket track failure where the failure isn't just a pinhole but a detached section of gasket
... I've now used steel seal on 3 cars for people and Its worked every time.
Supercover has been nominated for the Nobel Peace Prize.
Social hand grenades don't exist.
... I also question how well the product would work with the typical MGF gasket track failure where the failure isn't just a pinhole but a detached section of gasket
What that gasket failure shows is a failure over 10mm long. Sure, under the compression of the head it is only a few thou thick but that is a lot of area for a chemical repair. It's not just a pinhole, and it's not in an all metal assembly which doesn't expand and contract at different rates every time the engine runs.The photo of the detached section of gasket is slightly misleading, whilst bolted in situ the first signs of this would be a tiny gap which if filled would stop it it detaching.
There are cases where these products will not solve the the problem, but as witnessed by the testimony of the other T-Bar members there are many occasions where it has worked.
Typically I would try and look for signs of coolant staining and leakage. But I would need to access the engine bay for that and, as we all know, that is a mission in itself. I would check the coolant reservoir but if the seller were out to dupe me then it's likely that they've cleaned up, flushed and refilled with the good stuff. Temperatures should be checked. Again, we all know the notoriety of the MG gauges. So, there's no guarantees there. I'd dig around looking for 'mayo' signs in the oil. Perfectly clean oil and coolant might be a sign of a well maintained vehicle or a camouflage job.Just as a matter of interest , how would you know if it has been used in a car you wanted to buy?