"What I'd like to see is an additive for my fuel tank that made the exhaust smell nicer. My car is precat and I'm getting increasingly concerned about the smell. I'm even considering an aftermarket catalytic designed for classic cars, no electronics.
Anyone had any experience of them?"
As a young and foolish motorcyclist I would regularly add a few drops of Castrol R to the fuel tank - made the exhaust smell good and made me feel great but probably not a good idea - I'm sure others here will have a view.
Peter H
