ORIGINAL: Frenchy
Farcela G3 and G10 (Different cutting compounds ) it is what the professional body shops use. now marketed for mortals ! use masking tape and water to prevent burning the paint, as Ed said once you are back to Red wax with a quality wax on a regular basis, Do Do Juice products are very good and British [

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Having won a number of events over the years in one form or another. I can only add to this..
Farcela is the best to use to restore a cars paint.
G3 being abit harsh but G6 is more widely used to restore old paint and then G10.
The trick I found to really detail the car is to use water. This then lubes the paste and burning becomes less of an issue. i also use a plant water spray bottle so as I am working the paint I can then lube as I go..
I also jet wash the car between pastes this gets rid of all the old paste in places you don't want it eg washer jets etc etc.
Then your free to move onto the next level
I use then a paste from the US p40 or some thing it's called the glaze is amazing and really works!
I do also use the Tox Wax from Farcela.
Also clay bar the car to remove alot of the rubbish on the paint at the G6 stage.
top up the car with top wax every few months and your be supprised.. Also don't use cheap mop heads. and wash them out it's the clogging of the paste that burns the paint!
and the proof in the talk
I was given this car by some one who gave up on it.. I needed a little run about so I took it on
before
4hrs later
The problem with the car was a £10 gearbox linkage that had broken and two local garages had told them it needed a new gear box!!!
I know it's not Porsche but it just is to show you what you can do with paint. Still runs great the car!