AIDY
Active member
which is finer 
g3 is good to cut the gel back where it has oxidised. it works very well, I use it with an electric machine, low revving, then the quick wax by farecla.
I did notice last night that Farecla do a liquid compound that will, they claim, remove the oxidisation and leave a high gloss finish....I spoke of it in a thread last night....
Just to extend this slightly. I've used G3 a couple of times on my hull. Does anyone have a feel for how many times it's safe to use? Presumably its reducing the thickness of the gel each time. My hull is now 30+ years old and I don't want to start seeing the glass fibres starting to show through.