^turtle presoak three brushes and alot of stamina is all it takes, but you can do some rough cleaning with a bottle of petrol too, and a little bit of formula 1 dash spray costs around 200 will shine and blacken the plastic, thats what i sprayed on the headlamps when u came over.
firstly get the engine bay sprayed with petrol to remove the loose dirt and grease and get radiator area sprayed with water (avoiding wiring as much as possible), this is optional but will save you alot of elbow grease,
then get a bottle containing presoak or petrol por a small amount on a small portion and start rubbing with the brush, do all the portions like this. in some places the tooth brush wont reach the grime so improvise or use some baby bottle brushes if u can find any, after u have removed it all put some car wax (polish in desi terms) on the painted parts and some formula spray on the plastic.
