Windscreen

[Seadog]

Pickering's Blanco

 

[winchman]

I use Bar Keepers friend basically its Oxalic acid so a good cleaner / degreaser
About £2.50 in Home and bargain
https://en.wikipedia.org/wiki/Bar_Keepers_Friend

 

[brightspark]

jewellers rouge u can buy a kit from Halfords to fit in electric drill to apply the stuff and buff scratch out

 

[8ob]

We get the odd pipe let go on a machine which normally results in the screen getting hit with hydraulic oil , a wipe down with brake cleaner followed by soapy water and a good rinse seems to do the trick.

Bob