My sat nav disc wasn't working and had circular scuffs on it as though its been running against something for a long time.

Anyhow, I started by paying £2 at blockbuster video to have it polished. This worked fine at first but left some faint marks. On a recent run out, it kept faulting though so I had a go at it myself today. I started with a mild rubbing compound which removed the scuffs almost instantly. Then I brought the shine back with the posh equivalent of t cut (auto glym). It now works fine.

On reflection I probably don't need the rubbing compound and could have done it with the t cut.

Top tip, in case anyone else has a rough looking disc! My Previous RR's!
2018 P400e Autobiography
2008 TDV8 Vogue
2006 TD6 Vogue
2007 TDV8 Vogue
2007 RRS (I know, it doesn't count!)
2005 4.4 Vogue on LPG
2005 TD6 Vogue
2003 4.4 Vogue
2001 4.6 HSE
2000 2.5 DHSE
1999 4.6 HSE
1997 4.6 HSE on LPG
1995 2.5 DSE
1989 3.9 EFI classic
1988 3.5 EFI classic

Good to know that. Would have thought the data would have been wiped, wonder if it works with VD's 2021 L405 Vogue SE 4.4 V8 DIESEL ~ #17

^^^^ What T-cut on sexually transmitted disease's

Bloody iphone predictive text or i hit v instead of c with my fat thumbs - c & v next to each ! meant to be Cd's 2021 L405 Vogue SE 4.4 V8 DIESEL ~ #17

Yes, T-Cut or similar on CDs and DVDs is the age old remedy for removing scratches and marks. Because there is a film layer above the "burning"/data layer (especially on pressed discs) you would have to rub pretty hard to damage the data layer.

I have also used spit and the back of my jeans to clean up discs (usually after kids have had them for a while!) .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Graygates plastic polish available on Ebay. Fantastic stuff - used it in the RAF for cleaning and polishing aircraft screens (canopy etc) - would say nothing beats it Saved me a fortune on CD's , DVD's and Xbox games