rather than just adding a glossy layer on top

fibre glass

Apply with a filling knife and smooth off immediately with a wet blade

Wynns Diesel Particulate Filter Regenerator

Anti-static and anti-silicone panel wipe

Shell Helix Ultra Synthetic Motor Oil 5W-40 5L Adblue rather than just adding aShell Helix Ultra Synthetic Motor Oil 5W 40 5L Shell Helix Ultra uses unique active cleansing technology to help high performance engines operate at maximum efficiency by helping to protect them from power robbing deposits and wear. It is suitable for even the longest OEM recommended drain intervals. Shell Helix Ultra's fully synthetic formulation offers Shell's maximum protection in very hot and extremely cold climates, and severe driving conditions.