14. Trim
Prevent seals in doors, boots and hatches from drying out and cracking by smearing with a lubricant, such as Autoglym’s Vinyl & Rubber Care (£5.99).
It will also help stop doors freezing shut in extreme weather.
Plus, it’s a good idea to clean, then grease, hinges, locks and stays to ensure they move freely. Check cabrio hoods for cracks and treat with a sealant.
