Get a can of ACF50.It's the Dog's Danglies.I sometimes can snaffle a can on Aircraft facilities I've worked on but it still doesn't work out expensive if shop-bought as it lasts a long time.
http://www.acf-50.co.uk/motorcycle.htm
https://www.ebay.co.uk/itm/ACF-50-An....c100505.m3226
My local Motorcycle shops now carry it.I also use it on my Rad hoses as it prevents them drying out and decaying and also on their clips etc.