Keeping your engine black and clean, I think I've found a cheap hack.

[Batkwaka]

A clothes peg, paper towels, WD40 and elbow grease is how I clean the engine and fins. I don't mind using Armorall but I'm not the one that'll be repainting the bike.

[grog]

These are cheap as, last around 12 months, work so well with a bit of truckwash, hose off, let dry, apply S100, which now will be Hardly engine brightener. https://www.ebay.com.au/itm/403883509860?itmmeta=01HX94T4MHFQM5VBWEH1KCAMNX&hash=item5e09554864:g:UdwAAOSwfCdjIEOp&itmprp=enc%3AAQAJAAAA8Aww6ast%2BnWAbNMIKrxYvADNfsdcvcj9rsrItLXlKa%2Bd%2FFIJOyhFbgix0SLNcDDt4IZD26h4X5NkZXu8siGuqbGm8a3rMXQhHEPHCQ%2BfdoFKaCqdj%2FJ1OZ9HIin7jlWofAWnra1v%2BbOxcSmFWuD%2FHSP05FcKMzf4bp3KnDsFQGIoUCZKJzySxan0sSrD1SiEP6Nji%2FTA5xTtsIHS0xzM8K5%2BaToKK5Wc4f7GKOybOOl9ajO%2FRLO22H%2BJiE73OyMjSFnwvVaNTqkr2GJI0pWGX%2FZWYq1kxTIQUEhTslLxfv4OQZvUxB7UCHUW7GzuSWUVtA%3D%3D%7Ctkp%3ABk9SR6zK6KTqYw