This is the best stuff I have ever used - Bilt Hamber. I use UB on outer panels, UC (which is softer) inside things like bumpers, and for temporarily coating things over winter, and Dynax S50 inside cavities. Much easier to apply than Waxoyl. I also use Ferrosol rather than WD40 or similar - it can also be used as a pre-treatment before the underbody coatings, and helps it penetrate into seams etc.
Their waxes, polishes, clays etc etc are all also excellent. I previously used Meguiars and similar, but tried their Auto Balm on a slightly faded red car and the results were really impressive.
No connection with the company other than a satisfied customer for over 10 years.
https://bilthamber.com/product-category/anti-corrosion/
