I’d consider Boeshield as well. It will dry, so I assume it will be cleaner to work on down the road than Fluid Film. Boeshield is the route I took on my frames the last couple years.
Protecting against exposure is one part of the puzzle, the other is limiting the time of exposure. Make sure you hit the car wash as soon as is reasonable after salt exposure. If you’re more DIY, grab a pressure washer (this one is very good for automotive cleaning, especially for the price, 20% off this month!) https://shop.activeproducts.com/collections/pressure-washers/products/active™-electric-pressure-washer-m22-16
And a rolling nozzle to flush all the nooks and crannies underneath. RIDGE WASHER Pressure Washer Undercarriage Cleaner, 16 Inch Undercarriage Washer, Pressure Washer Under Car Cleaner with Straight Extension Wand, 4000 PSI
https://a.co/d/bisxlxF
After doing Boeshield a couple years, I think I’m going to switch to Ammo Reflex Pro since I’m… OCD. It’s made to repel water dirt and salt. I’ve noticed that Boeshield will still retain dirt a little bit even though it has a dry finish.
Finally, if you have rusty spots already on the frame that you want to get ahead of before they grow, check out Eastwood Rust Encapsulator and Eastwood Chassis Black.
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