New trailer salt corrosion.

I've purchased a 2018 Jayco that was brought down from Indiana while the entire east coast was under heavy snow. It clearly took on heavy salt build up along the way. Although it was been washed several times. I have lots of scews/bolts that have already broke. Most are still white with salt damage. I've already replaced the fuel station nozzle and switch due to the salt locking it up. Yes it was under warranty but only cost me $30 and was cheaper than taking it back. All this before making the first payment.

I've been around the block enough I know my dealer won't/can't do much about it but is there anything I can spray down there to slow down the damage ? The camper is great but the underside looks worse than the 4 year old Jayco I just sold.

Lesson learned, I'll never buy new in the winter again.