SQRRRL
SILVER Star
Search NH Oil. It’s a thin oil product that is similar to fluid film ( no smell). It’s professionally applied to prevent rust on frame, axles, inside doors, hood & tail gate.Edit: NVM google says it’s literally a brand of undercoating product, my bad!
If you don’t mind me asking, what’s NH oil? In the last decade we’ve started using Calcium Chloride in Alaska (even as a dust palliative in the summer) it’s really taking a toll on undercarriages!
We use magnesium chloride. It’s terrible for my car(s). I found a product called Salt Gone as well. You hook to garden hose. Not sure how good it can be applied under your rig but it’s great on paint.
Time will tell.