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The product

FLUID FILM® vs Corrosion Free, plainly

Most rust-proofing shops around here run one or the other. We run FLUID FILM®, and rather than tell you the other one is bad — it is not — here is what actually differs, so you can decide on the vehicle you own and the winters it sees.

The shop is at 2498 Lapeer Rd, Port Huron, MI, 48060 — one bay, one address. 7 days · 9 AM – 10 PM, by appointment only, with a key drop box for drop-off.

FLUID FILM® is a wool-wax film
LanolinFLUID FILM® is a wool-wax film
keeps creeping into seams
Never setskeeps creeping into seams
no stripping first
Over rustno stripping first
both are reapplied yearly
Annualboth are reapplied yearly

What each one is

FLUID FILM® is a lanolin-based film — refined wool wax and corrosion inhibitors — that goes on wet and stays that way. It does not cure; it creeps. Corrosion Free is a thin-film, dripless product that dries to a clear coating with a corrosion inhibitor in it. Both are sprayed into the same places, both are reapplied annually, and both are a great deal better than nothing.

Why we chose the one that never hardens

Salt does its work in the seams and box sections, not on the open flat surfaces. A product that keeps moving keeps finding those seams for weeks after it is applied, and it self-heals when a stone chips it. A product that dries stays where it landed; if the coverage misses a seam, that seam is unprotected until next year. On a frame that already has surface rust, the wet film soaks into the scale and stops it; there is no stripping, no primer.

  • Creeps into seams and cavities after spraying
  • Self-heals around chips and scrapes
  • Goes straight over existing surface rust
  • Never cracks, so it never traps water underneath

Where the other one has a point

A dried film is cleaner. It does not carry a smell for the first few days, it does not leave a light residue on a driveway, and it holds up somewhat better to a summer of pressure-washing. If your vehicle lives in a heated garage, gets washed weekly and is new, the difference over a single season is small. If it lives outside, drives gravel and salt, and already has some rust on it, the film that keeps moving is the one doing more for you.

What we would not tell you

That either product is permanent. Neither is. Michigan winters take a year's coverage off any of them, which is why every shop in this trade — whichever product it runs — books the same customers back each autumn.

Questions

Questions people ask

Is FLUID FILM® better than Corrosion Free?
For a vehicle that lives outside, drives salted and gravel roads, or already has surface rust, FLUID FILM® does more: it keeps creeping into seams after it is applied, self-heals around chips and goes straight over rust. For a garaged, frequently washed, new vehicle the difference over one season is small and a dried film is cleaner.
Does FLUID FILM® smell or drip?
It has a mild lanolin smell for a few days and can leave a light residue on a driveway the first week. It does not drip once the excess has settled; we wipe the visible edges before the vehicle leaves.
Does FLUID FILM® wash off?
Gradually, over a winter of salt spray and pressure washing on the exposed surfaces — which is why it is reapplied annually. Inside the seams and cavities, where it matters most, it stays.
Can you apply FLUID FILM® over a previous coating?
Yes, over most of them, and over existing rust. If a previous hard coating is cracked and lifting, we will tell you what we find on the rack.

Still not sure it is worth doing on yours?

Ask Rick

Stop it before it starts.

Tell us the vehicle and when you could drop it — most jobs are done the same day.