How to get it done
Tell us the vehicle through the quote form or call, and we'll confirm your price, usually the same day. Then we set a time, any day of the week. It takes about an hour, so wait for it or leave the keys in the drop box.
The product · Port Huron, MI
FLUID FILM® undercoating in Port Huron, sprayed wet and left to creep
FLUID FILM® undercoating is a lanolin-based oil film we spray under and inside your vehicle at our Port Huron shop. The price depends on your vehicle's size, and it's renewed once a year. It stays wet, so it keeps working into the seams after the vehicle leaves the rack.
2498 Lapeer Rd, Port Huron, MI. 7 days · 9 AM – 10 PM, by appointment. Key drop box for drop-offs.
Full underbody rust protection: Small vehicle $350 · Mid-size / full-size $400
- wool wax, not rubber or asphalt
- Lanolinwool wax, not rubber or asphalt
- no cure, so no shell to crack
- Stays wetno cure, so no shell to crack
- no stripping first
- Over rustno stripping first
- renewed every fall
- Yearlyrenewed every fall
What FLUID FILM® is
It's a corrosion preventive made by Eureka Chemical Company of San Francisco, built on lanolin, the wool wax that keeps the rain off a sheep. Its maker describes the bulk product as solvent free, so nothing evaporates and leaves a dry skin behind. What stays on the metal is a film that repels moisture and keeps moving.
Is it an oil undercoating?
Yes, in everyday terms. Oil undercoating, oil spray and under-car oiling all describe a film that goes on wet and doesn't cure, unlike a rubberized or asphalt coating that dries into a sheet. Strictly, FLUID FILM®'s base is lanolin, so you'll also hear it called a lanolin or wool-wax undercoating. Woolwax, written as one word, is a separate brand, and it's not what we spray.
How it goes on
The vehicle goes up on the rack, and the film goes onto the frame and into it. What the spray can't quite reach, the film finds on its own over the next few weeks.
- We look underneath first and tell you what we find
- A dirty underside gets a wash, degrease and frame flush
- Heavy scale gets knocked off, billed by the hour; light surface rust just gets sprayed
- We wipe the visible edges before it comes down
What to expect afterward
It has a mild lanolin smell for a few days and can leave a light residue on the driveway the first week. The underside won't look painted. It wears back on the exposed surfaces over a Michigan winter, so it's a yearly job, and the annual touch-up is a flat price.
When it won't help
A film won't rebuild a frame that has rotted through. If yours looks badly gone, send a photo through the quote form first and we'll tell you whether it's worth doing.
Questions
Questions people ask
- Where can I get FLUID FILM® applied near me?
- At our shop, 2498 Lapeer Rd, Port Huron, MI, seven days a week by appointment. All the work is done there; we don't offer mobile service. Send a quote request or call (810) 357-3023.
- How much does FLUID FILM® undercoating cost?
- There's one price for small vehicles and one for mid-size and full-size, both listed on this page. Commercial vehicles and trailers are quoted per unit.
- What is FLUID FILM® undercoating?
- A lanolin-based film sprayed onto and into the underside of a vehicle to keep moisture and road salt off the metal. It never fully hardens, so it keeps creeping into seams and flows back over stone chips.
- Is FLUID FILM® undercoating the same as rust proofing?
- At this shop, yes. FLUID FILM® is the product and rust proofing is the job it does, so it's one appointment and one price. The rust proofing page lists everything that gets covered.
- Can I bring my vehicle over from Sarnia?
- Yes, you're welcome here. The shop is in Port Huron, on the Michigan side of the Blue Water Bridge, and FLUID FILM® is what we use if you're looking for an oil spray. All work is done at 2498 Lapeer Rd, Port Huron, MI, prices are in US dollars, and you can get your price before you cross.
Not sure it's worth doing on yours?
Ask Rick →Stop it before it starts.
Tell us the vehicle and when you could drop it off. Most jobs take about an hour.