Hi Gents,

These few days many northern areas are extremely cold. Hope you guys stay warm!

I am living in Canada with long winter of snowing. I am wondering if you guys living similar environment did undercoating for your truck? I have an 2 months old 2018 XLT and I absolutely love it. Just on the process of selling my 8-years old suv and the inspection technician said there were some degree of rusting on the undercarrier due to salt and dirt. I normally do automatic car wash which didn't wash car underneath normally. So I understand this new generation 2018 f150 has a aluminum body. so wondering if it is worth to do undercoating after 2 months's driving? also do undercoating make it even quieter? Thanks

 

 

I saw a 2017 F-150 yesterday that had its rear bumper bleeding rust noticeably..

I suspect pin hole porosity in the chrome. It will get worse fast. Thank you Ford.
DPW puts so much salt on road, I think if it snowed again, the amount of salt on our cars would melt all the snow, so you would not even have to clean snow off.
This spring Fluid Film will go an anything that would have to come apart with routine maintenance.
I painted the frame with Rustoleum and as We live on a dirt road, am hesitant to oil the entire frame.

 

I have used Fluid Film for years with good results on a number of my vehicles. We have always used it on the farm equipment and its worked. But then again, the farm equipment doesn't see the road salt and brine. My thought is all methods (undercoat, fluid film, WD40) work well as long as it applied properly and you get the road salt off as soon as you can. Another area of concern is parking your truck in an unheated garage. Changes in outside temperatures can cause condensation in the garage and your truck will rust from the bottom up. The other thing to keep in mind, road salt that has dropped onto the floor of the garage can also cause problems.

 

Watch this before you undercoat!


SMA is great resource.​​​​​​

 

In Boston. They salt the ever living crap out of these roads. To the point where you cant even see the color of the pavement it's all just white.

Touchless car wash around the corner has water jets that come up from the ground as soon as you enter the bay. Any chance these high pressure jets can do damage to the under carriage? I know it's not 100% proof but it does help with getting the salt off.

 

Bone dry salt dust isn't corrosive......look at underground salt mining equipment.

Once water is introduced, it it gets real bad fast.

Wetting dry salt residue actually accelerates the corrosion process.......aka car wash?

Do you really get it all off?......NO.

 

I bought the 1-gallon Fluid Film ($35 Advanced Auto) and a Wagner electric sprayer ($50 HomeDepot) and used maybe a 1/4 of the gallon on the entire undercarriage, also picked up 6 aerosol spray cans ($8 each John Deere) and the 24" 360° extension wand ($15 Amazon) and did the interior of the frame rails too when we had it on the lift to do the Bilstein 5100's a few weeks ago. I still have enough to do it again next year.

 

 

Another Fluid Film user here