Preventing frame rust

Amzoil makes a product that fit's this spray on "waxy" description. It's described as a metal protection.

 

It seem's that all auto makers have adopted these body, frames and chassis components that are made of thin stamped steel "parts", that are very light weight & spot welded together in multiple layers to create a larger part. These are prone to capillary action along the many inches of "seams" that are created with this method, drawing in all things wet that will eventually win in the corrosion battle. I'm sure they do it for weight savings and manufacturing costs & design flexibility but then there is "planned obsolescence".....

 

the welds on the frame member behind my front wheel well has some light spotting, but nothing concerning YET. Im just going to spray with FF

 

Perhaps we should drip oil in between the layers of metal in the areas like shown in the second picture where the rectangular plug was removed....right where the two layers of metal are exposed??

 

Hey guys, third gen interloper here! I use fluid film all over the underside of my truck, but now that it is spring, I want to clean it off my suspension and frame so I can later reapply. What do you recommend? I've heard of using simple green, but want to make sure it won't harm anything on our trucks. I don't have a pressure washer, so I'm kinda limited.

 

I never used it nor will I ever for that simple reason. I'm on the beach constantly and the last thing I want is to worry about my truck turning into a chicken cutlet.

 

Hit up one of those do it yourself car washes with the high power hoses. Simple green wontn harm anything.

 

Why would you clean it off? Leave it on there and put another coat on next fall. My frame is great after 16 winters and being under coated every fall and never cleaned off. If the metal stays covered is will stay better than washing it all of every year.

 

I have used Boiled Linseed oil on all my Yota's. My old 1st gen taco which is my DD and beach truck and has been treated with this for 13+ years and the frame still looks great. I give it a coat once every season, you can also get it @ home repot or lowes put it in a bug sprayer and spray it in the frame as well as the underside. Lot's of people use it down here it dries hard and last a long time. Just my .02c

 

I find with anything that dries hard over time will often start to peel. Once it starts to peel water and salt get behind it making rust worse. If salt is not a factor where you live I can see this working fine. We have salted roads about 6 months and something that never dries (fluid film, krown, rust check) seem to work the best here.

 

I can see fluid film being perfect for salted roads. The problem I have had with it is on the beach is when the sand is deep and the cross members and frame drag on the sand it just wipes the fluid film off quickly where the Linseed oil is thicker and holds up better. I have never had the linseed flake off it just seems to dissolve over time but I am sure if it's on thick enough it will peel off.

 

I kinda want to clean it off the shocks, and see if the frame needs any touch up painting before fall. Plus I hate looking at a bunch of dirt, lol. But you may be onto something, leaving it on and keeping the metal covered. I also have salt for about 3-4 months, so I don't want that crap stuck on it forever. I do try to rinse the underside about once a month when salt is on the roads.

 

A pressure washer will clean it (FF) where you can reach (or see it). It does seem to wear away somewhat over time. It gives me comfort knowing it's worked into the seam's & "crevices" that can't be washed but I fully understand visible frame & shock's, etc.
The boiled Linseed oil is interesting, it's gotta smell better going on

 

We try to put F.F. on when it has been dry for while. Get a good coat on and go for a good drive on a dirt road.Dust seems to make it stick better. I do scrape some off in snow during hunting season but touch it up with spray can where needed ever time I am under truck and good coat (1 gallon) in fall. It is terrible messy to work under truck and the smell could certainly be better.

 

I did that for years with old crank oil! It does work

 

My father used it for years worked great. Not suppose to use it anymore so F.F.it is.

 

I have tried a lot of things and what has worked best to prevent rust, especially when exposed to salt is to get a chemical sprayer and fill it with old engine oil and add diesel fuel to the oil until it can be sprayed out the sprayer. Clean the undercarriage and then spray the solution. It is amazing for preventing rust and if you see rust it will stop it in its tracks.

 

Smells good, and safe.