ok, heres what i go going on. i have a 1997 and 2002 F150. well i been thinking its time to freshen up the frames on both trucks. i am going to clean all the dirt and stuff off of both frames with a preasure washer and chemicals, take a spray bottle and fill it with KleanStrip rust converter and spray it on the frames then get a couple spray cans of undercoating and spray the frames. my question is on those year trucks what kind of undercoating did they use?? i see at the store that they have rubberized and asphault undercoating in spray cans.

 

Dont have a answer about the factory frame paint . I remember taking my 79 in to a couple of paint shops 4 years ago to get bids on painting it. I was real proud to show them how I had cleaned the underside of the truck body and used the aeresol spray rubberized undercoater on it . Both shops told me to my dismay, that I had done wrong. They said the aeresol stuff will crack over time allowing water to then be trapped between the undercoater and truck metal, promoting rust . I have read a lot of posts on the net on chassis restoring/ painting, and it seems most like to do their frames with por 15 or zerorust. From the posts I have read in comparing the two, I like zerorust.com jmo
P.S Dont forget to use a full covering eye protection type goggles and gloves for hand protection. Nothing burns like rust, dirt, and caustic/petroleum products in the eyes !

 

well, i am not going to take my frame all the way down to bare metal. i just want to freshen up the look of the frame and make it look a little better. as for the under body of the truck i am going to undercoat it with a truck bed coating that i am going to mix myself and spray on with a spray gun.

 

just a thought, remember that anything you spray or brush onto a frame will be between your frame and the jack or jackstands the next time you work on your truck. I say this from experience, I saw a truck, first hand, slip and fall off a hoist because of the undercoating on the frame and excessive factory coatings they spray onto the frame to protect it. my two safety cents

 

O.k, I see. Then I would just use a flat black Rustoleum type paint and test it on a spot that is not readily visible , just to see what it looks like compared to the factory finish. Eastwood carries a frame paint called "chassis black" that I used on mine. After applying it , I found it to be a bit too shiny to suit, but I am not re-doing it though

 

cool, i will have to check it out.

 

I have found that oil engine oil works great at both protecting against rust and making everything under your truck black. I live in New York and i usually spray the entire underneath, as well as inside fenders and doors in the fall (just before snow and salt covered roads) and again as soon as it is nice and warm enough outside to recoat the frame for spring/ summer. The only downside is that it is a messy job, your truck will leave oil spots on the ground everywhere you go for a couple weeks, and it will be messy whenever you work on your truck in the future (you will be covered in oil). This is better than undercoating since it doesn't trap water like cracking or flaking paint or undercoating will. However, it eventually wears off especially when driving in rain and snow (especially dirrectly behind front and rear tires from rain water spraying against the body like a powerwasher)

As far as applying it, i just use an old sandblasting nozzle from a gravity feed type blaster, air in the bottom, and a hose on the port near the tip which is dropped into a bucket of oil, and it uses suction to pull the oil into the gun and spray it. Also, thicker oil is harder to spray on, but sticks better, often add some type of thick oil addative, such as lucas or cheaper addatives like smoke be gone. I have also heard that bar and chain oil for chainsaws works well as it is very thick and sticky, but I have yet to try it myself.

 

Not suprising that you are from New York.
I gotta say that spraying engine oil on the underside of a car or truck is NOT a good thing. Aside from the environmental damage of "dripping oil all over the place for a couple of weeks" if you ever decide to apply a proper undercoat, it will not bond due to the petroleum residue. I sure hope that you start thinking about something other than your truck when you get ready to spray it again.