new doors

[the_legend_1981]

whats a good strategy you guys use to prevent rust on rust free set of doors?

[Blazin]

Used motor oil mixed 75/25 with bar & chain oil sprayed inside them.

[77c15]

Ask your painter to paint inside the doors if possible. Also, if you want to do this yourself, just spray some rustoleum inside there and make sure you use good felts and rubbers to keep the water out of the inside.

[VileZambonie]

That ought to smell pretty good!  

[werewolfx13]

Used motor oil mixed 75/25 with bar & chain oil sprayed inside them.

I use a similar mixture of used motor oil and marvel mystery oil, mainly to thin it. I also spray it down in the cab corners once a year.

[loudnlow87]

honey coat; all youll ever need. it never really dries tho, its supposed to be like that. great stuff.

[the_legend_1981]

where do you get that? wouldnt oil just was off of the cab corners?

[werewolfx13]

If you wash your truck in that spot, it will, but I only wash that area thoroughly once a year..I had a pencil sized rust hole in my drivers cab corner, and a little bit of "softness" around it when I bought it in late summer/early fall 2006, and it hasn't gotten worse..I spray it from the inside of the cab as well as from under the truck, I don't do the inside of the doors though. I spray the backside of the rockers as best I can, down in the cab corners, and the "tailpan" on the back of the bed just below the tailgate and behind the bumper, I also spray the backside of the rear bumper, and up in those little drain slots on the outter fenders of the bed. Everything else is undercoated, and/or gets sprayed by the oil and transmission fluid that my truck flings all over the place..

[loudnlow87]

 most autobody supply places should have it. its made by crest.

[Blazin]

I use bar & chain oil because it is suposed to be designed to cling to metal! Who knows.

[werewolfx13]

I learned about the used motor oil + marvel oil from a Swedish guy..Evidently, thats their biggest method of rust prevention..They spray the whole underbody, and all the nooks and crannys..The best time is in the dead middle of summer when its hottest, because the heat causes the oil to "spread" over the metal and protect areas that you cant get an undercoater in to cover.
The bar and chain oil makes sense though, EXCEPT only certain brands of bar and chain oil actually cling to the metal. Stihl and husqvarna winter formula does, and theres some oil that is blue that does as well, though I don't remember what brand..
Poulan oil in the green jugs makes about 75% of all the bar and chain oil you see..most generic store brands are the same stuff. Its good bar and chain oil, but it doesn't cling to the metal the same. Our Stihl 660 with a 5 foot bar demands winter formula oil all year round, or it blues the tip of the bar from the bearings getting way too hot, since stihl doesn't use grease ports for their bar tip bearings anymore..bah.

[the_legend_1981]

so are you saying that its a good idea to clean the truck up and then spray the whole underneath with a mix of engine oil and marvel?

[SUX2BU99]

Not the whole underside, that gets exposed to dust, dirt and water. That'll just make a huge mess underneath your truck when everything sticks to it. The point of using oils is in hard to reach places that can potentially collect moisture and water when you don't know it.

I use a Canadian-made project called Rust Check. They make a thin viscosity product and a thicker gel-like product (Coat & Protect), both in spray cans. I try once a year to get to places like werewolfx13 said. I was under there the other day and it's still there in all of the locations that don't see heavy water spray. I haven't done it in at least 1.5 years. Anywhere you can get the long thin discharge tube into is a good place to use it. What I want to do is try heat-bending the tube into a 90 degree elbow so I can stick it into the screw holes from the sill plate into the rockers and get the inside of them really hosed down. I've also used their Rust Killer as a primer for when I repainted the inside of my wiper cowl area, where the paint was starting to peel.

http://www.rustcheck.com/products.asp

[VileZambonie]

What's wrong with some good undercoating? I'd prefer that over oil and dirt stuck to the bottom of my truck

[loudnlow87]

What's wrong with some good undercoating? I'd prefer that over oil and dirt stuck to the bottom of my truck

thank you.