[crshrmn3]

I got a deal on a new tailgate shell for my Suburban. As many of you know, Suburbans are notorious for the tailgate to rust out. I want to protect this new tailgate the best I can to keep it from rusting out as the original did. Would a good coat of Rustoleum throughout the inside of the tailgate shell be sufficient or would something different be better to help ensure the tailgate won't rust out again. Thanks

[zonk]

maybe por 15 ,or spray on rubberized undercoating

[troy-curt]

Corrlless from Eastwood is a good product. Por 15 is also a good product.

If you need another one, let me know,
I have one with the glass in it cheap
out of a 90 model.

Troy

[crshrmn3]

I have been able to find some deals on complete rustfree tailgates, but the shipping is the killer. I ended up getting a brand new tailgate shell for $50. Hard to pass that up.

[adtkart]

WHatever you decide to use to protect the inside, make sure that you leave the drain holes open. Chebbys don't need anything to help them rust. They need good drains to allow the water to escape.

[crshrmn3]

Do you think it would be a good idea if I either enlarge the existing drain holes some or add a few extra?

[Kevin45]

You could add some extras but probably not necessary. The biggest thing you need to do is seal the inside from moisture. POR would work as well as a rubberized undercoating. Before you do any coating though you need to clean any grease from the inside so it is as clean as possible. I would pick up a gallon of cheap lacquer thinner and pour it on the inside, work it around by tipping turning, rotating etc. then coat the inside. If you use something along the lines of POR 15 I would pour some of it inside and do the same as with the lacquer thinner so you get the POR 15 in all the nooks and crannies.

Kevin

[Goldduster360]

That waxy based rust proofing that comes in a spray can will stick to anything and would work great on a new part just make sure you can coat everything you want to since you may not be able to see what your spraying if access inside the tailgate is limited.

[asennad]

I am surprised that people would suggest POR 1- or Corrolles on a rust free part. Both these products must have a rusted surface to bond too – otherwise they won’t stick. I know this from experience as I have seen had POR-15 flake off existing paint and clean sheet metal. Any cheap enamel rust paint like Rustoelm would be better protection

On an enclosed interior space that only thing I know that is guaranteed to stop existing rust and prevent new rust from forming is a wax/ light oil based product like Fluid Film or Boeshield.

[mitmaks]

or you can use special tool that's used in auto body, it looks like grease gun but with longer, flexible tube, u can get it inside any small hole/opening and spray with anti rust primers, etc.. also make sure ur seam sealers is applied to all of your seams or its gonna rust in there.

[crshrmn3]

Well I picked up the new tailgate today and it was a brand new part still in the box. What a deal at $50. Isn't Ebay a great thing.

I really do appreciate all of your input.