What do you use for rust prevention? - Dodge Cummins Diesel Forum
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post #1 of 55 (permalink) Old 05-17-2017, 06:46 PM Thread Starter
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Question What do you use for rust prevention?

My '17 only has about 4K miles and I already see rust spots under neath. I'm not disappointed as this will give me an excuse to work on my truck

What do you use to paint over rust spots? Any tips?

Also does anyone else with a low mileage truck have rust spots underneath?

Thanks in advance.


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post #2 of 55 (permalink) Old 05-17-2017, 06:55 PM
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Fluid Film, I put that s on everything.
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post #3 of 55 (permalink) Old 05-17-2017, 06:56 PM
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I don't like conventional undercoatings that try to seal, it cracks, whatever is there is somewhat sealed in, I think a simple overspray (like fluid film or the others) is the way to go.

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post #4 of 55 (permalink) Old 05-17-2017, 07:37 PM
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Is the rust on the body or frame? Depending on the extent of the oxidation, you might also look at POR-15. It's an excellent product line and some you can apply directly on the affected area without surface prep, assuming it's a frame or suspension linkage component.
Stop Rust with POR-15 - We Know What Permanent Means!
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post #5 of 55 (permalink) Old 05-17-2017, 07:45 PM Thread Starter
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Is the rust on the body or frame? Depending on the extent of the oxidation, you might also look at POR-15. It's an excellent product line and some you can apply directly on the affected area without surface prep, assuming it's a frame or suspension linkage component.
Stop Rust with POR-15 - We Know What Permanent Means!
It's on rear diff and other metal parts. Not everywhere and definitely not on frame.

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post #6 of 55 (permalink) Old 05-17-2017, 07:49 PM
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Por-15 is a great product I have used it in the past. I live close to Canada and bring my truck up once a year to have it under coated, they use an oil/wax mixture and it sticks right to the frame and prevents rust. But you get real dirty working on your truck with it on there. $70 for undercoating.
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post #7 of 55 (permalink) Old 05-17-2017, 07:51 PM
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Fluid film, spring and fall. Buy the upgrade applicator gun kit. You'll save the extra cost in product not being wasted the first year. I deal with Kellsport in Fall River Ma.
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post #8 of 55 (permalink) Old 05-17-2017, 08:01 PM
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fluid film is the way to go

I don't drive fast, I fly low
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post #9 of 55 (permalink) Old 05-17-2017, 08:11 PM Thread Starter
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Thanks everyone!

And here I am thinking a quick trip to autozone/o'Riley's to grab some black spray paint for rust is the way to go.
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post #10 of 55 (permalink) Old 05-17-2017, 08:22 PM
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Fluid film here too. Ordered a 5 gal pail 2 years ago and have about 3 gals left. Applied with an airless paint sprayer every fall.
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post #11 of 55 (permalink) Old 05-17-2017, 08:40 PM
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Originally Posted by nick00less View Post
Thanks everyone!

And here I am thinking a quick trip to autozone/o'Riley's to grab some black spray paint for rust is the way to go.
Heard of guys doing that also... Don't really see why that wouldn't work...
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post #12 of 55 (permalink) Old 05-17-2017, 08:53 PM Thread Starter
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Heard of guys doing that also... Don't really see why that wouldn't work...
Well does it?

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