I've got some spots around the car where I'm seeing some surface rust. I'd like to treat them to stop the cancer from really setting in. My first thought is a POR15 product, but wanted to check the group to see other thoughts. They aren't big spots, and for the most part there is not alot of exposed metal, just 1 or 2 inch places.
POR 15 is good stuff, but it works best if you can do both sides. When you can't, you could mix up some regular vinegar and water and dab it on, wait till it dries, and turns the rust black, and wash off the rest. Ratio is 3 parts water, 1 part vinegar. The best is to sand down the spots to just outside of the rusty perimeter with 80 or 120 grit to bare metal, tape off enough around to prevent overspray, and use some brand of rust killer, then prime it with rust inhibiting primer (Rustoleum, etc.) until you get a chance to refinish the area. If its just light rust, I'd use the Vinegar/Water mix, then Rustoleum primer, or a small can of epoxy primer until you can refinish it. When you wash off the vinegar/water, let it dry, then wipe it down with a degreaser or acetone, then prime.
Vinegar is good on salad! It also takes the burn out of sunburns. Never tried Ospho on salad. Light rubbing with steel wool then Rustolium is good for small surface rust.
He just wants a cheap, quick fix, until he can do something permanent. OSPHO is a whole gallon and pricey for a small job, at least here in Canuckistan.
There is one spot on the exterior that I really need to sand out, all the others are places like at the bottom of the door, tailgate(although for the tailgate I really would like to get the panel off and por15 in there as much as possible). I need to get a pic of that one outside spot and get the groups input on the best way to proceed.
I just got new 1-1/4" Front Control Arm nuts for the Grade 10 1/2" bolts for my wagon's suspension. I don't want to paint them, but I want a phosphate coating that will be more permanent than OSPHO, which can last for maybe a year or two until the parts are primed or painted. OSPHO works on rusted metal really well, and converts the rust to a phosphate. It doesn't treat new metal. So I got another product that doesn't leave a paint like coating on the threads: http://dominionsureseal.com/index.p...d=36:rust-off-gelliquid-&cid=5:anti-corrosion Cheap enough at $5.00 CDN for about 8 ounces (227 ml). You dab it on and let it dry for 10 minutes. For rusty parts, you dab it on again and let it dry for another 10 minutes. This is a phosphate coating, like those carburetor bodies, only no yellowish/gold coating, just clear and does treat NEW metal. Once the bolts are installed and torqued to 150 lbs., I'll prime and paint them OSPHO wants 24 hours and then you have to wash it down with degreaser or acetone, and brush off any white powdery residue. Different products for different uses.
In Canada, we only have one source for OSPHO out of Toronto, with shipping its $52 per gallon. In the USA, you can buy it at any ACE or Lowes store, a lot cheaper than us.
Oh, and for really crusty parts, including hardware, I use molasses and water, (7 parts water, one part molasses) soaking for about 10 days, wash off, and prime and paint, or OSPHO before priming. Lots of great youtube videos on this. Some guys get cattle watering troughs and dunk a whole car body into it. Clean off with a pressure washer, and carry on. Vinegar cleans off surface rust, not crusty rust.
I'll give the vinegar a try as it costs me nothing but time. Got an ACE around the corner I can check for the others, plus with Amazon Prime I can get almost anything in 2 days.
yup get a cheap spot blaster at harbor junk. Rust will Always come back unless it is completely eradicated .
