If You Do This, You’ll Never Have to Repair Rust on Your Car


rev up your engines,
today I’m going to talk about how to prevent rust on your car, now to prevent
rust, first you have to understand what rust is, rust is electrochemical
oxidation and in the case of cars, the steel, when it comes in contact with
oxygen in the atmosphere, water vapor atmosphere and other things like salt
that they put on the road and up north and winter, it starts an electrochemical
reaction that will eat up the steel in your car, it actually creates a weak type
of battery acid, that eats stuff up it’s an electrochemical reaction, it uses
electricity and chemistry to eat up the metal, now cars of course are painted to
prevent the steel from getting its electrochemical reaction, now when my
grandfather was young, Model T Fords they used lacquer based stuff, they paint it and
buff it, and paint it and buffed it, to have layers and layers of paint that they buffed to
make it look good, but the basis of modern car painting is much different,
the metal has a primer type coat on it then it has base coat, which is the color,
then it has a clear coat to protect that all those layers protect the bare metal,
and as long as those layers of protections are still there, your car
won’t rust, and when it comes to solid parts, the frame of the car and
crossmembers and stuff, these are generally electroplated when the vehicle
is built, the metal is a negative charge and the paint is the positive charge, and
when the body of the car goes into the tank, it coats it all with a zinc based
primer, now Zinc is used because it has to slow corrosion rate and it can be
used sacrificially, so instead of eating up your car, it can eat up some of the
zinc, and as you can see the process works, this is a 1994 Toyota Celica, look
there’s no rust even on the wheel arches here, the process keeps it from rusting
and I know people are going to say, Scotty hey you live in Texas cars don’t rust
there, well actually it’s very humid here and if they start to rust, they rust
really bad and if you live on the beach they would, because it’s saltwater, but my
mother still lives near Buffalo, the heart of the Rust Belt and her 20 year old
Toyota Corolla doesn’t have any rust on it.
the just works. as long as you keep the
coatings from being rubbed off or cracked off. or if you get in a wreck,
they’re not resealed and as long as the process was done
correctly, for instance there were some 1990s Toyota Tacoma pickup trucks, that
they didn’t coat the frames correctly and a lot of them rotted away and
Toyota had to replace a whole bunch of frames for free because of that, so you
have to realize, that this process of covering the steel is just a cover, it’s not
like hot zinc galvanized, where you dip it when it’s hot and hot melted zinc,
and then it becomes part of it, and if it gets scratched it doesn’t matter, this
stuff if it gets scratched or knocked off, it will start to corrode inside, so
your whole thing is to keep the coating intact and here’s how you do it, you’re suppose to wax your car four times a year, once each season, that keeps the clear coat
supple, so that it won’t crack and then water and stuff can get inside, I like
this Nufinish, technically it’s not a wax, it’s a polish but it does the same
thing, it protects the paint from cracking, because you have to realize,
it’s metal it expands and contracts in the Sun, the paint has to expand and
contract too, if it gets all hard and dried out, it won’t and then you’ll see
all that kicked up paint where it’s flaking off on your car, and here’s a tip
if you ever do get a scratch on your car it’s a good idea to just have a little
clear coat and some masking tape so if you do get a big scratch or a bump, you
can at least tape the area up and spray it with some clear coat and that will
seal it so it won’t rust, granted to do a perfect job you’d have to sand it down
to the bare metal, then put some primer on, then put the base coat color on, and then put clear coat on, but at least putting a clear coat over anything that’s been hit,
it’s going to seal it in, as long as you do it fast enough before it starts
rusting, but let’s say you got a real rust bucket that’s already started rusting,
these rust preventative paints actually work quite well, I use this rust bullet
protective coating on the frame of my Celica, because the frame is on the bottom,
rocks hit it, all kinds of things hit it and when the paint on the bottom starts
chipping off, you want to seal it with something like this, so rust
doesn’t start and eat up your frame especially for you guys living up north in
the Rust Belt hey all that salt water that comes on
when you put salt on the road and gets with the slush, that gets all
over it, of course you want to try to rinse it off whenever you can, but you
want to have the metal that it gets on sealed before anything else will happen,
I know a lot of guys up north before winter, they’ll jack up their car or truck
they’ll look under it and if they see that there’s a bunch of rust starting, they’ll
just surface rub a lot of it off, this can be applied on somewhat rusty metal and then
they can spray this on, roll it on anywhere you want, and then it’ll protect
it for the winter, now you don’t have to worry about salts on the roads and the
winter here in Houston, maybe once every 30 years when it does freeze, but hey I
know guys down in Galveston that live on the beach, and they use the stuff on
their frames, because they’re driving around in a saltwater atmosphere right
on the Gulf of Mexico, and it keeps them from rotting away, because I’ve seen a
bunch of them that didn’t, and they just rotted like mad, within five or six years,
because let’s face it, big rocks and stuff generally aren’t flying on the paint of
your car, but on the bottom of the car there’s all kinds of stuff on the road
that’s being thrown up and whacking against them, since these anti-rust
coatings can be sprayed on, you can put them in a spray gun, hey it’s not a big
job, you don’t care about the bottom of the car what it looks like, you don’t
have to be a pro to actually paint the car to make it look shiny on the top,
this is the bottom, you don’t care you just want the coating on there so it
won’t rust, because ultimately the purpose of stopping rust is to prevent
electrochemical oxidation on the bare metal, as long as that metal has got a good
solid coating on it, it will not rust, so if you never want to miss another one
of my new car repair videos, remember to ring that Bell!

100 Replies to “If You Do This, You’ll Never Have to Repair Rust on Your Car”

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  2. I have a 2005 Chevy Colorado that’s rusted directly under the cab near the passenger door side its a big hole 🕳 the tail gate is rusted that’s a hole and the paint is chipping

  3. Every car after 2010 doesn't rust. They use polymer plastic which doesn't ever rust. My friend has a 2008 golf mk5 which hasn't rusted in 11 and a half years! He went through one of the worst conditions but it still hasnt rusted.

  4. what the call rost what …please write down…why you dont show people properly the stuff or name…just bla bla bla😁😁😁😁

  5. I see 40.50,60,70 thousand doller pickups a year old And older falling to the lazy chemical, it's damage beyond our control just turn it into your insurance we are not the ones damaging our vehicles let the insurance company's and the state's that put that stuff on the roads figure it out

  6. My 07 Dodge Ram bed wheel wells are rusting from the inside out. I see this now on a lot of Dodge Rams -_- Its almost like they don't care. I cleaned the wheel wells when I washed the truck and its rusting between the inner and outer fenders. So Much for trying to have something nice

  7. First lets get the"why" first, it's because faulty manufactures allow oxidation to get to the steel…( FORD GM DODGE)

  8. Hey scotty, I want to paint the entire bottom of my truck with POR15. (Its very rusty…) is there anything i should avoid painting or can i just go gung-ho on the bottom. (I dont have the slightest bit of mechanical knowledge, Thanks) ill literally paint everything i can get my brush on unless theres something I should avoid. Thx

  9. My 91 chevy c1500 cheyenne has a finger size hole in the frame,and that hole is expanding and cracking more.The hole is between the cab and bed mount.the whole frame is rusty and crusty,should i junk it?,has 150k and 4 speed manual transmisison with overdrive,shat should i do?

  10. I noticed the wheel well under my battery was all ate out and so I used what I had, which was some galvanized flashing material, got some self drilling screws and built up a few layers of that and then used fiberglass matt over it. My resin and hardener was over a decade old but it still hardened. Amazing. Now I am looking for some kind of paint POR 15 or something much cheaper. I think the battery was being washed off with rain water or something, or something was falling off the battery over the years onto the wheel well, and that wasn't good.

  11. So hes talking about stuff that was done when the car was made. Im here because i have little surface rust starting in a few placds. I sanded it, put loctite rust elininator then sprayed rustolem paint and primer on it.

  12. I know you're trying to help however, focus on the problem and get to the point. We just want to know how to fix the problem. Thanks!

  13. Scotty how well does the electronic anti rust inhibitors work verses having your auto chemically undercoated? I've herd pro's and cons on these electronic devices but! One guy I work with who still has his truck after 10 years of owner ship said that they do work. His mechanic had asked him why his truck didn't have any rust on it if it had never been under coated he showed him this electronic device and said that it had been preventing his truck from rusting?

  14. I have used a whole gallon of black rustoleum paint on my ford f150 and went through a whole winter still looks great yes it had some rust but it wasn't too bad I do tend to knock off the loose stuff first and then paint and hope of the best I find that alot of people try an use that rubberized undercoating crap which I find to make it worse

  15. A guy I work with bought a 2017 Toyota Camry TRD edition with the V6 at $400 bones a month with ZERO interest, didn't have it for 6 MONTHS because of the shoddy paint job.
    Long story short, rust was forming on the trunk lid, took it in, had it repainted under warranty.
    Said paint job got WORSE and strated rotting further.
    Toyota…THE COMPANY told him to go pound salt after fighting.
    Traded it in for a…wait for it… TOYOTA AVALON!… Because it had 15 more horsepower 🤣
    Edit: The Camry is now under RECALL for the shoddy factory paint issues 🤣🤣🤣

  16. I always thought body panels and most metal rusted from the inside out, you won’t see it until it gets bad and works through to the outside

  17. Best thing to prevent rust up north is buying a brand new car, lift the car off the frame, and cake on POR15. Undercoating lasts like a year up here and rinsing it off in freezing temperatures does not work because it the water freezes to the bottom of your car if the car wash isn’t out of order because it’s so cold. If you do rinse under your car, now you have to drive on salted roads to get it home.

  18. Frames rust from the inside out, putting rust preventative on the outside will not do anything to halt the rust on the inside.

  19. Keep the undercarriage washed thoroughly…especially during the Winter in corrosive environments. Using oil literally everywhere including the insides of all body panels will pretty much slow it to a crawl. Using a place like Krown is only like 100 dollars a year and well worth every single penny!

  20. Man this guy can really talk fast!!!
    But I say he is about all wrong!!!
    If you don't want you car to rust on you!!! First you must know why it rusts in the first place!!!
    And that first place is!!! When the car or truck is made, they leave vacant air pockets in the metal behind the fender, and bumbers!!! ETC.!!! AND ETC.!!! WHAT I CALL AIR POCKETS ARE WHERE DIRT AND MUD CAN AND DOES GET IN THESE AIR POCKETS BUT CAN'T GET OUT!!! SO AS YOU ARE TRAVELING AROUND. SOMETIME DRY DIRT FLYS ONTO THESE AIR POCKETS. WHEN IT IS SNOWING AND WHEN ITD RAINING, WATER, SNOW, AND MUD GETS INTO THESE AIR POCKETS!!! WHICH EVENTUALLY FILL UP WITH THE DIRT!!! THEN AS YOUR CAR OR TRUCK IS GOING THROUGH THE CAR WASH!!! OR WHEN YOU ARE WASHING THE CAR YOURSELF! IT IS SNOWING, RAINING IT KEEPS THIS DIRT, AND MUD DAMP MAYBE ALL YEAR ROUND AND THIS DAMP DIRT IS WHAT DOES THE RUSTING OF YOUR CARS BODY!!!
    IF YOU DON'T BELIEVE ME!!! JUST FIND A CAR AT THE JUNK YARD THAT HAS RUST DAMAGE AND THEN TAKE A SCREW DRIVER AND POKE THROUGH THE RUST AND YOU WILL FIND THE DAMP DIRT AND MUD RIGHT ST THE RUST SPOT!
    SO WHAT YOU MUST DO I TO GET UNDER YOUR CAR AND TAKE A HOSE AND SCRAPER AND CLEAN ALL OF THE DIRT A F MUD OUT OF THE SPOTS!!! And maybe drill holes to where these air pockets can't hold water!!! AND DO THIS EVERY SO OFTEN AND THE RUST WILL STOP!!!
    Larry

  21. I live horrible climate with snow and salt. Rust usually start from inside and work it way out. Doesn't how many times you wash the car, wax, grease, undercoat, polish it, eventually rust will find it out to corroded sheet metal. Rust is cancer and it never stop sleeping or eating metal.

  22. Comment on a RUSTING car!!
    Man this guy can really talk fast!!!
    But I say he is about all wrong!!!
    If you don't want you car to rust on you!!! First you must know why it rusts in the first place!!!
    And that first place is!!! When the car or truck is made, they leave vacant air pockets in the metal behind the fender, and bumbers!!! ETC.!!! AND ETC.!!! WHAT I CALL AIR POCKETS ARE WHERE DIRT AND MUD CAN AND DOES GET IN THESE AIR POCKETS BUT CAN'T GET OUT!!! SO AS YOU ARE TRAVELING AROUND. SOMETIME DRY DIRT FLYS ONTO THESE AIR POCKETS. WHEN IT IS SNOWING , WHEN IT RAINING, WATER, SNOW, SALT FROM THE ROAD IN THE WINTER TIMES AND MUD GETS INTO THESE AIR POCKETS!!! WHICH EVENTUALLY FILL UP WITH THE DIRT!!! THEN AS YOUR CAR OR TRUCK IS GOING THROUGH THE CAR WASH!!! OR WHEN YOU ARE WASHING THE CAR YOURSELF! WHEN IT IS SNOWING, RAINING!!! IT KEEPS THIS DIRT, AND MUD DAMP MAYBE ALL YEAR ROUND AND THIS DAMP DIRT IS WHAT DOES THE RUSTING OF YOUR CAR OR TRUCKS BODY!!!
    IF YOU DON'T BELIEVE ME!!! JUST FIND A CAR AT THE JUNK YARD THAT HAS RUST DAMAGE AND THEN TAKE A SCREW DRIVER AND POKE THROUGH THE RUST AND YOU WILL FIND THE DAMP DIRT AND MUD RIGHT AT THE RUST SPOT!
    SO WHAT YOU MUST DO IS, GET UNDER YOUR CAR AND TAKE A HOSE AND SCRAPER AND CLEAN ALL OF THE DIRT AND MUD OUT OF THE AIR POCKETS SPOTS!!! And drill holes to where these air pockets can't hold water, OR DIRT AND MUD!!! AND THEN AFTER EVERY RAIN, SNOW!!! DO THIS EVERY SO OFTEN AND THE RUST WILL STOP!!! ONCE YOU DRILL HOLES SO THE WATER CAN'T STAND (POOL)!!! THEN ALL YOU HAVE TO DO IS AFTER IT RAIN OR SNOWS!!! JUST TAKE A WATER HOSE WITH HIGH PRESSURE NOZZLE AND ADJUST IT TO GET AS MUCH HIGH PRESSURE AS YOU CAN!!! AND GET UNDER YOUR CAR AND FLUSH OUT THE DIRT AND MUD!!! SO THERE WILL BE NOTHING TO RUST YOUR FENDERS, ETC.!!! AND ETC.!!!
    Check out my other YouTube videos that will save you gas!
    And some will save your life!!!
    Just type in my name. Larry Neiderhiser. Which will take you to my YouTube channel. Where my videos are.
    Don't miss out of my double your gas mileage video. This video will save you thousands on your gas bill.
    Larry

  23. You can’t paint over rust. You have to get whatever surface you paint completely cleaned and down to bare metal or it will come right back. Simple as that.

  24. How about the rust underneath…like the frame. And from the inside out. You can ONLY slow rust down by rust proofing. The only way to stop rust is to park your car on the moon or in a vacuum chamber!!!!!

  25. SCOTTY– THE US NAVY USES STUFF CALLED OSPHO. IT TURNS RUST (IRON OXIDE) INTO IRON PHOSPHATE WHICH IS PERMANENT AND NEVER RUSTS AGAIN. THEN PAINT OVER IT AND ITS SEALED AWAY FOREVER. OSPHO.

  26. They don't sell that anywhere, you gotta order it. It's so annoying. I'm
    going to make a store that sells all the good products you have to
    order. I'm going to be rich!!

  27. well Scotty up here in Canada we do spray undercoating first on our frames then after that we take our vehicles to get it sprayed with a dripless oil under the chassis and another type of oil for inside the panels like the doors excetera ..and under the hood. So I get this done every year in the fall..so if we want our cars to last that's what we do.

  28. 1990 year all car model Treated with zinc alloy metal. Such machines are still there and have not rusted to this day. American Europe on the Russian and Eastern sides. When the number of manufacturers of machines realized that there will be no profit. Began to put in metal treatment chemicals that hold the metal for 10-5 years. Then it makes no sense to carry out welding. All that remains is to move the engine and other mechanism of the next donor that says canning can inside the machine. In the year 2000 began to produce parts of less value composite metal blend. The running gear and parts of the particular data file are worn. Currently buying a 2019 car that costs a lot of money. Really scrapped after 5 years. Better to ride a car of that time that will last a long time yet. For example, Audi's 20th Century model is still in a drivable state.

  29. They should build cars with plastic floors and rocker panels……and make the dash and interior trim using mild steel. The have things bass ackwards.

  30. In Canada, rust is death and taxes….Inevitable. You can slow it down, but you can't stop it! I envy those in the south that can work on their cars in the driveway year around. I do everything that I can to get my vehicle in top shape by the end of October, then drive it like hell until the end of May when I can get back underneath it to assess the winter's damage. Then the process starts over again. 66 winters and still scraping and grinding and spraying and painting an coating and…………..

  31. I am north of scottys mother and im a firm believer in Krown or Rust Check annually and I wax 2-4 times per year… i had too many used vehicles before that start rusting out at 10 years … i plan on keeping my gear and body work is not cheap, fun, and rarely lasts more than a year or two.

  32. @Scotty, here you recommend "NuFinish Polish", but in another video you recommended "Lithium Seal and Squeal Paint Sealant/Polish". So what's the best?

  33. Scotty's mother must be at least 20 years older than Scotty,which means she is 85 or older – I'm betting she doesn't do too much driving on the salted roads in winter..she probably just pops out to the local shops..

  34. The rust usually comes from the other side of the steel panels where you can’t reach for a proper maintenance. Then the frames will also rust and eventually it’s going to be a big mess . But maybe if you kept it in a garage or the climate where you live is more favorable it will last much longer

  35. 5:03 Scotty lets say the frame has rust, you scrub of all loose rust with wire brush or angle grinder wire brush but still some rust sitting there. Will rust paint will help protecting?

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