I find not fixing oil leaks is the best for frames.

Being a northern Californian this episode makes me appreciate how rust free my 03 Yukon still is. Moved to California from Ohio 7 years ago. It still blows my mind how an 18 year old vehicle here has less rust than a 2 year old vehicle from the northeast.

Didn’t know this product existed. I still prefer the god o’l rust oleum and a brush.

You don’t want paint over an old frame. It flakes then holds salt and moisture and ruin the frame quicker. Nice work looks good!

I put cosmoline rp342 on my 98 firebird formula that I bought when I was 16. It was completely rust free when I bought it and after 3 michigan winters, the underside is still perfect. I finally got a winter truck but I'm glad cosmoline kept my firebird perfect.

I have 5 years experience with RP-342 in the NH salt. Its the perfect choice for GM frames because the factory coating is also a wax. If you spray oil over the black GM factory wax it will melt making things worse. The fluid film company says not for use on GM frames. But people don’t know that. You will need a second coat of RP-342 cosmoline in a year then less and less touchups after that. You’re better off with a piece of cardboard and use the sprayer nozzle not the stray. Drips less. Job goes quicker. You can get a spray wand for the can but not easy because it’s a male can. Then you can put it in the frame and just pull it along as you spray. It’s the perfect way to do it. Fluid film wands won’t work. However RP-342 not so good for small tiny areas like seams. Because it’s thicker it doesn’t get down and seams very good. That’s a good place for an oil spray

GOD BLESS YOU BROTHER! I JUST PURCHASED ANOTHER 2003 TAHOE Z71, AND IT HAS SOME RUST ON THE FRAME ALSO. SO I TRULY APPRECIATE YOU FOR SHARING ALL OF YOUR SECRETS WITH US ! KEEP THE VIDEOS COMING MY FRIEND! STAY BLESSED!

Definitely looking forward to a yearly review and touch up process, thanks!

Thanks for the video and recommendation! I’ve got the rp-344 in a five gallon bucket and I’m not really looking forward to the mess.

This actually looks oem. I like it. I’m not a fan of the wax coating but it serves its purpose. Now I can touch up the frame on my 13 Tahoe. Thanks!

Living in North Carolina our vehicles last forever. Salt is only used a few times a year. I'm definitely going to use some of this to keep the salt off when I go driving on the beach

I found that bar chain oil mixed with a flashing solvent in a pressure sprayer lasts and works better, just respray once a year, drive down a dusty road and you're golden

Just did my entire Silverado underbody with RP-342 fantastic stuff but oh man what a job on a long box truck front to back

Used same product 2 years ago. Im sure you'll be impressed as I was. I managed to get some in my eye even with glasses on. I sprayed mine in August in the front yard in grass so it was a litle nicer. I still wore a tyvek suit though. And yea, this stuff smells terrible but it works!

Had this on my silverado last 2 years. Needed a little touchup this fall but holds up to salt belt winters very well.

👍🏻 to a previous comment where you should have used a rust converter prior to that wax coating . We use OSpho here. It’s cheap and readily available. Other than that looks great 👍🏻 I’ve used the regular Cosmoline which leaves a light amber color.

6 hours ago I was looking for underbody coatings. You sir, are an incredible content creator. Can't wait for some more Trans Am content!

I bought a wool wax kit from kellsports for my wife’s van and it worked out pretty good it cost more than those cans you have but i really liked it I wound up buying an extra gallon in black. Now I have neighbors wanting their vehicles done…local rates for undercoating here are ridiculous which is the very reason I bought it. I did have to pull it on ramps so I feel you on wanting a lift.

Love your videos. Thanks!

By the way cosmoline is a relatively permanent I applied it to my car 3 years ago and it still looks the exact same as when i applied it, it doesn't wash off.

Thanks for the videos Matt! I enjoy them all. I’ve used fluid film with great success,It creeps into the pinch welds and places you can’t see,I would highly recommend using it inside rockers, doors and even inside the frame and crossmembers

Looks good, you did a pretty good job also I would spray the rear diff cover those are known for rusting out and eventually start leaking.

I am planning on getting the MaxJax M6k portable 2 post lift for my garage once i get the floor fixed in it.

Remember to pressure wash the frame inside,before spraying oil or anything inside there..I lift up my Avalanche in the rear,and just use water to clean out all the sand and debris that ends up inside there.Its all that sand that are gettin wet,that really let the frames rust out.

If you want to really see how well this stuff works. Try it on you Saturn. Front wheel drive cars . They usually rust out from the firewall back . Just a thought

Hey first one here!!! Love the videos man ✌🏾

God I don’t miss the rust belt! Best rust proofing I ever did was move to Texas.

Tahiti is looking Good!!!

i just completed mine on my friends lift. mine was mostly rusting at every weld. i took a needle scaler to it, sprayed rustoleum rust reformer, and then two coats of rp342. looks really good. glad i got it done. and ive been researching my box frame inside. im thinking something more fluid like fluid film. i see rust inside most holes in the frame. or make up my own concoction. trying to decide on a spray gun with the tube and 360 nozzle, or maybe just areosol. 2015 f150

Your rig is looking great

Hope everything is going okay can’t wait for new content

It's barely noticeable, but after you pressure washed the frame there were a lot of spots of fresh metal on the outside of your rusted areas. That's lifted paint that was next in line to have rust form. If you do your pressure wash with a turbo nozzle, the varying angle of attack provided by the rotating nozzle would have lifted up much more. It would have exposed all of the rust covered by paint that you cannot see. And if you have one of the cheap amazon drain jetting kits for your pressure washer, you could use that to flush out all the dirt/debris inside your fenders, frame box sections, and with the rotating nozzle they come with, it will perform just like a turbo nozzle and blast away all the lifted paint and scale inside.

For a New York truck, that thing is insanely clean underneath

Combo of Cosmoline and Lanoline is best IMO. "Ten year of using cold galvanizing compound". Look toward the end of the thread. Toyota think the same. They recommend Dinitrol 300/700 combo.

SOME city dumps have an undercarriage spray to use for free, as long as you dump something. For me, in TN its all free and only a 20 min drive from home. As long as its "personal useage" and not for a business.

As far as going in the frame look into taking the tahoe to Krown Rust Protection, they have an oily fluid the company made that is a drying agent and a rust preventative spray, I just got my 2004 and 2005 tahoes done by them and everyone that uses them swears by the stuff. They spray it in your frame, on the whole undercarriage, in your rockers, doors, trunk, hood, and they even take your taillights out to get into the quarter panels better. They also spray under the hood along the inner fenders, core support, firewall. I highly recommend these guys, I went to the one near Utica New York, the town is Marcy. I did a lot of research before I went with them and there are plenty of great youtube videos explaining the process.

Eastwood sell a rly nice frame interior coating

I just used the rustoleum 2 in 1 primer paint in matte black on mine.

I used crc amber on my travel trailer. Its seasonal but people who have their trailers just sitting just gather the rust. The crc was good and also a mess

Looks great, and you going to put a clear coating like fluid film on all your new parts?

I took a couple weekends last spring and used corroseal all over... Nontoxic, but get it on your hands and you have black spots for a few days, and definitely not a 1 day job

There is an industrial version of Rust Veto 342. Remember to apply it inside the frame rails, door jambs, tailgate, etc.

Coming from a service member, military grade doesn't mean good. It means the lowest bidder.

came out pretty nice in my opinion

For the cavities, both Waxoyl and 3M make a great cavity wax.

Hope you.are doing good. no rush!

FYI, CRC Rust Inhibitor is the also cosmoline and it is the least expensive per ounce of any I’ve found. A 10oz bottle is like $11 and if you buy in bulk even a little cheaper. It isn’t black so that is a nice feature of the RP but most stuff I don’t care about color underneath.

Henderson Bros. In Mt. Pleasant, Michigan manufacturer’s and applies the best rust proofing money can buy.

Looking good on Tahiti. But for me I don’t have the time on my hoe.plus the cancer has all ready started on the frame for me.Key to reduce the salt aggravation on your vehicle is not to park it in a warm garage above 0 degrees Celsius in the winter. Actually rust is not active in the winter when it’s very cold outside, it’s starts in the spring when the temperatures rises. In southern Ontario we are in the same heavy snow belt as New York and we also get the same rock salt and sodium brine mixture in our roads also.

Anyone else thinks it would be nice to also have light gray RP-342 so you can easily see any chips or rust and do corrections in that area over time ? When it is black, you need to look very close to see any spots of rust.

The way that was applied you cant coat the interior of the frame and interior of the rockers. So they will rust out from the inside.

Can we get a long term review? I'm deciding whether to coat my 2019 Jeep Wrangler with RP-342, so many products but not enough long term reviews.

Lol, a bidet for vehicles!

What lift/leveling kit, size tires, and any wheel spacers do you have?

Just saw ya lost your front pump in the trans clip today(12-14-22) sorry to hear!! But I was wondering how the cosmoline has held up since this video came out?

Хороший канал! Интересный контент! Шеви Тахо лучший!!!

Coat the Astra too!

Undercoating in a Can from PSC has a similar product. We have used it for a few years

Is there any updates on how it held up?

Pump weed sprayer works a helluva lot easier than a spray bottle...

Can you please tell me if ur truck drive like a brand new on? Or better?

Just curious - how is the cosmoline doing over the rust? Does it soak into the rust and stop it, like fluid film? I ask because I use cosmiline for my boat trailers external compnents, but, use woolwax/fluid film for the inside of the tubes.

How’d this hold up over the winter can we get an update video?

Sir, I would like to know what are the tire a d rim size you have on your Vehicle please? Also, if you had to do a lift o.n it? Thanks!

So I'm also at this stage on my tahoe. My question is did you por 15 whole frame or just certain spots.. is por 15 required?

Stay firsty my friends

is it easy to get off the body paint if theirs overspray?

Hey how is it going I have a 2003 GMC Yukon Denali my check engine light is on I scanned it and all these codes came up for my O2 sensor I replaced all four the light went off and now a few months later there back on do u think I need to get oem O2 sensors or doi need to just replace the cats and if so should I get cheap ones or oem’s ???? And do u have any websites I can get cats from????

What is your approximate gas milage with the upgrades

You should do an update video??

how many cans will it take to do a 1997 chevy suburban????? I was thinking 24

How has it held up a year later?

How many miles does it have now?

Spray vs apply with brush?

How did it hold up?

So what is that deal that goes from shock to shock, mine does not have that, is it a type of stabilizer?

Hey Matt, how many cans did you need to coat everything? Going to do this to my 2005 Tahoe!

Do an H2 axle swap

t would try a rust converter then wax

I did my whole frame in por15 then fluid film

I'm wondering if you could just easily coat the inner frame with fluid film. I get that cosmline won't interact well with fluid film but as an inner spray I wonder if this would be a problem since you only sprayed the outer frame. I guess it would seep out some. Has anyone tried this?

Well been two winters, no? How is it?

Military grade=costs 5 times as much and lasts half as long.

Does it pass the first winter? How does it look like?

Hello, how can i contact you about the product review cooperation?

After u fix everything you should just give me Tahiti

When u pull the engine out 🤔🤔

I use to coat my frame every year with motor oil and 2 years ago tried RP-342 and now i have a hole in my frame. I dont know if i locked in moisture or if there was an old issue but I dislike this stuff..

Military Grade 🤣🤣🤣

Remember, military grade is the cheapest stuff, I also wonder what she'll look like with a cateye front end

How many cans did you use? Maybe you already said.

por15 is what I think most professionals reach to when doing this job for better longevity, but shits expensive

"Military Grade" = Cheapest Possible

So what is military grade ? All my yrs in the military we just let stuff rust

I'm waiting for the engine replacement. zo7, or8?

Pro tip, anything that says "military grade" is very likely to disoppoint

If you were actually in the military you would know military grade means bottom-tier worst cheapest shit you can get

Where RU hidding

Rolling up on 12x6 blocks helps, allot!

That made my hand hurt watching you spray the underbody with the spray bottle. Should just get a 2 gallon weed sprayer.