Love this stuff !! I spray it on everything underneath. Pickups, trailers, quad axle. Keeps the Wisconsin salt at bay ! Better than tar undercoating because it's a soft wax like coating you can work with. I freshen the coating every year and my 2011 Chevy 2600 HD has no rust ! Awesome protectant !!

Amsoil’s Heavy Duty Metal Protector simply works. I’ve used it on outdoor equipment, yard decorations, and especially on vehicle undercarriage components. Always a good idea to surface prep first. Highly recommend!

Effective.

I sprayed the heavy-duty metal protection on our son's swing set two years ago. The waxy coating is still visible, the chains and hinges aren't rusting, and I can't imagine a better product for outdoor metal.

So far this does the job. Great on my pin box and other metal. Would highly recommend this stuff.

I absolutely love this product. Definitely don’t put it anywhere where you don’t want to see it. It has to be hand scrubbed to get it off if you get some on your vehicle paint or things like that. That being said it definitely sticks and last for long periods of time. The only bad I have to say. Is every can I have used the nozzle has leaked.

What can I say about this. Nothing bad. It used to be labeled, but not branded as "Motorcycle Chain Lube" in addition to heavy duty metal protector. I can see how this could work well for a motorcycle chain. This dries out to a waxy consistency, like "clean grease". I use it for garage door tracks, things like that. You spray it on and it does not move much. Dries and you are good to go. I have used it on some old car seat spring assemblies as well, and think that the automakers used something like this for that and seat tracks which I have done as well. Can't remember the name now, but remember that it is very similar to the stuff the military used to use to store any kind of metal weapon, long term. Starts with a C. This MP HD stuff I believe is the same.

As anyone who lives in New England knows, winters mean salty roads. This product does a good job of holding the salt and resulting rust at bay. My truck has plowed and been driven in every snow storm since 2005 and is holding up remarkably well. Certainly not rust free but it is in far better shape than most its age and mileage (almost 300k) due in large part to MP hd. I have used other products during the life of this truck but this one stands up the best.

I purchased this to use as a undercoating on my 2017 Tundra. It leaves a very nice finish on the metal. Very pleased with it.

I live in the northeast and winter is hard on vehicles, I use this product as an undercoating on my truck, it applies clear on metal, like the frame of the truck, seems to have a great shield against the salt and dirt on the roads

This stuff has worked better than anything else I've used in the past 12 years. Just a little spritz on adjustment screws or linkages once or twice a year works wonders!

Purchased this as an alternative to another product I have used for some time. The MPhd covers better and, more importantly, has staying power. finish is very durable so far.

The only two cans of these I've ever used ran out of aerosol. One was half full and the other about a quarter full in 3-4 weeks from first use. That being said, I still bought two more cans because I like this stuff. Other brands you spray and the product only sticks where you spray it, this stuff comes out in a liquid form and finds its way to all the crack and crevices where it later dries completely or to a tacky feel depending on how much you use making it great for automotive use.

Just started using HD Metal Protector & it’s hands down better than what I’ve been using, can see the coating still on bare metal & no rust!

This is a great product that seems to have a lot of different uses. I use the heavy duty metal protector as a lasting lube for hiem joints and as an undercoating for my Jeep’s frame and underbody to protect against road salt in the winter. Great stuff.

You name it I've tried it when it comes to products that claim they prevent rust or stop rust and some are good don't get me wrong I'm talking major brand names to Independent chemical companies and I figured I'd give Amsoil a try and I literally put it on existing rust and it stopped the rust not for like a week or a month but permanently and I did the underneath of my Toyota 4Runner from front to back and is anybody knows in the Rust Belt most products don't hold up this not only holds up but I'm just sorry I didn't find it years ago Amsoil really is the best I admit this is the first product I've ever used from them but now that I've seen what this can do I'm going to try the other products too.

Great quality product that protects all of my wave runner’s operating systems and does not easily wear off.

I use this stuff on plow moldboards to keep them from rusting. It has many other uses around the farm

This stuff should be mandatory in this humid salty environment. It works great.

I spray this stuff on the underside of my mower decks - when brand new and or really scraped. It seems to minimize the amount of grass buildup and definitely minimizes rust. Great product - but wear gloves!