Aluminum trailer care

euphoric1

Well-known member
although aluminum is impervious to rust, it is still open to corrosion not to mention a steel axle being bolted to it. This weekend I picked up my new Catalyst and once back to the shop I noticed a tilt to my rear left wheel on my trailer which is an inline enclosed steel framed trailer. it is from 2007 and years of parking it behind shop in the grass (which probably was not a good idea) finally took its toll. the rear axle had broke in half, tore the front of the axle mount from frame, twisted the rear, while under there noticed the front r/h axle mount is also separating from the frame and the bottom of that torsion axle is also split wide open and rotted as well. luckily I made it home without a trailer disaster on the interstate. Im going to retire the trailer for storage here and buy an aluminum trailer, I have had them in the past but my question is, does anyone spray the underside of frame with any kind of metal protector? and if so what do you use or have luck with?
 

swampcat

Member
Old farmer taught me to smear grease with a old glove EVERYWHERE. Also I spray trans fluid into nooks and crannies. As far as the frame to axle, or any other steel to aluminum joint, make sure there is some type of isolator. My buddy makes me these shims, if you will, about .125 thick out of HDPE plastic, then I cut to fit as needed. Best of luck with your new toys.
 

gary_in_neenah

Super Moderator
Staff member
I hope you bought a lottery ticket because that was your lucky day for making it home with a trailer as you describe.

I've tried a couple of different things except for the grease which sounds like a Holy Mess. I try to wash mine regularly after use in the salt. Definitely at the end of the season. Once cleaned with pressure washer I spray the underside with liquid wax. Hitting the areas of axle and where the steel meets the aluminum. Salt and Age are the worst enemies of trailers in my opinion. We can't do much about aging but by keeping them as clean as possible helps.

You got 16 years out of your old trailer, that's pretty good but that New Cat deserves a new trailer, make it happen!

A postscript regarding trailers, last year about this time I got the idea of checking out my trailer, lights, wiring, hitch, etc. By chance I put a wrench on one of the lug nuts and I got a full 360 before it snugged. I went to the next one, same thing. Every lug nut on my trailer was loose by a complete turn, if not more. Is it time to check yours?
 

indy_500

Well-known member
Like mentioned, preseason and postseason I take a latex glove and smear marine grease all over the axles and all around the mount area where the axle meets the frame, then spray fluid film in the nooks and crannies and all over the leafs/hardware/brakes. I take my trailer to a manual car wash after every use, and I also 2-3 good underside cleanings with a pressure washer before storing for the summer. And yes, keeping them away from moist ground for summer storage is key. Might seem a bit overboard, but for how much these things cost, and the terrible conditions we pull them thru, my mind seems it necessary
 
Last edited:

dfattack

Well-known member
I hope you bought a lottery ticket because that was your lucky day for making it home with a trailer as you describe.

I've tried a couple of different things except for the grease which sounds like a Holy Mess. I try to wash mine regularly after use in the salt. Definitely at the end of the season. Once cleaned with pressure washer I spray the underside with liquid wax. Hitting the areas of axle and where the steel meets the aluminum. Salt and Age are the worst enemies of trailers in my opinion. We can't do much about aging but by keeping them as clean as possible helps.

You got 16 years out of your old trailer, that's pretty good but that New Cat deserves a new trailer, make it happen!

A postscript regarding trailers, last year about this time I got the idea of checking out my trailer, lights, wiring, hitch, etc. By chance I put a wrench on one of the lug nuts and I got a full 360 before it snugged. I went to the next one, same thing. Every lug nut on my trailer was loose by a complete turn, if not more. Is it time to check yours?
Gary are you using a torque wrench and torquing them to the required amount?
 

mezz

Well-known member
Like Gary said, you were awfully lucky to get that home without a serious mishap. Glad it all worked out for a safe trip. Keeping the trailer clean is the key that's for sure, not to mention parked out of the grass.
 

euphoric1

Well-known member
Old farmer taught me to smear grease with a old glove EVERYWHERE. Also I spray trans fluid into nooks and crannies. As far as the frame to axle, or any other steel to aluminum joint, make sure there is some type of isolator. My buddy makes me these shims, if you will, about .125 thick out of HDPE plastic, then I cut to fit as needed. Best of luck with your new toys.
I am going to check for that insulator between axle and frame as dislike metals don't always mix, buddy of mine found thot out with a Triton trailer, interesting that you add a spacer and thank you for the information, I do like the marine grease idea, I don't know if its available anymore but knew there were products like "fluid film" or "LP3" at one time. Thank you!
 

euphoric1

Well-known member
Like mentioned, preseason and postseason I take a latex glove and smear marine grease all over the axles and all around the mount area where the axle meets the frame, then spray fluid film in the nooks and crannies and all over the leafs/hardware/brakes. I take my trailer to a manual car wash after every use, and I also 2-3 good underside cleanings with a pressure washer before storing for the summer. And yes, keeping them away from moist ground for summer storage is key. Might seem a bit overboard, but for how much these things cost, and the terrible conditions we pull them thru, my mind seems it necessary
never a bit overboard and yes was not a good decision to park in back 40 and my fault for doing so and not inspecting and as Gary said I should buy a lotto ticket as i think the only thing keeping it from completely separating is the internal spring. Thank you for the input! Much appreciated!!
 

indy_500

Well-known member
Also figured I’d mention, I used to own a 7x23 stealth. After 3 hard years of use by the previous owner, I did a complete overhaul, took the axles off and did new bearings brakes leafs hardware etc por 15’ed the axles etc. after just 3 years the frame where the axle bolts was was HEAVILY corroded. Definitely concerning. After all the repairs, I used roofing tar tape to put between the two dissimilar metals.
 

euphoric1

Well-known member
Also figured I’d mention, I used to own a 7x23 stealth. After 3 hard years of use by the previous owner, I did a complete overhaul, took the axles off and did new bearings brakes leafs hardware etc por 15’ed the axles etc. after just 3 years the frame where the axle bolts was was HEAVILY corroded. Definitely concerning. After all the repairs, I used roofing tar tape to put between the two dissimilar metals.
that would work too! provide a good insulating point. i guarantee you most people don't think about that point, even manufacturers, just as I didn't parking in the grass lol
 

Hoosier

Well-known member
I think our Legend is about 10 years old now. We've hosed it off at the car wash after nearly every trip and had to redo all the brakes once do to corrosion, but we haven't done much else to it. I did coat the bottom with fluid film year 1 but didn't keep up with it.

I'm guessing it will need to be refreshed soon with new axles and probably new brakes at some point soon. I know the tires are due as we noticed a bit of dry rot this spring, and I need to start looking into those. Only bought trailer tires for a little 2 place. Other than the door latches getting rusty it looks good otherwise.
 

Magnumb

Active member
I found this better than the fluid film...although i've had good luck with fluid film but just does not stay as good as this stuff

 

euphoric1

Well-known member
I just picked up a new SnoPro Hybrid aluminum trailer and bought a couple cans of this metal protector and coated the underside aluminum frame and the axle. Time will tell how it holds up.
I am also leading towards that product as well , my only dislike is how it will leave a discolored film, I would rather keep the aluminum brite and be especially on the diamond plate on front of trailer. All of these products listed are good products and all do the same. dingy aluminum is way better than the alternative though. One product I did come across is "sharkskin" metal protectant, anyone heard of this? used it? what do you think?
 

xcsp

Member
I've never heard of the Sharkhide metal protectant.
Seems like it would work to keep the original surface appearance.
Looks like it dries and can only be removed with laquer thinner.

1730993437215.png
 

moen_lake

Member
I used it on my pontoon boat with good results. Applied when new and after 2 years the toons look like the day I brought it home.
 
Top