Under sealing Vehicles

[zyklon]

Just wondering what’s the best product to underseal jeeps/pickups etc from rust and corrosion? Old jeep is up for MOT so want to give it a coat once it’s washed underneath and my new Hilux arrived the other day and have it parked in the garage and haven’t used it yet till I give it a coat of something also.

Used to use waxoyl but it’s messy so just wondering is there anything simpler and just as good to use?

Heard a product called Lanoguard mentioned by a few people. Anyone used it?

 

[carbonfibre farmer]

Just wondering what’s the best product to underseal jeeps/pickups etc from rust and corrosion? Old jeep is up for MOT so want to give it a coat once it’s washed underneath and my new Hilux arrived the other day and have it parked in the garage and haven’t used it yet till I give it a coat of something also.

Used to use waxoyl but it’s messy so just wondering is there anything simpler and just as good to use?

Heard a product called Lanoguard mentioned by a few people. Anyone used it?

Yup used Lanoguard on my (New to me) truck back end last year.

Easier to apply than Waxoyl I found. Seems to be holding up well. Ill look to do it again late summer.

 

[Northeastfarmer]

Always wax oil the underneath and chassis every year

 

[rob h]

Wax oil takes some beating it's not difficult to use.we have a cheap underseal gun on the air line that only has wax oil in saves having to clean it out for other jobs

 

[ACEngineering]

Yup used Lanoguard on my (New to me) truck back end last year.

Easier to apply than Waxoyl I found. Seems to be holding up well. Ill look to do it again late summer.

Lanoguard is supposed to be done annually i think? If so not as good cause i'd rather do it once and it stay there!

 

[Richy12]

Wash thoroughly, allow to dry, I usually leave indoors overnight,

Clear wax oil in a metal tin on a camping stove, metal wax oil air line gun

Heat the wax oil on the stove with the cap off, ocassionally shaking or agitating until fully liquid, pour into application gun, apply and let dry.

This system seems to work better due to the waxoil setting better from hot/liquid state

Dinitrol for the internal arches and cavities

 

[texelburger]

I'm having my modern classic sports car done in a couple of weeks.My local Alfa specialist is doing it and he was saying you have to becareful,when undersealing,what product is used and how you do it.Apparently you have to be careful so that water can't get trapped between the sealant and the metal.

 

[Johnnyboxer]

I used Dinitrol on my Hilux chassis

 

[Bill dog]

I asked my local mechanic about putting something below my 03 plate Jimny. He assured me if done in 03 , then fine, but totally pointless now, as it’s likely the rust that holds it all together!

 

[X344chap]

I asked my local mechanic about putting something below my 03 plate Jimny. He assured me if done in 03 , then fine, but totally pointless now, as it’s likely the rust that holds it all together!

Whats best for older vehicles that have some rusty bits - i'm thinking wire brush off the worst - treat with rust converter then apply some red oxide primer then spray with black stone guard?

Then overtreat the lot with waxoyl?

A neighbour rubbed down his rusty bits and then just painted on black hammerite - but it was rusty again after a year or two.

 

[GeorgeK]

Whats best for older vehicles that have some rusty bits - i'm thinking wire brush off the worst - treat with rust converter then apply some red oxide primer then spray with black stone guard?

Then overtreat the lot with waxoyl?

A neighbour rubbed down his rusty bits and then just painted on black hammerite - but it was rusty again after a year or two.

I prefer something thin that soaks into the rust and kills it. Anything that sits on top like waxoyl or paint traps water and makes it worse then peels off. I use Morris Ankor Wax it's great stuff, warm it up and it's like oil then dries like wax, it kills rust turns it black. I also thin it down with WD40 or similar for spraying. I have also thinned Waxoyl in this manner so it gets into the rust, makes it work much better on already rusty stuff in my opinion. Dinitrol is another thin one that soaks in.

 

[Richy12]

Whats best for older vehicles that have some rusty bits - i'm thinking wire brush off the worst - treat with rust converter then apply some red oxide primer then spray with black stone guard?

Then overtreat the lot with waxoyl?

A neighbour rubbed down his rusty bits and then just painted on black hammerite - but it was rusty again after a year or two.

Wire brush cup on a grinder, würth red oxide is great stuff, then black or body colour paint over the top

 

[feilding]

the garage I use to service my vehicles use black waxoil and mix waste oil into it, then spray inside chassis and outside and all the underside. both my discovery 2s are done twice a year for the last 20 yrs. chassis are perfect on both. the only downside is they are a bit messy to work on the underneath.

 

[carpenter1]

Someone local to me does his with waste oil and creosote mix

 

[GeorgeK]

Someone local to me does his with waste oil and creosote mix

I have noticed creosote keeps the rust off old metal in posts and sleepers. Not sure it would be great for rubber components

 

[Paddington]

So pleased one year in having my Disco pass the MOT with no advisories I got it professionally steam cleaned and black waxoyled. At £200 a pop it looked much better underneath, but the first powerwash some weeks later removed most of the chassis coating and all the wheelarch coating.

 

[Martyn]

Is this worth doing to a new tractor? I see our steps are already showing rust at a few months old.

 

[Wilksy]

I had my defender done with Dinitrol, they had it a week, steam cleaned left to dry for two days all rust knocked off treated and finally sealed think it was £800

 

[Northeastfarmer]

the garage I use to service my vehicles use black waxoil and mix waste oil into it, then spray inside chassis and outside and all the underside. both my discovery 2s are done twice a year for the last 20 yrs. chassis are perfect on both. the only downside is they are a bit messy to work on the underneath.

D2’s bloody need their chassis doing...I should know

 

[startinghandle]

Only one mention of best product available which costs nothing ---
Waste oil
In 2001. I bought Vauxhall brava pickup of guy who made his living undersealing holiday caravans and he had sprayed underneath pickup and you can guess the rest