Your experiences of undersealing; waxoyl, lanoguard etc

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Following the Car Focused YT video on using lanoguard it got me thinking about my two 80’s & 90’s cars that I’ve had for years.

I tend to take them off the road in the winter, but I’ve thought about treating the undersides of them, has anyone got experience of doing this and got hints, tips and advice on what does & doesn’t work, best tools to use (he used ramps which would seem a better bet than my usual trolley jack/stands) etc.

It would be especially interesting to hear from anyone who’s used multiple ones and what they feel did & didn’t work. I’ve avoided waxoyl as I got the impression it can be very thick and gloopy, but the lanoguard spray part at least didn’t seem too bad.

Cheers in advance

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QJumper said:

Ramps are certainly easier, but you'd need jack stands if you're planning to take the wheels off to do the wheel wells.

I also used the Bilt Hamber stuff. Dynax UB for the underside and Dynax S50 for any cavities. Both were very easy to apply, with the UB spray can coming with a straw, and the S50 can coming with a 2 foot lance with a 360 degree spray head.

Depending on how thorough you are, it's not always possible to get into all nooks and crannies, so I finished off by liberally spraying everywhere underneath with ACF 50. Apart from helping to cover any missed bits, it also seeps into any cracks and crevices, as well as additionally lubricating the suspension components.

Only tips I can add is to cover the brakes with a plastic bag if you're going anywhere them, and put something like a plastic sheet or cardboard underneath, as things can drip for a day or so. Goggles and a mask are also good while you're spraying around underneath.

Thanks for your reply. I actually did the wheel wells on one of them years ago, scrubbing off 15+ years of road grime was quite something, utter madness really! But point taken re stands if taking the wheels off, only issue is having a gravel drive makes using them a bit dodgy.

Thanks re the specific products I don’t know anything about them so shall have a read up.

Re ACF50 does yours come out easily in spray form? I ask as every winter when I’m doing jobs on them
I spray a little after Harry Metcalfe mentioned it years ago & it seems very runny & creates a right old mess, maybe my can is knackered!

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Tc24 said:

I've been impressed so far with the Bilt Hamber Dynax UB I applied.

Sprays on, forms a soft to the touch waxy film once dry. Nowhere near as oily as Waxoyl.

Thanks for your reply, it’s reminded me I used Dynax of some description when we did some work on the rear chassis legs years ago.

My only reservation being it seemed quite difficult to accurately apply as oppose to the spray of the lanoguard, but as it’s not as thick seemingly that might not be as effective?