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DeeJayDready

Waxoyl Undersealing

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I recently had my MOT and pleased to say it successfully passed with no issues. While the car was on the ramp I asked the tech whether he thought it could do with being waxoyled or undersealed in some way. He said he thought it was starting get to the point where a coat of waxoyl would be a good idea, particularly if I was looking to hold on to the car for the longer term. I had my previous car ('91 Scirocco GTII) waxoyled underneath a long time ago, and it seemed to be a very good job.

 

Do people think this would be worthwhile?

What sort of price should I expect to pay?

Any tips or specific things to look out for or request?

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Waxoyl is so horrendously outdated now that I simply can't accept the advice of anyone who recommends it.

 

Undersealing in general isn't a bad idea, especially on imports where they're not sealed at the factory but is it worthwhile to add more? How long a piece of string? 

Look into alternative undersealing products to Waxoyl such as Bilt Hamber as a starter, there are much better products available these days that are much less faff to apply properly and will last longer for not much price difference.

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Go on, why not Waxoyl? What’s wrong with it compared with others? Genuine question, I didn’t know there were better alternatives now. 

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Waxoyl is no good for many areas due to the type of product that it is (wheel arches, for example, it'll last about 10 minutes before it's gone entirely) and tends to dry out/flake off if not properly applied. It can't bond to powder coating at all and doesn't bond properly to flaky surfaces, so all surfaces need to be properly prepared first which takes time and therefore, if you're paying someone else to do it, money. When not properly applied it also has a tendency to trap moisture in that gets underneath it. And it needs to be applied with a rather specific thickness for it to work at all - too thin and the crud just breaks through, too think and it cracks before the crud then breaks through.

 

It's largely down to the prep and application, but there are now much better alternatives available that are less fussy to apply and therefore more difficult to apply badly and will simply last considerably longer per application. If you can get under the car, it's much more of a DIY job these days with the right products.

 

Waxoyl isn't a terrible product, it's just old tech now that has been surpassed.

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I wonder if the technician just said waxoyl as its such an industry word? Bit like sticking something down with 'sellotape' or buying a 'hoover' - brand names that are bywords for a product type.

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Well I've used Waxoyl on numerous cars and never had a problem with rust. I find it a pleasure to apply as I have a gun and compressor.

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To be honest I think it was me that said the word 'waxoyl' first, because I'd had it done before on a previous vehicle . I'm certainly not wedded to it specifically. Whatever the best quality product is that I can get applied by a local mechanic / bodyshop for a decent price will be what I ultimately go with. Not looking to spend big money on this to be honest. But I don't have the ability to properly get underneath the car, certainly not enough to do the job to the standard I'd want.

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£500.. Yowza! I'm looking to spend £100 max. Surely it's only an hours labour + materials once the car has been 'MOT washed' underneath and allowed to dry thoroughly?

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7 hours ago, DeeJayDready said:

£500.. Yowza! I'm looking to spend £100 max. Surely it's only an hours labour + materials once the car has been 'MOT washed' underneath and allowed to dry thoroughly?

In the days of old, Waxoyl was not just sprayed underneath but applied to all the box sections, inside the sills, inside the doors etc. Not sure if they still do it the same. If done in an hour they are just likely to be spraying it over whatever crap is already there and potentially just hide any problems until they get serious.

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7 hours ago, DeeJayDready said:

£500.. Yowza! I'm looking to spend £100 max. Surely it's only an hours labour + materials once the car has been 'MOT washed' underneath and allowed to dry thoroughly?

I dread to ask but what's an MOT wash? An hour isn't a long time to do a job you'll spend 10 min just getting the car up and down!

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47 minutes ago, MDMetal said:

I dread to ask but what's an MOT wash?

A standard service provided by any decent car wash / detailer which includes cleaning underneath the car to remove all the dirt and probably most importantly winter salts.

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9 hours ago, DeeJayDready said:

 I'm looking to spend £100 max. Surely it's only an hours labour + materials once the car has been 'MOT washed' underneath and allowed to dry thoroughly?

1

It will cost more than £100.00 just for decent materials alone.

 

It will take about 8 hours labour to fully prep, apply and clean up for a proper job.

 

If £100.00 is your budget then best to not bother and save your money for other goodies.

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Would you spray paint onto a dirty car when spraying it? It has to be properly prepped for the job, every crevice cleaned then dried then descaled, any loose paint and rust removed, then any rust spots remaining treated before even thinking about putting the under seal on. I am sure someone might do it for £100 and just spray it on, but you live with the problems it will no doubt create further down the line.

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I got a quote from a trusted local garage saying that a couple of hours (about £60 + materials) should do a basic underseal including the chassis legs and all key areas; but that it would cost more to do a more thorough job (wheel arch liners off etc.).

He said he reckoned about 3L should do it. We were talking Waxoyl, as he didn't know the Bilt Hamber stuff. You can currently get 5L of clear Waxoyl on ebay for £23.27. However like ilogikal1 above, a friend of mine also recommended I go for Bilt Hamber (dynax-UC), which is £50 a litre.

Sounds reasonable enough.

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58 minutes ago, DeeJayDready said:

I got a quote from a trusted local garage saying that a couple of hours (about £60 + materials) should do a basic underseal including the chassis legs and all key areas; but that it would cost more to do a more thorough job (wheel arch liners off etc.).

He said he reckoned about 3L should do it. We were talking Waxoyl, as he didn't know the Bilt Hamber stuff. You can currently get 5L of clear Waxoyl on ebay for £23.27. However like ilogikal1 above, a friend of mine also recommended I go for Bilt Hamber (dynax-UC), which is £50 a litre.

Sounds reasonable enough.

Are you planning on this "basic underseal" to be an annual occurrence/expenditure?

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Well I was told that the Bilt Hamber Dynax-UC wax lasts about 3 years, so not every year no.

Why, would you recommend paying more and having a more thorough job done with the wheel arch liners off, sills, suspension arms etc?

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2 hours ago, DeeJayDready said:

Well I was told that the Bilt Hamber Dynax-UC wax lasts about 3 years, so not every year no.

Why, would you recommend paying more and having a more thorough job done with the wheel arch liners off, sills, suspension arms etc?

 

It'll last longer if the surfaces are prepped properly. Proper, thorough prep is likely to take at least 2/3 hours on a reasonably tidy car - the worse it is, the longer it'll take.

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I used the por15 stuff and bilt hamber dynax products. It took me 2 days at home on axle stands but that included a thorough job taking off skirts, bumpers, arch liners etc and fully cleaning/prep first. Great satisfaction when finished and you have complete peace of mind. 

I sell the dynax stuff plus more on the website. 

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Pretty sure I'll end up going for the Bilt Hamber Dynax-UC stuff.
It's just how thorough a job to get done it terms of prep etc. I'll have to give that some thought. I'll probably not be getting it done until around April or so, once the weather improves and the salts are of the road etc. Ultimately the guy who'll be doing the job will have some say on that one too...

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I'm looking to do the same to my Z once the weather warms up so be good to know how you get on. I'll be at home on axle stands although I may rent a ramp to do all the cleaning work first but can't afford to leave it on ramps overnight to let it dry properly etc.

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