Hi, just wanted to get anyone's opinion/s of/on these under car pressure washer unit type bits of kit. Seen quite a few Tube of U videos, and they '''seem''' ideal to get rid of mud, crud and general skid marks (they seem handy for off-roaders especially) thus leaving the bottoms of our 'trusty' L332s nice and gleaming...
Personally, I was/am concerned they might cause some water pressure damage/harm to any vulnerable items/components under the vehicle, or leave water ingress as a likely future rust problem...
I just wondered, really...

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I quite like the idea of these, I can’t imagine it would do much in the way of damage water wise, the underside is possibly going to get submerged in water anyway should you find a deep enough ford or flood, as long as you don’t keep it in one place for ages, I think it’ll be very useful 2007 TDV8 Vogue SE
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Cheers for that Paul. Yes exactly, as I imagine we must get plenty of rain splash when out in a bit of a torrential downpour - not that I like to do so if I can avoid doing so.
The cheapest of these washers are around £18.00 post-free - and seem to come from bio flu land but with warehouses in UK, it seems...
A suggestion is to remove the unit muck filter to get more pressure...

What a brilliant idea , especially as we are moving into the time of year when our respective
councils start spreading rock salt on the roads.

I am going to invest in one, thanks for the heads up

i've been through car washes and they had these kinda things on the floor ....i had no problems after.. ... - .- -.




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Looks like they're only 3/8" and my Kranzle is M22

Might have to investigate one of these though! Christian.


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Yes, I agree, if it’s not concentrated on the same spot for too long, should be good.

Will it affect underseal? Sprayed some on a month or so ago…

Good find.

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1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Could do with this piece of kit in the winter to get road salt off the underside of the car ie: L405

I bought one of the Karcher underbody wash/rinse chassis cleaners (only because it was very cheap) - actually works surprisingly well.

Strider wrote:

What a brilliant idea , especially as we are moving into the time of year when our respective
councils start spreading rock salt on the roads.

I am going to invest in one, thanks for the heads up

Oh yes I forgot about all that snowy weather salt prep - and considering we are entering deeper into a solar minimum (sunspot activity) period (since 2 years now) we might be in for quite a salty experience... I'm defo gonna get one! We could become the new '''heroes''' of the modern ice age era with our chunky 4x4s...

stan wrote:

i've been through car washes and they had these kinda things on the floor ....i had no problems after..

Caesium wrote:

Looks like they're only 3/8" and my Kranzle is M22

Might have to investigate one of these though!

Yes, exactly, I haven't checked if my Archer - or is it Karcher?!? - connects with any of these devices as yet? I think there are a few suggestions for adaptors etc on supplying outlets and Tube of U for the half dozen or so of different makes of these bits of kit...

mjdronfield wrote:

Yes, I agree, if it’s not concentrated on the same spot for too long, should be good.

Will it affect underseal? Sprayed some on a month or so ago…

Good find.

Yes I can imagine if left on same spot for too long and a sudden clang and clatter of metal components might suggest too much pressure but as you say water at pressure might find a way of causing some problem/s...

Tinman wrote:

Could do with this piece of kit in the winter to get road salt off the underside of the car ie: L405

Yes it should work OK for an L405 too...

Philip wrote:

I bought one of the Karcher underbody wash/rinse chassis cleaners (only because it was very cheap) - actually works surprisingly well.

I have a Karcher - so maybe I'll check this one out also...