Hi, looking for suggestions ...
Car is a 2006-built i6 HSE.
I'm having the underside washed and then it'll be waxed (Dinitrol).
(As part of this, I plan to pull off the bodyside bottom plastic trims and clean/wax behind).
What I want to know ...
Whereabouts to look for places that crap collects.
Where leaves and dirt might block up drain holes, or dirt might get behind and above underside components and be missed.
I already know that leaves collect at the back of the bonnet - do they work down into any cavities from there?
Anything else to look out for?
Thanks, P. The quick brown fox

Look behind the sill cover trims, mine were full of silt (mud).

Richard FL2 07 TD4 GS Auto
Ex 02 TD4 Auto

Yes mine too with rear door open you can hose them out from top.

Just fitted running boards and my plastic sills were like a compost heap, also around rear brake pipes and rear wheel plastic arch trim the rubber strips that fail with age
Also at front of windscreen I jet washed aload of crud out when I bought the car to ensure the drain pipes were clear
Apart from that my i6 is very clean underneath - FL2 3.2 i6 - There is no Replacement for Displacement

If my wife ever sells my stuff for what I told her I paid for it, there will be some bargains out there!

Thanks, that's helpful.
Didn't know you could hose out sill covers from the top., that's useful.
I should have said, I'll be taking off the plastic wheel-arch trims too, and renewing the not-very-good edge strips.
Rear brake pipes - we'll be looking there, and of course the pipes will get Dinitrol'd.
Leesbay - front of screen ...
I guess you mean somewhere in that gully that's in front of the screen and behind the rear edge of the bonnet?
Just where are the drain pipes - one at each side?
And where do they exit on the underside of the car?
I ask these questions because of what I've seen on my other car.
It's an old Peugeot Partner Combi (Berlingo with windows).
On that, leaves get down the corners of the back-of-bonnet gully and they don't come out easily underneath.
They have to be hooked out with a piece of bent wire .
It's real rust trap - can get half a handful of leaves out of each, every autumn.
But, for the Freelander, I'm interested in any place leaves or general crud might hide. The quick brown fox

The below windscreen plastic scuttle has two 3mm drain holes at each end which block up very easily with crap from the screen or leaves. I found that in the rear wheel arches the hole in the plastic liners where the spring goes through is a trap for mud etc. if your hands are small enough you can rake it out and hose it at the same time. MY14 TD4 manual XS Orkney grey.

MY11 TD4 Manual XS Lago Grey, privacy glass, rear spoiler, full ebony leather,rear seat entertainment. Gone
2001/51 plate Disco TD5 GS. Gone
95 N Disco TDi300. Gone

Thanks Exbrat,
Wheelarch plastic is coming off, I'll clean there thoroughly.
Hand-access tip useful for later maintenance.
I'll check for the 3mm holes.
Mybe give them a blow through with compressed air.
P. The quick brown fox

The last time I used a product like this (Ziebart I think) was back in the 80's on a rust prone Morris Marina. In those days you started getting rust problems within a couple of years (remember how McPherson strut mounts would rust through and fail the first MOT?).
I didn't think it was necessary on modern cars as the metal treatments are much better now and they seem to last a lot longer anyway.

I knocked my sill trims off 2 weeks back and there was a lot off compacted dirt underneath
Hope this helps

What I found under my sill cover:

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how do the sill covers come off ? are they screwed on ?

and do they go back on easily enough ?

Iain

Yes they are easy, half a dozen plastic screws underneath, remove the screws and then pull their plastic sockets out. If your unlucky you may get one that doesn't want to unscrew, but a light touch with no upwards pressure does the trick. Then its all poppers holding it on, with both doors open, from the rear ease it off until it starts to pop off. 
Hung like Einstein, smart as a horse.

thanks Shiggsy, will have a look at the weekend.

Iain

Thanks all for your info.,
Been away some time so wasn't able to reply.
Briefly, job was done Tues/Weds this week.
Comments from other forum users are pretty much same as what I found.
The sill covers collect a lot of muck.
Mostly this lies in the bottom of the plastic sill cover, away from the metalwork.
But if it built up, could create a permanently-damp area in contact with the car.
It's easy to get an idea if there's much built-up dirt in there, by looking under the car.
There's a very narrow gap, almost nothing, where sill cover meets metalwork.
If you look there with a decent torch you'll probably see small stones trapped behind the gap.
Poking in the gap with a spatula and pulling towards you will give an idea if there's much dirt.
But as has already been said, the sill covers are quite easy to get off.
The plastic screws don't always unscrew cleanly, may need a little leverage behind the head whilst unscrewing.
Trims on the door bottoms are similarly held with poppers.
After you remove the first (short) section of trim, ahead of a front door, it's all obvious.
I agree with the Dorset's post - waxing under is not really necessary nowadays.
Freelander 2 is well protected at build, with zinc-coating.
I also could see some trickles from holes which look to me like it was wax-injected from new in cavities.
My car is in good condition for its year (2006), I just wanted to keep it that way.
Just a few little edges of panels and suchlike here and there underneath, surface rust only.
Thanks for info. on drainage points fron the gully beneath windscreen.
If water is poured in there, it's obvious where it runs (and where leaves collect).
Wheelarches behind the plastic trims were pretty clean on my car, but it hasn't done any really dirty driving.
Roof gully strips not dealt with yet, though I can see they're dirty (at the end, observable when tailgate is up).
Hope this helps.
P. The quick brown fox

As my car was 6 years old last year and the corrosion warranty last 6 years I decided to have my car Dinitroled by Rustbuster last year. They did a very good, thorough job IMO.

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