• The Forums are now open to new registrations, adverts are also being de-tuned.

When it comes to rust what should I do first?

Nasco12

Active Member
Joined
Jul 18, 2009
Messages
371
Location
Twickenham
Car
W202 C240 1999 Green; Previous: W202 C200
As with most W202s mine has rust all over the place, specifically, the front wings, the rear wings, two doors, the boot lid and, oddly enough, the rear just above the bumper.

This is the worst I know of:

6821695250_f95e023910.jpg


So, what should I do first? Should I:

a) get some rust prevention;
b) get it repaired, or:
c) do nothing, let the rust reduce the car to scrap.

Judging by Autotrader asking prices, I would say the car is worth no more than £1,000 and a pretty good replacement could be had for £1,500 - perhaps £2,500 after the sort of repairs that any seller is likely to have been putting off have been factored in.
 
Last edited:
Does the car have sentimental value or are we simply talking list price only?
 
Not really. I would be prepared to pay slightly over the odds to avoid the inconvenience of having to buy another car but no more than that.
 
How is the rest of the car mechanically ?
 
I'd just stop washing it then and carry on driving. :D

If its reliable, low maintenance and zero depreciation then just use it until you fancy a change.
 
If the rust was treated properly and warranted would you then keep the car
 
If the rust was treated properly and warranted would you then keep the car

You can guarantee this sort of thing? I didn't know that. It would depend on the cost.

How is the rest of the car mechanically ?

I think pretty good. Engine good. Gearbox good. The only other faults I am aware of are pretty minor: the common boot-lift problem, for instance.
 
If the car is good mechanically then you treat the rust as far as your pocket and eye warrant.

Rust on a MB body is often expected. A 'rust-free' car that you change for can be a mechanical nightmare.

I'm sure the AA have never attended to a car broken down at the side of the road by 'rust'.
 
But you think treatment rather than prevention?
 
You can guarantee this sort of thing? I didn't know that. It would depend on the cost.



I think pretty good. Engine good. Gearbox good. The only other faults I am aware of are pretty minor: the common boot-lift problem, for instance.

I have carried out rust treatment to quite a few members MB's and
offer a warranty on all my work, cost wise pm me some photos
 
But you think treatment rather than prevention?

Yes. You treat the areas affected.

Prevention would involve galvanising at production level. Then you would not be posting this thread.
 
Perhaps that should have read "repair rather than prevention".
 
Last edited:
Hi,
Looking at the pic you posted, on the bottom of the leading edge of the rear arch I would start by taking the skirts off and thoroughly checking the outer sills as the rust can often start behind these skirts and creep up my C43 had the same and needed a new outer sill on the N/S, when the skirts are off check around the front and rear jacking points of the car, and around the front and rear closing edges.
 
I'm sure the AA have never attended to a car broken down at the side of the road by 'rust'.

Cough cough :doh: In 87/88 I was a pub landlord and due to an MOT i borrowed a customers car ( I say that very loosely) to transfer 2 x 10 gal kegs of cider from a mates pub to mine, the car was an alfasud :eek: the steering was rather light :rolleyes: on the return trip and a series of small dips in the road got it bouncing and it promptly slid to a stop in a cacophony of dust and sparks, front subframe mountings had rotted through and it dropped off, arrived back to pub on breakdown truck and gave the lad his keys back :bannana: on closer inspection,front parts of the sill that took the impact with the road had smashed all the filler off showing rolled up daily mirrors used as packing to fill to :eek::eek: ,used a van from then on,and from a different guy :D
 
Is no one going to say a good word for Waxoyl/Dinitrol or similar?
 
Dinitrol and its friends are great but you really need to treat the repair it first. As others have said check under the sill covers. Assess the extent of the rot and then decide. Dinitrol is great at preventing a recurrence but it wont stop the existing rot.
 
Well, I got the sill off (heaven only knows how I am going to get it back on again) and this is what I found:

6969628157_c9e0355140.jpg


I think I've got off lightly. The rest of the sill is just fine.
 
Aah but dont relax just yet, you need to grind all that back to bear metal if possible, then zinc primer then etch primer/metal primer, painting where appropriate and then treat with dinitrol or waxoyl to stop it coming back (on areas unseen such as the parts which sit underneath the sills.
 

Users who are viewing this thread

Back
Top Bottom