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  #1  
Old 06-10-2004, 06:04 PM
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Unhappy 1993 300E- I need some "Rust"assurance!

I have recently purchased a pre-owned 1993 300E with 120K on it. (3.2L).

The one thing I knew it needed was a new power antenna mast. In doing the job today, after pulling back all of the carpeting on the driver side of the trunk in the "well", I noticed substantial rust. It looks as though there is a drain tube that is made to just drain into this well and then drain out of a hole. And I am sure that over time, it has caused seious rust issues.

So as you would expect, I am frightened over the purchase now based on the rust. Can someone tell me if this is "normal" for a 300E of this age? Is it something I should think about dumping the car over?

The engine is strong and the transmission is smooth as silk. I am just concerend over the rust.

Any words of wisdom?

Thanks,
Jeffandmaria
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Old 06-11-2004, 12:03 AM
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Where do you live? Where did the previous owners live? These cars are pretty tough. In all likelyhood it's surface rust but I think you're smart to get it thoroughly checked out.
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Old 06-11-2004, 01:37 AM
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Does your car have 120,000km or 120,000miles? What ithe weather like where you live? I have seen Mercedes in the same city going through the same weather condtions with similar mileage, and one having little rust and another having significantly more. I don't know why, but 10 years on a car even a great one like a Mercedes is a long enough period of time for a car to rust, especially here in Canada. I see rusted cars all the time that are around 10 years old.
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Old 06-11-2004, 08:23 AM
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I live in Pennsylvania and the car has alwsys lived in Pa. as well. I will reply once I get it checked out. JUst scared me a bit. If anyone else has any words of advice, please post them.

Jeff
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  #5  
Old 06-11-2004, 11:05 AM
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I would be concerned. You've got to stop rust in its tracks - or at least slow it down. Rust only gets worse. Be thankful it hasn't perforated to the outside yet. Clean out what you can. Rustproofing would help tremendously, even on rusted surfaces using the proper formulation.

Others have raved over a product called POR-15. Try searching for info with the keyword "POR 15".
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Old 06-11-2004, 11:32 AM
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I would be concerned too... ...there is no rust of any kind on mine.

Granted, it's a Texas car, and although a daily driver, doesn't see the kinds of corrosive agents used to thaw ice-covered streets.

I would agree about the POR-15. It's a rust neutralizer. I used it on sections of my wrought iron fencing seams to hold off the rust permanently and allow the use of primer and paint.

It's an easier solution than trying to strip off the existing rust...but you need to check the rest of the vehicle thoroughly if the PO allowed that area to fall into neglect.
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  #7  
Old 06-11-2004, 11:42 AM
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The water is coming from the antenna mast gasket. Seal that up and check for debris in the gasket around the trunk surround. Use POR 15 or some other rust stop chemicals and if you can leave the trunk open to let it dry out. Take out the trunk lightbulb so you don't kill your battery.

My trunk is always a little damp inside, even after sealing up the big leaks.
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Old 06-11-2004, 03:29 PM
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This may be obvious, but I'll mention it anyway. Make sure the whole area is clean. Clean out all debris and clean and dry thoroughly. Make sure the drain tube is completely clear by passing a rod (coat hanger works, speedometer cable works very well for this) down through the hole.

Repaint any rusted areas with POR-15 (it can't be beat). Try to get on both sides of any rust area if possible. Now would be a good time to make sure ALL of the drain tubes are clear. There are several in the engine compartment/windshield area; a couple in the sun roof, both sides of the trunk, and in the gas cap area. Clean each one and paint any rusted area with POR-15.

Make sure the trunk seal is in good shape. Make sure the window gaskets are good. Sometimes the rear window seal will leak. Remove the trunk lining and inspect the area underneath there by the window. As onrails mentioned, the antenna grommet is probably bad...replace. Also look in the battery and fuse box areas and clear any leaves, etc. Paint as necessary. Make this cleaning/inspection a periodic (at least yearly) event, like checking your coolant, brakes, etc.

If you do all of the above, the POR-15 will stop any existing rust, and you'll check any future problems before they get started. Just consider that this will be a good time to 'get familiar' with your new purchase! :-) You'll probably learn a lot.
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