To my best knowledge the hose on my 83 240D Radiator is open ended. I'm a little nervous about radiator Boil Over some hot day when I'm cruising down a NE Freeway at 100 degrees F with the AC on so I was thinking about getting a Plastic Expansion reservoir and sticking it on the end of the hose as a Summer Precaution. Is this a bad idea? Truthfully I dont like modifying the stock condition of my car--I didnt even change the radio or put on Fog lights because of this feeling.

Carrameow,

I understand wanting to keep your Benz as Benz as you can. My Euro 240D also has a simple overflow hose that runs down the shroud and deposits any overflow on the road. I have been through many days in excess of 100 degrees with absolutely no problems.

I bought another Euro 240D recently and have robbed many parts from it. It has a very nice aftermarket overflow tank and the proper radiator cap. I have my eye on it, if I ever get into a situation where I need to, I'll add it ole' Silver.

If everything is in good shape on your 240D, I don't think you'll need it.

BTW, if you're not already aware, if you add one of these tanks you have to have the proper radiator cap. The non overflow tank type cap does not have the valve which allows the flow to and from the tank.

I take it that you got past your pulley problems and have your car back on the road.

Best regards,


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Larry Bible
'84 Euro 240D, 516K miles
'88 300E 5 Speed
Over 800,000 miles in
Mercedes automobiles

I added the over flow reservoir to my 300D and it works fine (no coolant loss). I found some open space and tie wrapped the reservoir securely (I did not drill the body). I have done this for the last 20 years to several of my cars and have been very happy with it. Go to your local auto shop (Grand Auto, Kragen etc.) and purchase a radiator over flow reservoir (less than $10.) and install it. Make the laws of physics work for you not against you!

Reza

Carrameow,

SunDance gives good advice with a good tip, tiewrap it on to prevent drilling holes.

BUT, Don't forget to put on the right radiator cap, or it will do no good.

Good Luck,

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Larry Bible
'84 Euro 240D, 516K miles
'88 300E 5 Speed
Over 800,000 miles in
Mercedes automobiles