Is the cap on the suspension fluid tank on an '81 300TD supposed to have some kind of seal? Mine is weeping fluid all over the place and making a mess. It looks like there might be a groove for some kind of O-ring...anyone know what's supposed to go there?

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1981 Mercedes 300TD, 1994 Honda Civic Del Sol
http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png

You're right, it should have a ring/seal. You could certainly make one with a craft knife and a piece of scrap something...

Thanks, tarnbarn. Is it a flat seal or an O-ring?

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1981 Mercedes 300TD, 1994 Honda Civic Del Sol
http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png

Hey Orv,
It's a flat seal on my '81 TD. A round one might work though and are probably easier to source.

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1981 300TD "The Green Lantern"
1980 300TD
1983 300D Euro "China Cat"

Thanks. I may try cutting a new one out of some gasket stock. I've had some success with that sort of thing in the past.

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1981 Mercedes 300TD, 1994 Honda Civic Del Sol
http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png

Figured I should give my eventual solution. I couldn't cut a seal thin enough, so I used an O-ring from Lowe's that fit the groove in the cap. That fixed the leak.

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1981 Mercedes 300TD, 1994 Honda Civic Del Sol
http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png