I have just bought a w129 320 sl,the car has covered a genuine 15,000 miles,everything is fine except when I bought it,the hard top wouldn't release and one releasesd manually the hood wouldn't work.I found the pump in the boot and it was very low on oil.Once topped up everything worked but oil is being forced out the cap at the top of the pump resovoir.I realise that air being forced ou but think there may now be a fault as the leek continues after numerous lifts of the roof.