I got ya . I had already figured it was a motorhome , one of you're pictures gave it away . I recognised the body moulding , or rather the airvent , pretty much the same as mine . Mines a Hymer too , 584 , mechanics wise , they are more or less identical to a standard van . Converters use the floor pan , key differences are the lighting , and wiper motor position , but that's only on the A class !
C class is pretty much fully intact .
Oh and yeah mines a left hooker as well . Chances are you've got the same header tank as me , i'd be interested which bolt was causing ya grief . I changed mine , with no problems at all . Only three bolts hold it in .
Hmmm left hand side you say Could be your dip stick fitting leaking , they're plastic and just push in , with an "O" ring to seal it . I replaced the whole thing on mine , i was a bit shocked to discover it was plastic , sourced it from Coastal Motorhomes , Ringwood . But you also have the oil filter , and oil cooler sticking out forward . That's the bit at the opposite end to the filter , i've heard of a couple giving up the ghost recently , but still rare . The pipes are pretty much all water , except for the hose i mentioned before , that goes to the dip stick . That's for crank case pressure , and the hose is the drain . The plastic box i also mentioned pushes into the block , again with a big "O" ring . The spill could be running down the block , but normally when it hits the slipstream it will flow back . I found mine leaking purely by accident when i was working on the oil cooler pipes . Just replaced the "O" ring , bit of a bitch to find though .