I have recently bought a 1998 C180 automatic saloon, I am considering pulling a Caravan <1000kg. I asked the local Mercedes dealership for a price for a tow bar and they informed me i would also need an additional gearbox oil cooler. Does this sound right, i would have thought a 1998 gearbox would be able to handle this type of engine braking without additional hardware. Any other comments on towing with this car would be appreciated as i haven't commited to a caravan yet.