Thank you in advance.

Do the air springs on a D2 have to work over time if you are towing a heavy weight? (900kg trailer + horses... 2000kg total for arguments sake)

If so are there any precautions I should take in regards to the compressor / air bags ect.

The weight of the trailer will affect more the mpg and the power ... the tow hitch load must not exceed 250kg and there will be no probs...after the SLS did his job the compressor will rest... unless u have some leak or system fault