Mythos SLS Kompressor - blacklandy
Luftfederung - Instandsetzung SLS Kompressor, Magnetventile, Federbalg - blacklandy
Maintenance and repair of the Compressor. It is in german but a good advice.
Calibration without Testbook isn`t possible IMO
And 7mm is not too much difference.
But to get an easy OBD reader like Hawkeye or Nanocom is cheaper then the fuel for 2000km.
If there are no oil leaks check the oil levels.
Rust (but I think someone mentioned that)
If you have the choice take a look under the car for offroad damage
The pics are from a Bobtail, that might be slightly shorter then yours!!
And somewhere in the expedition area is a picture from the mess in my old Disco, with gas stove and storage
If your car is 2nd hand try if your ABS is really working! A piece of road without traffic, speed up and then make a full stop.Remove the loose things from the car in advance.
The Story goe on!
Today it`s rainy and not too cold. Everything works great. when I Yesterday left the car it was like the Titanic. Today in the Morning everything was great and still is.
Is that a sign that my car likes british weather or just a bad Connection somewhere?