On 2 December 2012 16:38, SUSANC <SKCHANDLER4@hotmail.com> wrote:
We have had two motorhomes based on the 2.8jtd Fiat and both of them ranI'm not a Fiat man, but using my Land Rover experiences there will be
The gearbox may have different ratio gears.
The axle differential may have a different ratio.
The tyres may be different sizes, so their circumference would be different.
Then the speedo could be wrong. Try using a GPSr to display actual
speed over the ground. Used correctly, a GPSr will always be more
accurate than a speedo.