Originally Posted by Raptor
While pulling a 28 foot travel trailer for the first time I noticed that the L/100K went screwy, fluctuating from 20 to 35L per 100K and sometimes even beyond 80L/100K)
Also, My DTE which should have been near 800 Km registered only 440. We ran through some very heavy rain showers, but I can't see how that would cause any problems.
This sounds normal to me especially when you are towing. The DTE is calculated based on the L/100K the truck is averaging. This will increase especially when towing. I have a 30' travel trailer which weighs about 7000lbs. While towing, my DTE will be very close to what your truck was showing and L/100KM can fluctuate between 25 - 35L/100Km depending on head wind, hills, etc... If I am pushing it hard up a hill, it climbs REAL high!
Once I have been driving for awhile NOT towing, the DTE will climb back up to normal range.