1998 diplomat Cummins 24v 5.9
I make the same trip to Orlando every other month, filling up in Georgia on the way down and in Orlando on the way back back. I don’t know the numbers but going by the gauge my fuel consumption has been consistent on every trip. On this trip I filled up in Florida and used a quarter tank more on the way back, it seemed like power was down a little, taking more boost than usual on the hills. The only difference was that this time I filled up with diesel efficient fuel at Mobil. The engine was also running 15-20 degrees hotter than usual but not in the overheat range .fuel filter and air filter were changed before this trip, also it was at night so I couldn’t see any exhaust color change.
Any ideas?
I make the same trip to Orlando every other month, filling up in Georgia on the way down and in Orlando on the way back back. I don’t know the numbers but going by the gauge my fuel consumption has been consistent on every trip. On this trip I filled up in Florida and used a quarter tank more on the way back, it seemed like power was down a little, taking more boost than usual on the hills. The only difference was that this time I filled up with diesel efficient fuel at Mobil. The engine was also running 15-20 degrees hotter than usual but not in the overheat range .fuel filter and air filter were changed before this trip, also it was at night so I couldn’t see any exhaust color change.
Any ideas?