Holiday Neptune 2004, Owner'S Manual

Page: 45 / 416

DRIVING & SAFETY --- SECTION 2 • 45
NEPTUNE 2004
2
Left Turns:
• Do not start the turn until the center of the intersection is reached with
your hips. If there are two lanes available, take the right hand lane. A
car or driver on the left hand side is easier seen.
Ascending a Grade:
When approaching an uphill grade, try to assess how steep and long it is before
beginning to climb. Prepare early for long climbs.
Unlike gasoline engines, diesels do not necessarily produce more power by
pressing further on the accelerator! A gasoline engine will happily work at full
throttle (at least for a short period of time), but a diesel usually just wastes
fuel at full throttle. The power output from a diesel engine is dependent upon
the following:
• RPM - Every engine has a range of RPM where it produces power
most efficiently.
• Fuel/Air mixture - At a given RPM, an engine, even with the help of
a turbo-charger, can only "pump" a given volume of air into the
combustion chamber. This volume of air can combine with only so
much fuel efficiently; so it follows logically that feeding more fuel to
the fire will simply waste fuel.
Determine the ranges where the motorhome works best by driving long grades
in a way that temperatures will remain stable for the duration of the climb.
IMPORTANT SAFETY TIP: If the road speed degrades to the
point where the motorhome is moving significantly below the
posted speed, turn on the four way flashers. Take advantage of
pullouts if traffic is building. Once in the pullout, if there is
sufficient clearance for safety, take a break. Idle the engine to
allow the exhaust and the turbo to cool. While these are cooling,
the transmission also cools. Monitor the gauges.