You have a trucker's diesel engine. It's the 335 diesel dorated down to 290 HP for long life. When you start It, let her
idle, moderately, to warm-up. Don't beat it at governed 2100 RPM, just to quiet the noisy low air pressure buzzer, until
you're given the cylinders, pistons, and turbo charger time to adjust to engine running temperature - about 2- to 5-
minutes, at least. Do the same when you shut her down - let her Idle to cool-off.
Your engine is equipped with a warning system for high cool and temperature and low oil pressure. Don't let it scare
you, if it goes off. Merely pull over to the side of the road, activate your hazard warning lamps, check your gages and
trouble-shoot the truck, Correction of the problem will turn OFF the warning system.