[Vwdiesel] Oil Light/Buzzer

[Tyler "Casioqv" Backman]

Then why do 95% of semi trucks use cardboard, or some sort of bra to
block cold air from getting to the engine bay in cold weather? The
devices they use usually have different sized flaps that they can open
and close to regulate the amount of air reaching the engine bay. The
stock thermostat, which is likely 170 degrees or so in my suburban will
certainly never open when I am driving in sub-zero temperatures with no
load on long flat or downhill stretches. You are aware that diesel
motors take a very long time to warm up (if ever) even in warm weather,
if just left idling with no load, correct? Well, descending down a long
downhill stretch, or even flat land when unloaded put so little stress
on the motor that it can't create enough heat energy to combat that lost
via convection, conduction, and radiation from the engine block in
sufficently cold temperatures. The engine block actually has quite a bit
of surface area. Your watercooled gasoline engines almost always produce
enough heat to keep the engine warm in cold temperatures, and heavy
diesel equipment is not subject to the high airflow velocity in the
engine bay that a vehicle traveling at 60+ mph is.

Harmon Seaver wrote:
>     Then you don't have the proper thermostat in them. My water-cooled vehicles
> always reach the same temp Winter or summer, and I've owned a bunch of diesel
> heavy equipment that did as well.
>