Why leave a diesel running?
Hmmm, so high idle puts a load on the engine and avoids fuel from being washed into the oil?
- High idle does not put a load on the engine, it just keeps coolant flow higher to avoid overheating. It lso serves as an aid to charge the battery as
we know charging current is below 50% of max alternator output
- If that amount of fuel in the oil is noticeable the piston rings are already ruined anyway.
- Only non proper working injectors let a huge amount of fuel drip into the combustion chamber.
Idle is the poor people choice of engine preheating or powersupply. All others use gen sets for power supply or engine heaters (electric or combustion heaters) to keep the engine operational.
I wouldn't blame the Department, it's just time for a better truck from the government.
- High idle does not put a load on the engine, it just keeps coolant flow higher to avoid overheating. It lso serves as an aid to charge the battery as
we know charging current is below 50% of max alternator output
- If that amount of fuel in the oil is noticeable the piston rings are already ruined anyway.
- Only non proper working injectors let a huge amount of fuel drip into the combustion chamber.
Idle is the poor people choice of engine preheating or powersupply. All others use gen sets for power supply or engine heaters (electric or combustion heaters) to keep the engine operational.
I wouldn't blame the Department, it's just time for a better truck from the government.
Last edited by Deezel Stink3r; Apr 22, 2011 at 10:15 AM.
when im at work on a road call i never shut the truck off as a rule of thumb i dont wanna be stuck somewhere and my truck wont start tell em not to worry bout it and ull do ur job and tell them to stay the hell outta the way
Kick up the high idlle on your rig while sitting.When it's idiling it's murder on the dpf system. the soot builds up in the muffler and when the injector injects fuel, the muffler can't burn it properly.After a while, the motor will go into a limp mode.
And thank you for your service
Don't worry about the people complaining,they don't know squat.
And thank you for your service

Don't worry about the people complaining,they don't know squat.
Depending on the price of an engine heater diesel is cheap.
Savings will come in the long run depending on fuel consumption.
Typical fuel consumption of an engine heater:
1/4 gal per hour.Thats a buck per hour-sounds better,huh?
Savings will come in the long run depending on fuel consumption.
Typical fuel consumption of an engine heater:
1/4 gal per hour.Thats a buck per hour-sounds better,huh?
Im guessing you're referring to an engine heater that runs off of fuel and not electricity? Ive heard of them before, I think there's a guy on this forum that has one on his truck.
Seems to be a slight missunderstanding about my post. I said if your there at the seen and using your lights and whatnot even useing a genset that may be PTO driven if equpied will put the engine under load and you will ned to raise your engine speed to use such things. Yes things get curculated beter though your correct but high idle can help keep things at operating temp and can even help move more across the AC condesor and other things when the fan kicks on. Just an idle its self dosnt realy put a load on the engine.
Happens all the time and being an officer I always seem to get dragged into teh middle of it. Just put on a smile, talk noce and respectfully to them, and explain that the truck needs to idle to keep all your equipment ready to go.






