Why leave a diesel running while filling it up?

[dblack1]

Truth..... This man speaks it!

6.0's don't like anything below 50 degrees
7.3's can deal with high 30's and start fine
5.9 cummins 12v's, 24v's and cr's fire up at any temp with zero issues.

The three duramax powered trucks we have are a pain in the ass when temps drop around freezing.

My 6.0 would start in sub 30 degree weather easier than my 7.3.

My 6.4 will fires right up in sub 30.

Dodges don't seem to care how cold it is if the batteries are hot.

[8mpg]

I never saw the point in shutting it off...

[gearhead78]

I was always told do not shut off a turbo right after you are running it and let it idle a minute of so to cool down the oil in the turbo a little. For that reason I just let mine idle while fueling especially if I have a trailer on it and its been running hard.

[Broncojohnny]

I never shut my car off when getting fuel. I'm sure it was important in the 1950s when cars were made out of old soup cans and if you lifted the hood at night it looked like a christmas tree in the engine bay.

[payne5757]

I was always told do not shut off a turbo right after you are running it and let it idle a minute of so to cool down the oil in the turbo a little. For that reason I just let mine idle while fueling especially if I have a trailer on it and its been running hard.

Same here, but when my egt's stay around 4-600 degrees while cruising around unloaded, I dont worry about idling till the turbo cools. I always let the temps lower to below 300 after towing tho.

[kidcapri]

I was always told do not shut off a turbo right after you are running it and let it idle a minute of so to cool down the oil in the turbo a little. For that reason I just let mine idle while fueling especially if I have a trailer on it and its been running hard.

DING, DING, DING.........We have a winner!

That is the correct reason for not shutting one down after running it. However, it's obvious that it is not the reason why most of you leave yours running.

[8mpg]

DING, DING, DING.........We have a winner!

That is the correct reason for not shutting one down after running it. However, it's obvious that it is not the reason why most of you leave yours running.

dont you think if all the manufacturers thought it were that important they would have factory turbo timers? While I believe its good to cool a turbo, I really dont think it matters.

[Strychnine]

dont you think if all the manufacturers thought it were that important they would have factory turbo timers? While I believe its good to cool a turbo, I really dont think it matters.

It's only important if you're in a hot shutdown condition which the majority of drivers will never need to worry about.
For a hot shutdown (high load / speed for an extended time directly to no load ready to kill the engine) it's recommended that there be a 3 minute idle period (5 minutes for larger engines).

Guys who are in this position often should be aware of the issue and should "know better" than to shutoff and everyone else just goes on about their business because it wont ever affect them... and the OEMs save money by not providing something needed by a small minority.

[sig239]

That's kind of open ended. Fuel consumed during startup = fuel consumed idling for how long?

Mine Burns just shy of one gallon of fuel. per hr at idle. Most big trucks don't like to shut down because cooling and heating up is hard on them. That's why if you don't get a million miles before you need a in frame some thing is wrong.

[sig239]

Here ya go high and mighty Cummins lovers...... and I quote myself for those that couldnt READ the first go round!



The 8 gigantic snow plows we ran in Philly that had Cummins in them absolutely would not start without ether or working eaters unless they had perfect batteries. Yes they will start if everything is ideal and that goes for a stroke as well. Will they start very well or run worth a shit till the motor is warm?? Fuck no!! Assist I said!! They were designed for that and thats exactly what I was saying.

I know there is absolutely nothing wrong ever ever with the great Cummins... lol People deliberately post cold start videos on youtube to show just how rough they run in sub freezing temps and no heater. Even the King Midas touched Cummins

Hell if it wasn't for Dodge they would be out of business. Only big company's put them in class 8 trucks because they get them so cheap.only One I have drove spent more time in shop than the road, not to mention shit for mpg. My dd15 for the last 3k gallons has had a average of 8+. And that's even been running the north west with heavy loads.

[Cooter]

my 03 Cummins can idle for 6hrs and not even budge the fuel needle... that's one of the great things about a diesel!

[Cooter]

Hell if it wasn't for Dodge they would be out of business. Only big company's put them in class 8 trucks because they get them so cheap.only One I have drove spent more time in shop than the road, not to mention shit for mpg. My dd15 for the last 3k gallons has had a average of 8+. And that's even been running the north west with heavy loads.

man, I agree... I love my Cummins trucks, but I love them because they do what I need them to.

I'm not a brand loyalist by ANY means. I've never had any interest in anything above what a little B series could do, BUT, if I was looking at a Class 8, I'd definitely shop CAT and Detroit!

whatever gets the fucking job done! people who claim to bleed one color or another or get tattoos of a brand that they don't own just fucking baffle me

[sig239]

Sucks that cat has gotten out of the class 8 market.

[Strychnine]

Hell if it wasn't for Dodge they would be out of business.

LMFAO!
Believe it or not the world does not revolve around tractor-trailer rigs.
You think a 78% market share in a field as intense as oil and gas pressure pumping (ie. frac rigs, at $225,000 per engine) is just a fluke?

[Strychnine]

Sucks that cat has gotten out of the class 8 market.

They should have invested more wisely in emissions R&D. ACERT sucked and the technology that was required to meet 2010 on-highway regs (that most everyone says they lacked) will be required off highway (ie. dozers, graders, etc) in 2014. For their sake I hope they bailed bc of market conditions and not a lack of tech because if they don't have a solution by now life will really suck when Tier 4 Final regs take effect.