I went back and fixed it.

Even with diesel having a flash point ~55^oC, measures to mitigate spark and static charges with appropriate bonding/grounding is advised. See hazard and safe handling sections in the attached Safety Data Sheet.

Mike

Documents_MSDSVendors_2022_May_28_09-29-39-287_AM1.pdf

Another...

https://www.valero.com/sites/default...ev2_5-14_0.pdf

Question about Diesel engines? When I travel, I only go to big truck stops where it is easy to pull the fifth wheel thru. All the truckers leave their engines on while fueling - but only diesel being pumped. When I asked a trucker, he said the Diesel engines get so hot that you have to let them idle for 30+minutes before shutting down to cool them off - he said he never shuts his truck down until he’s done with the run - maybe 5 - 7 days. He said that’s why you’ll hear the diesels running all night at the truck stops. I looked it up for my little 2500 Dodge diesel and basically got the same info - never shut the engine down after towing until it cools down - maybe 10 - 15 minutes. Is this true?

One thing to consider, is what do you do when you get to the campground? If yours are anything like the campgrounds here, you drive slowly through the loop to your spot, back the trailer in, drive it up on blocks / Anderson levelers / wood to get it level, un-hitch, drive the truck away from the trailer, and so on. IMO, those activities would be fairly light on the engine, and give time for oil to be circulated and cool everything down, which I believe is the reason for that recommended idling. Just my thoughts

Guest -- What's your take on Cheryle 's question?

When running down the highway, a turbo diesel's turbo is spinning in the tens of thousands of rpms. If you are running down the interstate @70mph then stop for fuel, let it idle AT LEAST five minutes. When the engine stops, oil flow stops. Those turbos take a little while to spin down and the bearings are hot. Stop immediately and the hot bearings will burn the oil because it is not flowing. Not good for the bearings or oil. But putting through the CG as Stephen says is the same thing. Synthetic oil helps with the burning part as well.

Thanks for the good ideas and I do use synthetic oil. Much appreciated!

This question was hotly debated at work. At the time we had multiple trucks with different engines. Each and every one had a section in the operators manual on cool down. We had everything from Series 60 12.7l Detroits (pre and post EGR) 6V92 and 8V92 detroit 2 strokes, 5.9L B series Cummins, MBE900 series Mercedes, 6.0L Ford Powerstrokes, and a couple of Duramaxes. Without exception each one addressed a cool down procedure and the reasoning for it.
There was always push back about taking a few extra minutes to idlie the truck down when returning from a call. I finally pulled the manuals for every type of diesel we had and commenced to making copies. The next training we had on trucks every person got a package with the pages directly from the manuals. A few people still scoffed but my take was always that "These are the people that designed, built and warrantied that engine, do you think you know more than they do"

Well dang--if all else fails RTFM!

Yoda and all others with a Ford 6.7 -- check out what the manual says about our trucks.

Interesting
In a way I am lucky as it takes 3 minutes to drive our subdivision road, basically at idle (below 20 mph) and then I have a habit of always waiting another minute before I turn off. I will now need to rethink what I do fueling up - Maybe that's why the big rig folks don't shut down when fueling. I don't think I have the shut down timer option, but I will definitely look. I was told on shut down to choose external sensors so the alarm wont go off if there is a bug/miller moth in the truck.

Keith

Well, I generally just shut down the battery switch when fueling. To me that should shut down anything propane or with auto igniters, am I wrong? In aviation we always grounded the fuel system and aircraft with a cable to bleed off static every time. Most of the static that is a problem when fueling is created by the fuel flowing through a hose rather than a surface charge from a vehicle, though there is some disagreement on this issue. As for Diesel engines, turbos, both diesel and gas the spool down of the turbo's can take a while thus the suggestion to let them "cool". While I am not an expert in all things engine, after watching a lot of oil, engine and turbo gauges over the years I have seen that after a hard run an engine brought down to near idle tends to get warmer over the first couple of minutes due to a reduction in cooling flow wether it be air, oil or coolant due to heat soak of the metal, then cooling begins but slowly, am I wrong? The coking of turbo bearings is much reduced with synthetic oils in my opinion. I feel that no engine should go from working hard for hours then just be shut down. As for leaving a diesel running for days that just seems old tech to me, most engine wear occurs during the first 5 seconds of start up which I believe was why many trucks were left to run. My self if I had a diesel truck I would shut down shortly after stopping, to mitigate that I would install a pre-oiler instead of wasting fuel, polluting the air and irritating those around me.

Dave

Three times in my lifetime I've seen the auto shut off on gas pump fail to turn off. Two times on other folks and once when I was washing my windshield. No RV in my case. Its this condition that the fuel vapor can have a high enough concentration to be ignited by the electronic ignition or the flame of a refrigerator or other appliance. So its best to shut off the appliances and even the battery switch for that matter before approaching the pump.

So one may say that they will stay at the pump and watch for this but others around them may not and that can be an issue.

Mithbusters proved cells phones cannot ignite normal vapor produced when fueling and even fuel spills. But they are still electronic devices and is why its not recommended to use them at the pump. Smoking at the pump? Well they may win the Darwin award some day.

Jim

Lets go back 50 years in the heavy trucking industry. Starters were direct drive, extremely expensive (all diesel parts are), and was heavy and difficult to replace. Heavy trucks with turbo chargers as mentioned after pulling for 6-8 hrs non stop will have oil temps in excess of 200F ( more like 250F+) and the turbo runs on the turbine side temps ranging from 500F to 1500F. Long hard pulls heat soak the turbo charger (oil and sometimes water help to cool the components) which can lead to failure. Oil technology has also increased over the past. Modern oils do a much better job on startup protection than in the old days (another reason heavy trucks idle).

Modern trucks are a lot better. Starters are gear reduction, lighter, more efficient, and much more reliable. Letting them Idle all night is to keep the creature comforts of AC and HEAT for sleeping. Modern trucks can be equipped with APU's (generator packs essentially) to keep the sleeper comfortable for sleeping.

Leaving the truck idling while fueling is more of keeping the AC running and quick ready to move when the pump becomes available and to move out of the way. Think about the fuel island, only the fueling trucks is covered (barely in most cases) from sun.

Typical engine maintenance was 300k the engine got main bearings, 600k mains again and cam bearings, 900k in frame (piston liners, cam bearings, main bearings, etc). So leaving it running was to help decrease the intervals between maintenance cycles. Newer oils bring these maintenance intervals out a bit.

Chevy (GM) has a statement about this when towing with regards to high altitude (we live above 6000 ft and travel to higher altitudes) and idling. It seems it doesn’t matter whether it is gas or diesel.
.

It's always a good idea to allow any vehicle to idle and cool down after towing or a hard pull.

The GM diesels will have this feature built in.

Jim