6.2 Unicorn
Logistics Pro
Joined: Apr 2000
Posts: 4,334
Likes: 306
From: Mills River
We were at Huntington Beach State Park in SC early last week:
Regards,
Jim / crewzer
Posting Guru
Joined: Mar 2018
Posts: 1,962
Likes: 11
From: Fairbanks, AK
Hmmm an edge sport. Yes that is a beast. This is one of my cars after the builder got finished with the motor the first start. Need sound and this one WILL set you back in the seat.
I am about performance so that is why I have the oil burner period. Cost is not a concern but extended idling in hot desert at the ranch is more than pulling. If I lived in Alaska---yes maybe a gasser...
https://www.ford-trucks.com/forums/1...l#post18288971
I am about performance so that is why I have the oil burner period. Cost is not a concern but extended idling in hot desert at the ranch is more than pulling. If I lived in Alaska---yes maybe a gasser...https://www.ford-trucks.com/forums/1...l#post18288971
And to be clear, I don't poo-poo the 6.7 diesel. It's a heck of a platform and has it's place. I just don't like it when guys on either side start whipping out these completely false numbers or otherwise try to make themselves feel good about their purchase. My situation is very specific - I'm extremely picky and know what I want. Side note: I also run full synthetic in my 6.2 gasser. Not only to hopefully increase engine life, but because we do cold weather camping and the truck sometimes gets started after sitting for days at temps well below 0 F, without being plugged in. I need to know my rig will always start, w/o a bunch of work or the need for a generator to warm it up first.
Posting Guru
Joined: Mar 2018
Posts: 1,962
Likes: 11
From: Fairbanks, AK
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
Warbird---After thinking about this more there is no question if I was in Alaska or maybe Buffalo for example no question it would be gas for me. Reliability if nothing else---never have to worry about frozen DEF for example.... Yes I know there is a heater...
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
Frozen DEF is no problem - it's frozen fuel that causes the problem! Found that out last year. I love these trucks, gas or diesel. I've had both, diesel for now, maybe gas next time. 7.3L gas engine is pretty interesting. But the 6.2L is really a great engine.
Posting Guru
Joined: Mar 2018
Posts: 1,962
Likes: 11
From: Fairbanks, AK
Yeah, I have buddies who've had their diesel gel up on them. Heck, the last really cold winter we had probably 10-15 years back, a bunch of people's home heating oil started gelling up and their homes started freezing up. It hasn't been that cold here in a long time, tho.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
I thought DEF became frozen solid at 10 degrees and slush about 12?? Know it has a heater as the fuel does -- my point was in cold cold be nice not to worry about that issue...
Where I go in NM MAY get into single digits a few times a year but in DFW not hardly ever.
Leave the truck out overnight at a hotel say -10 below then have to drive 500 miles in that temp or worse could get sporty...….
Where I go in NM MAY get into single digits a few times a year but in DFW not hardly ever.
Leave the truck out overnight at a hotel say -10 below then have to drive 500 miles in that temp or worse could get sporty...….
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
I thought DEF became frozen solid at 10 degrees and slush about 12?? Know it has a heater as the fuel does -- my point was in cold cold be nice not to worry about that issue...
Where I go in NM MAY get into single digits a few times a year but in DFW not hardly ever.
Where I go in NM MAY get into single digits a few times a year but in DFW not hardly ever.
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Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
Now, if you run out of DEF, or the DEF is deemed to be poor quality or "not DEF" (such as water), then your truck will be idled.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
DEF is not part of the regen process, so not sure what you mean there. Some trucks have the SCR (DEF) mixer tube ahead of the DPF; some have it after. On our Fords, it is before. During regen, the goal is for maximum exhaust temps to cook the particulate in the DPF. Injecting an ambient-temp liquid into the exhaust stream before the DPF would serve to lower temps, so I believe DEF injection is paused during regen cycles.
Now, if you run out of DEF, or the DEF is deemed to be poor quality or "not DEF" (such as water), then your truck will be idled.
Now, if you run out of DEF, or the DEF is deemed to be poor quality or "not DEF" (such as water), then your truck will be idled.
Fleet Mechanic
Joined: Jun 2011
Posts: 1,865
Likes: 34
From: Annandale, VA
I have high hopes for the 7.3L and 10 speed. Unless there are signficant changes to diesel emission systems, fuel costs or the 7.3s performance / reliability....I can easily see it being what's in my next truck (if it really saves 8-9k in purchase costs).
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
GOOD LORD Yes! The DEF is not part of the regen in the "engine" however, is injected into the exhaust to clean out the particulates which the regen adds fuel to make heat to burn and clean out the filter. It would stand to reason that and actually Cummins delays this for an hour(allow the DEF heater to work) if below 10 degree at start, not having DEF for 500 miles would overload and trip sensors putting you into limp mode as if there was no DEF present ie run the tank out. I do not think the regen process will take place with no DEF in the system. Does that make sense?? Maybe someone with more knowledge can explain better.
Now the EPA is very strict about NOx (see VW TDI) and that is why your truck will idle if you run out of DEF or run non- DEF in the tank. I don’t believe your truck will be idled for frozen DEF because of failed heaters, but I could be wrong. I see no reason a regen couldn’t happen without DEF...my 50hp Kubota tractor performs regens same as my truck and doesn’t use DEF at all.
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Cargo Master
Joined: Dec 2003
Posts: 2,182
Likes: 7
From: Saint Augustine, FL