Home Forums Hunting & Shooting Hunter's Campfire 3.0 Duramax, lets talk.

We have similar boats, what kind of mileage when pulling the boat?

Looking at a new vehicle in the near future and the GMC 1/2 ton with the 3.0 really caught my attention.

Who has one?

Mileage? rated at 22 and 26, others talk of closer to 30 real world.
Mechanical issues? Its been around for 2 years now, not exactly long term but whats the word on the street?
looks like an oil change on this motor is about double at the local dealer, 150 bucks????
DEF fluid, how much we paying per gallon and approx what cost per tank of fuel or per MPG?
Any starting issues in cold weather? lowest I might see here is -25 at night once or twice a year.

According to the salesman, about 8 months out, Wowza.

I have a 21 GMC Sierra AT4 with the 3.0. My fuel range per tank is somewhere between 800 to 820ish per tank. I usually fuel up close to 750 miles. I get between 30-34 mpg driving back and forth to work about 84 miles a day.

Fully understood on the added expense with a diesel.

Regarding the noise on the 3.0, very quiet for a diesel, surprisingly quiet.

Ken I think you and I texted before. It was about plumbing if I remember correctly. I had pipes that apparently froze and swelled and had a guy make me .686” inside diameter fittings.

Kenneth;
Good afternoon sir, I hope the week was a good one and this finds you well.

The 2.8 Duramax was, as far as I am aware, an entirely different engine than the inline 3.0 liter 6 cylinder.

Here's a blurb I found online regarding the 3.0.

"The Duramax 3.0-liter diesel uses a lightweight aluminum block and cylinder head to reduce mass, though the cylinder liners are iron. That’s still a 25% mass savings over a comparable cast-iron block. The main bearing caps are iron, as well, which protect the engine under high combustion pressures while a deep-skirt block (where the block casting extends below the crankshaft centerline) contributes to the strength. Also adding stiffness, an aluminum lower crankcase extension is attached to the main bearing caps."

To begin with my thoughts on that, I'll say I began running diesel equipment on a reasonably large farm in the mid '70's and have been involved with diesels from that time on in varying amounts including Kubota, Mitsubishi, VW, Cummins, Ford, GM Duramax, Perkins, Cat, International and Mack engines - off the top of my head.

My last place of employment before retirement was a GM dealership and I try to stay up to date on what the newer ones are doing, sometimes through a family member who is a certified diesel mechanic.

If I was shopping for a new diesel pickup, the very last thing I'd hope it to have would be an aluminum block for a plethora of reasons, not the least of which is that diesels need heat to burn efficiently and an aluminum block will not retain heat like a cast iron block will.

When I worked at the GM dealership, I got to see first hand how the big 3 dealers struggled with the parent companies attempting to make the new emissions strangled diesels keep running.

I have nothing, as in not one good thing to say about the newer diesel engines in their factory state.

Sorry to be negative, perhaps I'm entirely too jaded from my experiences and it's entirely possible that GM has engineered this new diesel to be perfect and wonderful in it's first edition.

Hopefully that was useful to you or someone out there sir, good luck with the truck purchase whichever way you decide.

Dwayne

30-34 mpg?
11 to 12 hours cruising range.....
oh hell.

Ford is dropping their 3.0 powersmoke already because they have high hopes for their powerboost hybrid. I went with their new hybrid f150 because I liked the idea of the 7.2 kwatt generator built in. With the Biden regime in office the generator may come in handy soon.

I was talking to a farmer the other day that was trying to get a diesel half ton for himself and a diesel yukon for his wife. He said he has 40,000 gallons of off road diesel he bought last year for 89 cents a gallon. Diesel stores long term much better than gas. I guess he's willing to bet they won't check the fuel in his wife's yukon for color.

Bb

Ford is dropping their 3.0 powersmoke already because they have high hopes for their powerboost hybrid. I went with their new hybrid f150 because I liked the idea of the 7.2 kwatt generator built in. With the Biden regime in office the generator may come in handy soon.

I was talking to a farmer the other day that was trying to get a diesel half ton for himself and a diesel yukon for his wife. He said he has 40,000 gallons of off road diesel he bought last year for 89 cents a gallon. Diesel stores long term much better than gas. I guess he's willing to bet they won't check the fuel in his wife's yukon for color.

Bb

I've owned a diesel truck since 1985 and haven't been checked. I run bio diesel, just mix a gallon or two of used engine oil in your diesel tank and that's that.