FUEL MILEAGE | Oil and DEF Consumption | NEW 3.0 Duramax Diesel 2023 LZ0
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- Опубліковано 27 сер 2024
- 2023 Silverado High Country 3.0L Duramax Diesel with Max Tow Package - fuel economy over 6000 miles
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I have a 2023 SIERRA SLT with the LZ0 and a 3.23 rear end. With about 3200 miles on the truck my overall hand calculated fuel economy is 27.6 mpg (no towing, truck is stock except it has an IDASH gauge). I changed my oil at 2900 miles and had an oil analysis done. It showed a soot level (in the oil) of less than 0.1%. I measured the amount of oil that I drained from the engine and it came to exactly 7 quarts. So I may have used 1/2 quart of oil during breakin. REGENS have ranged from 273 to 501 miles and DEF useage is about 2.5 gallons per 2600 miles. Hope this helps.
yes，argee that 。
Appreciate the video. It was nice to find someone that tracked real world fuel mileage. Although I really wanted a diesel, I am glad I didn't get one because it wouldn't have worked out economically vs the gas option. Diesel in my area is 40% more than gas, so it really doesn't make financial sense when you're comparing 25 mpg vs 17 mpg, and then you add in the little extras of owning a diesel (def, oil, etc.).
23 LZ0 max tow with 2500 miles. best fill up 28.2, avg 25.5. Tracked in Fuelly. Not used any oil yet.
Having a hard time finding a LZO max tow Silverado . I’ll keep searching
@@BearPapa49 I had to order mine. New best MPG is 28.6. Average up to 26.1.
I have the 23 max tow with 2000 miles. Gets great gas mileage. Towed a 2 place snowmobile trailer for about 500 miles and gets around 14 mpg doing 65-70. It sure gulps the def if you push the truck. Ideal is to keep the rpms below 1700 when your towing. Constant 2000 rpms and above triggers a def distance counter which displays how much def you are using.
Did you measure the increase in DEF consumption as compared to when not towing?
@@kaivonmortazavi8656 It definitely uses more def when your towing. I didn't measure how much, but my only guess is it's related to your fuel mileage. If you normally get 28 mpg not towing, and then get 14 mpg towing, my guess is your def will be depleted twice as fast.
I’ve got 3000 miles on mine and less than 100 miles left on factory fill def…I’ve towed a few heavy loads with two different trailers from 5k to 9k.
Excellent video and reviewed. Just purchased a 2024 1500 Duramax LZ0. Given the owners manual recommends the use of top-tier diesel and considering how scarce it is in my area, I am wondering what other Duramax LZO owners use.
I checked my oil with 600 miles on my trailboss LZO, it’s still a bit over full. but I was amazed at how black it was compared to my 2002 duramax which has never had black oil, I understand now they have egrs and emissions on all diesel engines over 25 hp but I was shocked it was black at just over 600 miles!
Keep in mind the special diesel oil GM recommends starts it life out as a dark greenish color right out of the bottle. Never looked like new golden colored oil.
Your 02 duramax should have black oil as well just not as quickly. With it being the 2002, you also don't have an EGR valve to deal with on that one. When I see a LB7 and it has super clean looking oil I go straight to checking for fuel contamination from those injectors !
Enjoy your new truck !
@@02v92tcd good point I haven’t changed the oil yet so I haven’t even thought of that.
I have 3,000 miles on my 23 AT4. Almost 23 lifetime mpg. I took a 1500 mile trip and averaged 27.1 mpg. No oil usage and def tank has 1,900 miles and only down 2 bars (well over half full). I have a 5,200 lb travel trailer that I haven't towed yet, so will be interested to see how it does.
What really good video. With so many instances of DEF consumption being reported I wonder If I would not start adding the cost of that with my fuel consumption bill.
Hey thanks for the research you do on this little duramax beast. I'm seriously considering getting a gt800 hd 3/4 or 1 ton frame and swapping in this lz0 where a 6.6 was meant to be. With some mods, and in an HD trucks with air bags and gooseneck, you know this little baby can pull 30k lbs. Up the Rockies.
It would be an efficient use of the engine for sure. I love mine. It's incredible.
Quite literally picked up my 3.0 AT4 today and on the way home doing mostly 75-77mph averaged just over 22. Hoping for some improvement after a bit of time. Also saw trans temps up with nothing towing in the 195-196 range. Worried me a bit.
That's pretty much normal mileage at that speed. Especially if you had any headwind at all.
My LZ0 sees 205-207 quite often in just normal driving, the LM2 did not get that high, even before the PPE trans cooler. My PPE trans cooler will be installed soon since we are going to get some warmer temps soon and I hate to see the high factory trans temps.
Enjoy your new truck !!!
The sweet spot for gas mileage is to keep it between 65-70. You should start seeing 27ish. I live in a colder climate, so my mileage may be worse than normal.
Also normal for tranny temps. My 2014 runs that unloaded all day. If I towed heavier loads, I’d install a bigger tranny cooler.
I picked up pretty much the same truck (standard bed and 20” wheels) a few days ago and so far with 130+ miles on it, mixed driving, my average is 27.5mpg. I have a lot of slower traffic that keeps me under 75 in most cases and I leave the start/stop enabled (actually doesn’t activate as much as I expected). So far I’m really impressed with the mileage.
I have the LZO on my ‘23 GMC AT4 and my mileage is nowhere near that. I average about 21 mpg on the highway. I’m in south Texas too so it’s not some winter mix. I guess the factory lift and tires make a huge difference.
Those are my next changes, so we will be able to compare later down the road
I also have a 23 1500 AT4 and I get 24-26 on country roads and 28-30 on highway.
Are you driving 80+ mph on the highway?
@GOFASTER69 your 4x4? How you getting that kinda mpg. ? Because im starting to think maybe everyone getting 21 to 23 highway with the At4 must have a lead foot🤣
@@slagle89 yeah, just be easy on the throttle, let the diesel torque do it's thing and cruise at like 65-70 on the highway.
I have a trail boss generally same fuel mpg
Normally trips bring 30mpg or better on level road hilly closer to 27-29
Interesting to hear that you’re hitting 30mpg. We are trading in our 3.0 Tahoe for a 3.0 Trail Boss soon and have been wondering how much of a hit we’ll see on MPG.
I drive soft on level roads u should get real good on mild hill momentum generally carry you
So far my 23’ GMC 3.0 with maxtow has been awesome. My truck is a Crew cab regular bed 4x4 so longest they make. Average 26-32mpg. Has not used any oil. But man does the oil get dark fast
Dark oil is just part of it being a diesel, so don’t worry about that.
Your truck is doing great! Good to hear!
If I doesn't look like black ink, something is wrong. Even when the oil is just changed.
@@DemonWorks Just remove the egr permanently and the oil will stay new looking for a long time I have a 6.6 without the egr and even after 8k on the oil looks clean
@@jeremybroderick9465 yeah, not that easy for these trucks 😬
I bought a 2021 with the 3.0. It was eating 2 qts of oil every 1000 miles. After a year of oil consumption checks every 1000 miles they decided to change out a valve cover with a bad baffle inside. The oil eating went away and it was back to being a "good truck". But that's when the next batch of problems started. Spraying coolant out of the inter cooler, leaking oil, a particulate filter that's so clogged that it backs up exhaust smoke into the cab while driving. They have had my truck in and out of the shop coming up on 8 months now. GMC is not willing to buy my truck back.
Very respectable mpg given that almost 1/2 is city miles. With regards to DEF it looks like its about 2.5% of total fuel gallon consumption give or take. Do any of the miles, DEF, and gallons of fuel consumed include towing miles or is this strictly driving the truck only? Thanks for the video and info.
zero towing miles. A little worried to see what happens when I do tow !
I found your DEF usage seems really high. My ‘22 LM2 Tahoe is at almost 19,000 miles and I’ve only added 7.5 gallons of DEF. Getting ready to add another 2.5 gallons today because it just dropped to the last two bars on the gauge.
Yeah, the new LZ0 engine’s definitely use more. My LM2’s never used this much !
@@DemonWorks I think this is an issue. I hope GM sorts it soon. I am using more than double the def in my LZ0 than my LM2 did. Same 70mile commute everyday...
It is using more than my LM2 did towing a 26ft enclosed trailer...
@@DemonWorks There are 2 DEF injectors on the LZ0 as opposed to one on the LM2.
@@NMTRUCKER yeah. And 2 smaller filters rather than one large. Was hoping it would be more efficient.
I have just over 3,500 miles on my LM2 and my def gauge hasn't moved....
Thanks for posting. I really enjoy your efforts. What is you max trailering weight for a bumper pull trailer?
13000lbs
Buy one. They are amazing. Just got a Silverado with LZ0 4X4 & CREWCAB. Love it!!! ❤️ ❤❤❤🎉🎉🎉🎉🎉🎉🎉😊😊😊
I wonder how your truck would do if you added a 3” level kit and 22x14s with 33s or 305/40/22
We will never know, sorry.
How high can you adjust the torsion keys on that Chevy
@@jaluco02 no keys. That’s on the 2500
Wondering what everyone thinks about how often these trucks should do a regen? I have the 2022 RST Z71 with 16,000 miles and just used a scanner today and it says its done 32 regen's. Is that normal? Most of my driving (95%) is Highway miles and so far I'm averaging 30 mpg. my best on the 450 scale 31.5 mpg.
sounds accurate !
GM expects heavy oil consumption during break-in because I heard they overfill it by one quart at the factory. Apparently, consumption should settle down by 5000 miles.
What's the payload rating on your truck? I'm considering a well equipped LTZ duramaz for a future truck camper rig, but It needs to be able to carry at least 2500 pounds.
correct on using oil during break in, I discussed that here: ua-cam.com/video/F0s3cIKFH1c/v-deo.html
just shy of 1700 for my payload and I am max tow.
I have an 2021 sierra with an LM2 with about 80,000 miles on it. So far its been great. I've noticed occasionally when the truck is warming up while driving down the road, I will get a spike in water temp to around 235/240 then an immediate decline down to the normal 210/215 it usually lives at. This happens infrequently and I have only actually have noticed it a handful of times. This morning I noticed the fan kicked on for just a couple seconds, I looked down and saw the temp around 240 and then it immediately dropped down to normal level. I was towing about 4000 lbs but just putting along at about 50mph only a few miles away from home. it was around 37 degrees out. It seems like this only happens when it is warming up, like its getting hotter and blows right by its intended temp for a second then comes back down. It seems like I might have a sticky thermostat but maybe this is some intentional emissions thing to get the truck up to temp faster or something. I don't think this has ever coincided with a regen as I can usually tell when it is actively regenerating by smell and sound. I was wondering if you ever experienced something like this.
Just got a 2023 6.6 GMC Denali. What are you running for DEF? Do you use the AC Delco stuff?
I do use the delco stuff from my dealer. When not using that, I will use blue def from Costco.
@@DemonWorks Thanks for the reply. You talked me into a Duramax however after looking at what the payload and tongue weight capacity’s were on a half ton I would be overloading it. So I went for the big one. Just getting ready to road trip it from Michigan to Florida. Any concerns about running a brand new truck that far? I’ve only got 350 miles on it. Thanks again for the great content.
A k and n filter will void your warranty and suck your engine full of dirt. There is nothing to gain with the world's stupidest air filter.
K&N marketing is the best of the best. Idk how they keep convincing all these morons to keep buying their products. They filter horrendously and do not increase performance or fuel economy.
So it’s actually normal for it to consume oil? I have a 22 refresh LM2 and it drank almost 2 qts for ac delco mix but I’ve been on amsoil since and I now only lose 1 qt. I’m at 20k miles of 150 mi daily commute plus 10 miles of rough oil field terrain driving .
For the LZ0, they came overfilled by 1 quart, so I would say yes, it is normal for it to consume oil during break in.
The new LZ0 has tighter tolerances than prior generations. Less oil consumption. Use what's recommended.
Did it ever stop consuming oil?
Yes, after break in the large loss was gone. Used just a little after that but to be expected with the way the system is designed.
how many miles do u get on a full tank of gas ?
500-550
What def do u use ?
Ac delco
Do u think the banks helped with fuel economy?
none of my current banks products installed have assisted in fuel economy.
Did you change you fuel tank? When my 23 1500 LZ0 is full, my estimated has been low 500 miles?!
Stock tank, i'm just getting better mileage than your truck is at the moment.
When is new updated lzo coming out for Tahoe / suburban????
My understanding is a late 24 as a refresh model or the 25.
what ia a fuelie app?
Wow that’s a lot of oil burn in 3000 miles on a new engine smh GM
it's part of break in....
I got a quick question. I noticed my coolant was almost bone dry. I have been smelling a sweet smell over the last few months. About 8,000 miles ago I got a oil analysis and it indicated no coolant in the oil. Well I filled my coolant up about half a gallon recently. I have not noticed any leaks on the ground. Should I take this to a dealer asap or just pay attention to the coolant and if it drops take it to the dealer? I was wondering if anyone with the LM2 has had this issues? I am going to do an oil change here soon and send in for another oil analysis. Any ideas on what could be happening?
Take it in to the dealer and get it tested, let them know you have been adding coolant. Probably leaking out of your water pump.
@@DemonWorksk, I appreciate it. I’ll keep you posted! I did have engine temp spikes over a year ago. Really random spikes for a min or 2 I have them posted on my page. I wonder if that spike was an indicator. GM decided to replace my ECM and it has still spiked but not to the severity as I initially did.
Where do you find the fuel economy best on the digital dash? I believe my ‘23 LZ0 Trail Boss doesn’t have that display.
You should definitely have it. Check your settings in the dash to see if the screen is disabled
Is there anyway possible you can do a 0-60mph time? I would LOVE to know what it does with 373 please…
Absolutely! Just did that in my previous video of the K&n install. I don’t recall the exact numbers but I am up in elevation (Utah) and I’m running winterized fuel. So, I will do another run when I’m on #2 diesel.
@@DemonWorks thanks man. I have a 2020 and running 9.6 0-60mph. Love the engine but that’s pretty slow. However, running 33” 10ply tires and heavy canopy. Love yo see what yours does. Also I’m at sea level also running winter fuel.
@@outyxt800 looks like mine was 7.89 from the dragy app
@@DemonWorks thanks man, was really hoping for low 7’s with the 373 gears. Still not bad, maybe I’ll get low 7’s since at sea level.
I have a 2023 Sierra diesel 3.0 LZ0 elevation getting 13 MPG I have 400 miles on truck . The truck is completely stock.
What kind of driving are you doing?
My best 50 miles with the LM2 is over 50mpg
DIGITAL DASH.... it goes out and you are toast. Ill pass.
How so?