Duramax Diesels Forum Truck of the Week
  #226  
Old 08-29-2018, 06:53 PM
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I had one for 56k miles and yeah I loved it too, it did seem to take def a little to regular and I didn't even tow with it... I would have over 100k miles on it now and no warranty so kinda glad I got rid of it when I did..
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  #227  
Old 08-30-2018, 09:51 AM
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My 16 has only used about 20 gallons in 30,000 miles. Those L5p suck down the hog piss...
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  #228  
Old 08-30-2018, 10:23 AM
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Originally Posted by NC-smokinlmm View Post
My 16 has only used about 20 gallons in 30,000 miles. Those L5p suck down the hog piss...
For some reason I thought was deleted
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  #229  
Old 08-30-2018, 12:49 PM
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use of the DEF is really going to be dependent on your right foot and driving conditions. You guys should know this . The cummins we had was 1/2 to WOT the whole trip and turning 2100-2700rpm running through decent amount of hills and elevation change. averaging 8mpg explains that.

My dad has 55k on his 15.5 LML and has put about 20-25 gal in but he doesnt race stop light to stop light and alot of his drive from and to work is cruising 50-55mph. So truck is running lower rpm, doesnt have a bunch of wind resistance, and engine isnt working that hard. Its jsut like you mpg for diesel. you can run a ton of diesel through your truck in 300 miles on a 34 gal tank or you can stretch it to 500-600 miles on the same tank.

So realistically the best way to show how much DEF you use would be to include how many diesel fills you have between each DEF fill. i would bet in that respect the variation between everyone wouldnt be that great but who knows, might learn something new. i dont feel mileage to tank refill is a fair comparison
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  #230  
Old 08-30-2018, 03:47 PM
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Quote:
Originally Posted by lutzjk913 View Post
For some reason I thought was deleted
Not the 16, 15 was, it started burning oil so I kicked it to the curb...
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2015 Corvette Stingray Z 51 < Stock...

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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  #231  
Old 08-30-2018, 09:01 PM
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Quote:
Originally Posted by NC-smokinlmm View Post
Not the 16, 15 was, it started burning oil so I kicked it to the curb...


How many miles on your 2015? I thought it was low mileage? Hard to believe it was using oil already. Another pos LML I suppose. My LLY still doesnít burn a drop.


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  #232  
Old 08-31-2018, 03:38 AM
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Quote:
Originally Posted by IOWA LLY View Post
How many miles on your 2015? I thought it was low mileage? Hard to believe it was using oil already. Another pos LML I suppose. My LLY still doesn’t burn a drop.


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It was using it from the dig, unfortunately the truck had 276 idle hours and 17 miles when I bought it and I didn't catch it until it was too late. It is my theory that it was left running on the train during shipping. Rings never seated right, I had to delete it to figure out what was going on, it constantly regenned, it blue smoked bad. Took it to dealer, oil consumption was within GM spec so I traded it. Mileage was 68k when traded, it used the exact same amount of oil the entire time. I just caught it when I deleted bc of extended oil change intervals without regen. Low oil light would pop off, 2 quarts every time at 8k miles. 16 dosent burn a drop bc I broke it in like I do all my diesels, hook up to boat and drive straight to the FL Keys...
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2010 GMC 1500 SCSB Denali Clone < lifted 22's/33's, Kooks, Magnaflow, 5.3, 6l80, TVS1900, lots of boost, Mayhem tuned, etc...

2015 Corvette Stingray Z 51 < Stock...

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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  #233  
Old 08-31-2018, 05:22 AM
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Quote:
Originally Posted by NC-smokinlmm View Post
It was using it from the dig, unfortunately the truck had 276 idle hours and 17 miles when I bought it and I didn't catch it until it was too late. It is my theory that it was left running on the train during shipping. Rings never seated right, I had to delete it to figure out what was going on, it constantly regenned, it blue smoked bad. Took it to dealer, oil consumption was within GM spec so I traded it. Mileage was 68k when traded, it used the exact same amount of oil the entire time. I just caught it when I deleted bc of extended oil change intervals without regen. Low oil light would pop off, 2 quarts every time at 8k miles. 16 dosent burn a drop bc I broke it in like I do all my diesels, hook up to boat and drive straight to the FL Keys...
Something very interesting to remember here. Never thought about that.
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  #234  
Old 08-31-2018, 08:31 AM
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Originally Posted by zakkb787 View Post
Something very interesting to remember here. Never thought about that.
New 4 stroke outboards are the same way. Threads everywhere about them making oil. Specially Yamaha bc of their break in procedure. The cure is to run the piss out of them and have it propped so it can bounce of the rev limiter to seat the rings.
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  #235  
Old 08-31-2018, 12:03 PM
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Quote:
Originally Posted by NC-smokinlmm View Post
It was using it from the dig, unfortunately the truck had 276 idle hours and 17 miles when I bought it and I didn't catch it until it was too late. It is my theory that it was left running on the train during shipping. Rings never seated right, I had to delete it to figure out what was going on, it constantly regenned, it blue smoked bad. Took it to dealer, oil consumption was within GM spec so I traded it. Mileage was 68k when traded, it used the exact same amount of oil the entire time. I just caught it when I deleted bc of extended oil change intervals without regen. Low oil light would pop off, 2 quarts every time at 8k miles. 16 dosent burn a drop bc I broke it in like I do all my diesels, hook up to boat and drive straight to the FL Keys...
Iím surprised it didnít run out of fuel

Every new truck we get has minimal fuel in it.
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  #236  
Old 08-31-2018, 06:28 PM
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Smokin I like your style!
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  #237  
Old 09-01-2018, 04:35 AM
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Quote:
Originally Posted by lutzjk913 View Post
Iím surprised it didnít run out of fuel

Every new truck we get has minimal fuel in it.
I'm sure it did run out of fuel, I talked with several people in the know, it happens more often than you would think. They use some vehicles thru out the day to warm up when cold and cool off when too hot. Guess mine was one of the warming stations when shipped...
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2015 Corvette Stingray Z 51 < Stock...

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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