3.0 Observations

Big Till 3.0

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Jul 12, 2020
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Posted this on another forum today...

Bought my 3.0 end of June. Distance driven 6536 miles as of today. 20 miles back and forth to work M-F. Weekends 50 or so miles. 1 road trip in Sept of 700 miles. These are my observations.
Early on regens were occurring 150-180 miles. Regens take around 10-12 miles of driving. Road trip (700 miles) that day regens around 250 miles. Lately my regens are 200-225 miles.
Oil engine temp. This usually mimics the engine coolant temp around 210-220 degrees, however, on the road trip the EOT was around 230-240. The 240 mark was reached when traveling 75mph. I noticed at 70 230 was the norm.
All my info is gathered by my Banks IDash which I highly suggest if you are a info freak like myself.
Other notes: During regens on bank 3 EGR,temps top out around 1100 which is normal on a regen.
My previous diesels were 2005 LLY duramax and my 2016 Colorado with the 2.8 duramax.
This truck so far is the best out of them all. I am averaging 27.16 MPG as of today (using the Simply Auto app).
Just had my first oil change at 5670 miles. My dealer also topped off the DEF which was a little over half on the gauge.
I have a 1500 mile road trip coming up in a few weeks. I will report back with more info. Enjoy.

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Big Till 3.0

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Jul 12, 2020
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As promised I completed my 1500 mile trip, here's what I learned.
The 3.0 loves to cruise at around 1600 rpms and between 68 and 73 for best mileage. On my trip a lot of cruising was around 75-80 and 1800 rpms.
With this I had gone through 4 regens all taking place around 300 miles. I found it interesting that 3 of 4 yielded a 0% DPF load after completed, the other 2%. While driving locally I will get anywhere from 4%-10% after a regen. My average mpg was 25.32 in which I'm happy with. Observing the EOT I noticed that between 75-80 it likes to hold around 240-245, a bit high in my opinion. ECT's were steady around 210-215. My def usage was low,down 1 bar on gauge. All in all the truck performed well, comfortable to drive and very smooth at any speed.

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LBZ

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Thanks for the update.
Was this trip just cruising empty? Mountains? Flat ground? Wind?
 

Big Till 3.0

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Jul 12, 2020
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Not empty. Tools in bed. Not heavy though. Mostly flat first 300 miles hills not to extreme. Of the 300 miles I did have a head wind.

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