Benefits of the diesel?

[EddieC]

That is a variable point as well.

Diesel being more expensive than gasoline, this is an ever changing value.

But it is always noticeably higher here. I can't remember when diesel was under $4 a gallon here, even when gasoline was around $3.
A better reason than mileage is needed to buy one around here.
Needing a HD truck with low end grunt would be the only one that comes to mind.

 

[Stbentoak]

That is a variable point as well.

Diesel being more expensive than gasoline, this is an ever changing value.

Diesel is not cheaper than premium by a long shot. Diesel is .50 lower than PUL in FL. Most people have 6.2’s and they need premium to be At their best. Plus 40% better mileage…

 

[vadorsnake04]

When I think about mileage with the diesel, I don’t think about the savings from mileage. I actually just think about the less frequent stops lol.

 

[Marky Dissod]

Diesel is not cheaper than premium by a long shot.

On a drive from Breucklen to Suffolk County Lawn Guyland, the price of premium and diesel vary significantly.
Some places they're either very close, or the same, depending on when.
Some other places, diesel is clearly more expensive, always.
But the further away from Queens, the cheaper diesel becomes relative to premium - sometimes well cheaper.

 

[EddieC]

Your trucks take Premium?
That doesn't make sense on GM's part.
Glad I have a pedestrian Tahoe.
I haven't bought Premium since I had the vette in 2003.

 

[Marky Dissod]

I don't own anything with a 6.2L.
What doesn't make sense on GM's part, is that the LS3 & L92 say '91 or 93' recommended ...
and the L92 L9H and L94 all say '91 or 93 recommended' ...
yet GM wrote the L92 L9H L94 Low Octane Spark Tables
failing to account that the L92 L9H L94 owners are far more likely to consider 87 octane.

 

[Stbentoak]

I've owned vehicles that would throw a CEL if you put regular in them and they recommended premium. Sure, you CAN do it. But there may be surprises down the road...

 

[Marky Dissod]

Regarding the L92-L9H-L94, is that
GM could've EASILY / should've written their (Low Octane) Spark Timing tables to better tolerate / utilize 87 octane,
even if that would've lowered the advertised peak horsepower and torque figures ...

... GM failed to do so, which led to a considerable number of L92-L9H-L94 that were abused to their breaking point.

 

[SNWMBL]

These things average like $70k now, who cares if one type of fuel is $0.50 more.

We ordered a diesel for the fuel mileage and range when towing (based on reports I’ve read) and to avoid the issues with the 5.3 and 6.2, the diesels seem very reliable so far.

 

[DocDoug]

Baloney.... I've short tripped mine for 3 years now. Occasional 30- 50 mile runs may be twice a month. Other wise most days less than 10 miles. No issues... Worst City MPG... 20 MPG....

You will see problems at about 80,000 miles when you need a new DPF. Not cheap. This will erase all fuel mileage savings over the 5.3.

 

[DocDoug]

This is old thinking related to old diesel technology. It’s simply not true anymore.

I am on my third modern diesel (2017 L5P duramax, 2018 Cummins, 2022 Cummins). My daily drive to work is 8 min and I make that drive 6 times a day almost every day. No issues.

You don’t keep them long enough to have problems. Smart.

 

[Stbentoak]

You will see problems at about 80,000 miles when you need a new DPF. Not cheap. This will erase all fuel mileage savings over the 5.3.

DPF is covered under 8/80 emissions warranty, plus mine gets a good drive every week or so. This isn't the DPF's of old....
Closer to the engine lets them burn hotter and cleaner and get to temp much more quickly...

 

[UsualSuspect]

You will see problems at about 80,000 miles when you need a new DPF. Not cheap. This will erase all fuel mileage savings over the 5.3.

We have 3.0's well into the 100,00's, never had one go bad, never replaced one, but I am sure there are a few out there that failed. DPF's can be cleaned, which is done on Class 8 trucks at 500,000, I haven't seen any GM documentation on when, or if it needs to be removed and sent out for cleaning. I had my in-house mechanic look, we can buy an OEM DPF from GM for a little over $900 our cost, not sure what retail is, but the Class 8 trucks I know what they cost to clean, around $1,500, and that is just the cleaning, doesn't include R&R from the truck. I wish GM would have included a manual regen, and a way to tell you it's needs one, or if it is doing a regen, but I have a feeling some folks would panic if it told.