Fuel Economy For 5.3L & 6.2L With DFM Released

[i82much]

I get 12.5 or so in my 6.0 2500hd.  Quit yer dang complaining ?

[Black02Silverado]

4 hours ago, i82much said:

I get 12.5 or so in my 6.0 2500hd.  Quit yer dang complaining ?

It likes to drink fuel, but it is one tough engine!

[elcamino]

The V8 pickup truck is doomed vehicle.  GM is offering the I4 in the NBS and that's going to be the future.  When more socialists get elected to the highest offices in the country, they will get these V8 trucks and SUV's off the US roads.   Enjoy it while you can as your freedoms are going away slowly as the EPA rules the land.

 

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Edited July 2, 2018 by elcamino

[KARNUT]

They’ve been trying to make a V8 into a 4 for a few years. The latest GM version is getting old enough now you’ll start seeing the reliability results of that. Want a real V8 in a truck? Toyota, Ford, Nissan.


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[diyer2]

1 hour ago, elcamino said:

The V8 pickup truck is doomed vehicle.  GM is offering the I4 in the NBS and that's going to be the future.  When more socialists get elected to the highest offices in the country, they will get these V8 trucks and SUV's off the US roads.   Enjoy it while you can as your freedoms are going away slowly as the EPA rules the land.

 

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Disagree.

 

[EDL]

When they can make an electric truck with 400+ HP that can go 500 miles between charges and only takes 5 minutes or less to charge, then I'll consider it...heh.

 

of course, as you say, as more people choose to elect socialists, we may not have that choice to make.

[Doublebase]

5 hours ago, KARNUT said:

They’ve been trying to make a V8 into a 4 for a few years. The latest GM version is getting old enough now you’ll start seeing the reliability results of that. Want a real V8 in a truck? Toyota, Ford, Nissan.


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Well I think you're right about the trucks being old enough now that we'll start to see how reliable these things are. I would think they've held up reasonably enough - the 2014's have been out now for five years - and they sold maybe half a million of them in 14. So unless we are seeing/hearing of massive amounts of failures, then they must be doing ok. I know you hear about the occasional collapsed lifter around here, but for the most part I think statistically it's ok. I've talked to some guys at dealers and they say they don't usually see the Silverados in for major repairs. But who knows? 

 

I'll tell you one thing, I'll take a collapsed lifter over rings that need replacement. If I can make it to 150,000 without having an AFM issue, I'll be happy. At that point I'll either decide to do the repair or trade it in.

[EDL]

I know everyone's opinion varies, and trucks seem to be one subject where they vary a lot and usually involves, um, "spirited" discussions :-)

 

I look at it this way:  materials science, manufacturing processes, computer technology and all that have advanced so much in the last 30 years, and combined with the fact that pickup trucks aren't something humans have just recently invented, I fully expect my new truck with a nearly $60,000 price tag to be flawless in every respect.  Squeaks, vibrations, rumbling, shaking, odd transmission behaviors and all that should not be happening.  I do accept that the occasional lemon makes it out the door as these are complex machines and nothing is perfect.

 

Aside from that, I still wonder why 100,000 miles is the "magic" number, both in terms of when things start to go bad and trade-in values plummet.   You'd think with all the technology and science and newer super metals and such that vehicles would routinely go, say 200,000 without major mechanical issues, but nope, 100,000 miles has been the magic number for the last, what?  30 to 35 years or better?

 

I'll also add to that the short cuts design engineers use today.  I recall when a wheel bearing went bad, you went to the parts store and plopped down $50 or so for a set of bearings, came home and swapped them out.  Today, you just replace the entire freakin hub assembly at $500 or better each.  Why?  It's cheaper and easier for the manufacturer to make them that way and you, as the consumer, get the pleasure of paying for it.   But, those outrageous parts prices only further fuel my opinion that things should last longer.

 

 

 

 

[KARNUT]

Well I think you're right about the trucks being old enough now that we'll start to see how reliable these things are. I would think they've held up reasonably enough - the 2014's have been out now for five years - and they sold maybe half a million of them in 14. So unless we are seeing/hearing of massive amounts of failures, then they must be doing ok. I know you hear about the occasional collapsed lifter around here, but for the most part I think statistically it's ok. I've talked to some guys at dealers and they say they don't usually see the Silverados in for major repairs. But who knows? 

 

I'll tell you one thing, I'll take a collapsed lifter over rings that need replacement. If I can make it to 150,000 without having an AFM issue, I'll be happy. At that point I'll either decide to do the repair or trade it in.

One of the hardest problems NASCAR has with engines is related to the value train. Push rods, valves, lifters . That’s usually were the failures are. Right where their playing cylinder deactivation. Do we want to go back to the sixties and seventies and be satisfied with 150K miles tear downs? The problem with that is trucks cost more than 3K. I can visualize 5-7 year old GMs and Fords in the salvage yards. GMs side trucks with cylinder deactivation, Fords side V6 turbos. Engines that would usually go 300K miles before the great experiment.

 

 

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[Doublebase]

5 hours ago, KARNUT said:

One of the hardest problems NASCAR has with engines is related to the value train. Push rods, valves, lifters . That’s usually were the failures are. Right where their playing cylinder deactivation. Do we want to go back to the sixties and seventies and be satisfied with 150K miles tear downs? The problem with that is trucks cost more than 3K. I can visualize 5-7 year old GMs and Fords in the salvage yards. GMs side trucks with cylinder deactivation, Fords side V6 turbos. Engines that would usually go 300K miles before the great experiment.

 

 

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Yeah I guess I probably shouldn't have said I'd be happy with a collapsed lifter at 150,000, lol. It's just that I guess it could be worse. But yeah I'd much prefer 300,000 of trouble free engine performance. I must say despite all the talk of...engines are so durable, so good, nowadays...I've never gotten 300,000 trouble free miles out of an engine (and I take care of my cars). My Honda Accord - owned since new - began guzzling oil at 270,000 miles...had to get rid of it at 280,000. Keep in mind I changed the oil EVERY 3,000 miles on that car. Vtec problems, egr issue, idle issue, gasket leaks, O2 sensor, engine mounts every other year. And that was a great car.

 

Lexus LS460 - really thought this car was capable of going 300,000 easy - problem was it just turned into a serious oil burner at 160,000. Real bad. Turns out they have "head issues". Valve guides. $12,000 dollar fix. Not happening. Honestly I think my rings were shot though. All I know is that so much oil was going back into the intake, the thing was flooded with oil everyday. Pretty bummed that car didn't make it the distance because it was an amazing car overall. Synthetic oil changes every 5,000 miles religiously. Didn't matter. Nothing really does with bad design. 

 

I plan on doing 5,000 mile synthetic oil changes with my truck, we'll see if that helps in the collapsed lifter department (I hear keeping up with oil changes is key with the AFM on these engines). Then again I heard the same thing with my last two vehicles.

[KARNUT]

Yeah I guess I probably shouldn't have said I'd be happy with a collapsed lifter at 150,000, lol. It's just that I guess it could be worse. But yeah I'd much prefer 300,000 of trouble free engine performance. I must say despite all the talk of...engines are so durable, so good, nowadays...I've never gotten 300,000 trouble free miles out of an engine (and I take care of my cars). My Honda Accord - owned since new - began guzzling oil at 270,000 miles...had to get rid of it at 280,000. Keep in mind I changed the oil EVERY 3,000 miles on that car. Vtec problems, egr issue, idle issue, gasket leaks, O2 sensor, engine mounts every other year. And that was a great car.
 
Lexus LS460 - really thought this car was capable of going 300,000 easy - problem was it just turned into a serious oil burner at 160,000. Real bad. Turns out they have "head issues". Valve guides. $12,000 dollar fix. Not happening. Honestly I think my rings were shot though. All I know is that so much oil was going back into the intake, the thing was flooded with oil everyday. Pretty bummed that car didn't make it the distance because it was an amazing car overall. Synthetic oil changes every 5,000 miles religiously. Didn't matter. Nothing really does with bad design. 
 
I plan on doing 5,000 mile synthetic oil changes with my truck, we'll see if that helps in the collapsed lifter department (I hear keeping up with oil changes is key with the AFM on these engines). Then again I heard the same thing with my last two vehicles.

I have to admit being an older dude it chaps my ass they would mess with my favorite small block. Especially since they get great gas mileage anyway. I do know a few people who have gotten right at 300K, miles my brother in law on two Tahoe’s and his daughter with a pickup. I hope cylinder deactivation works for everyone. I will not take part in the experiment.


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[mookdoc6]

On 7/2/2018 at 11:33 AM, Doublebase said:

Well I think you're right about the trucks being old enough now that we'll start to see how reliable these things are. I would think they've held up reasonably enough - the 2014's have been out now for five years - and they sold maybe half a million of them in 14. So unless we are seeing/hearing of massive amounts of failures, then they must be doing ok. I know you hear about the occasional collapsed lifter around here, but for the most part I think statistically it's ok. I've talked to some guys at dealers and they say they don't usually see the Silverados in for major repairs. But who knows? 

 

I'll tell you one thing, I'll take a collapsed lifter over rings that need replacement. If I can make it to 150,000 without having an AFM issue, I'll be happy. At that point I'll either decide to do the repair or trade it in.

GM is using the same architecture and very minimal tweeks to the Current Engine Lineup of V-8's and stuffing those into another production run for 5 years?  Wonder why?  GM has probably built the most reliable, efficient small block's on planet Earth they are basically telling you this by using again for next Full-Size BOF vehicles.  These LT's are a cut above folks they are that good..........100k miles on em is a JOKE   

[O_J_Simpson]

Watching truck guys talk about fuel economy is like watching fat girls discuss diet plans. You can't help but laugh. 

[j-ten-ner]

Why? What's wrong with that?

 

so long

j-ten-ner

[Willborio]

3 hours ago, O_J_Simpson said:

Watching truck guys talk about fuel economy is like watching fat girls discuss diet plans. You can't help but laugh. 

Yea I mean you're right. Why be glad to see better hp and tq numbers along with better fuel efficiency? I mean a 98 1500 with a 350 made 75% of the current power and 10 less mpg. Even truck guys can be glad to see better mpg