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Old 07-09-2015, 12:06 PM   #21
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I have noted no knock when running solo with 87 octane. But knocks often while towing without 91 octane. Never tried 89, but like Mr. Barnhart says, it's not that much more expensive in the scheme of things.
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Old 07-09-2015, 07:15 PM   #22
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2014 F150 6.2L Does Well Too

I have had a similarly positive experience with a 2014 F-150 Super Crew with the 6.2L V-8, tow package, extendable mirrors and 3.73 (I think) rear end. We bought the 2014 F-150 Platinum with the 6.2L in August 14 when I discovered the 6.2L wasn't available in the 2015 F-150. We bought our AS 27 International Serenity in October. Argued with myself and researched for a year between the EcoBoost and the 6.2L -- is the 6.2L too much power/too low mileage? Will the Ecoboost be underpowered up steep hills, spend most of its time at max RPM and make me crazy? So it turned out the F-150 is a total pleasure to tow with, plenty of power, stable and the tow/haul mode is great - touch the brake and get a downshift. Mileage is running ~10 mpg thru hilly terrain, with a 35 gallon gas tank I can live with that, better than I feared. Around town mileage is 11-12, and since I'm retired now and low miles, not a big deal. I had the dealer install Corsa duals and the quick off the line V-8 plus the nice rumble from the duals is always a pleasure. My other hobby is old Mustangs, and the 6.2L is also know as the 2012-13 Mustang Boss 302 motor. I probably coulda lived with the Ecoboost, but my heart's with a big V8. Yowza.
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Old 07-10-2015, 09:01 AM   #23
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Is that 6.2L in your F150 the same engine they put in an F250 gas? I would think the extra 1000+lbs of the F250 would hurt that engine's performance.

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Old 07-10-2015, 09:09 AM   #24
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The max tow package is a slightly stiffer ride than without, but much less stiff than the Chevy 2500 with either the gasoline or Diesel engine, both of which I've driven. I'd be hard pressed to distinguish the max tow package ride from either the '14 F-150 (with max payload and max tow) or the '15 F150. If anything the F150 is less compliant than my GMC. My wife commented that the F150 "felt like a sports car" (we owned a BMW Z3 for 12 years). Honestly, the differences in ride among all of the 1/2 tons I drove were subtle, and the reason we didn't go for a 3/4 ton did not have to do with ride, or price. We could have had a Silverado LT crew cab with the Duramax for the same price we paid for our truck. Regarding fuel, one knucklehead salesman said we could run regular in the 6.2. Following the well-known principle of RTFM, I did read what the manual said. Basically, it said you can do it if you have to, but get 91 octane in there ASAP. Detonation ("knocking") can cause serious engine damage, which just might not be covered by warranty if it's the result of using low octane fuel. As others have pointed out, if you "do the math" buying the specified fuel is cheap compared to replacing the engine. That said, the fuel cost of operating the Ecoboost might be a little less, notwithstanding the slightly worse fuel economy.
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Old 07-10-2015, 11:16 AM   #25
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How times change. Diesel engine costs more ($7K or so). 6-8 months ago Diesel was more expensive than gas, sometimes a $1+. Just looked. Local convenience place today Diesel $2.54, reg $2.57 and 91 Oct $3.02. In the scheme of things everything is relative. Even happier now that I have a diesel. 6 months ago didn't have the same smile
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Old 07-18-2015, 05:19 PM   #26
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Update to my 2015 Sierra 1500, SLT with 6.2 max tow package.
we just finished a trip from our home base in Ottawa, to Niagra Falls then on to Lake Erie and finally along Lake Huron before heading home. The trip had a good mix of hills and flat country and without a doubt the truck was awesome in performance. The power of the truck is there each and every time I needed it and it ride as well as any pick up I have ever owned and operated. the numbers on this trip as as follows. metric and U.S.
2,909.0 KM with 22.4 litres per 100 KM
-----------OR--------------
1,298.7 miles with 10.5 miles per US gallon

the truck pulled a well loaded 31 Classic with two adults and two well behaved grand kids as well as all of essiential camp and beach stuff. Water tank was full, grey and black were MT. On the return trip I would estimate that we carried 200 pounds of beach sand in the truck and trailer!
I simply cannot say enough about the truck. The grade assist feature is NOT a jake brake but it does 'assist' on the down hill runs. The grade park assist is something that once you realise what it is and what it does, is a neat little aide in stop and go traffic. The extendable mirrors work well with the trailer as does the integrated brake controller with the hydraulic brakes. In short it does what it was designed to do and it does it very well.
I agree that the use of 91 octane is a bit of a hit at the pumps but I have never kept track of fuel costs on any tow vehicle. It just isnt a definer for me. Anyway, the cost goes away the first time you stick your toes into the carpet and burn off some 91 octane and feel the 6.2 perform!
All good so far. (truck has about 6,000 kn or 4,000 mile on it. All broke in now)
Thanks
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Old 07-19-2015, 05:46 AM   #27
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Thank you DC for the ride update and white laker for the engine results, sounds like a great package.
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Old 08-23-2015, 12:19 AM   #28
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1500 6.2 instead of a Duramax

Need to chime in on this topic to see what other information folks have about the newer GM 1500 series with the 6.2 motor and Max towing package. Just drove one of these yesterday and have to say I was quite impressed. Many of you might scratch your heads about what I'm considering doing. That being, trading my 15' 2500 Duramax in for one of these rigs….
Without getting into some month long debate about how great the diesels are, let's just say the one I have doesn't suit me. Already quite tired of the miserable ride this rig has. Maybe in about 100 yrs GM will figure out how to adapt a coil spring suspension to the front of these trucks, versus continuing to build them with the high stiction torsion bars
So my question is, how much weight are you folks having to shift to the rear trailer axle with the WD bars? I know my 2012 25' FB is supposed to be quite tongue heavy and need to be sure the 1500 trucks will handle the duty…
Input/feedback would be greatly appreciated…
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Old 08-23-2015, 06:05 AM   #29
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Pat, I hear you, and don'y think you're off base at all. It's a personal needs thing. If there were some more rear axle capacity on the maxtow 1500, there would be no question for me. I'm still on the fence.
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Old 08-24-2015, 02:44 AM   #30
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Rich,
Appreciate your comment… A very hard decision to make.. Looking to see if anyone else has gone this route or not…Might just wait and see what other changes the 16's have available….
Pat
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Old 08-24-2015, 05:35 AM   #31
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Pat, I believe you would find that the engine will have all the power you need, and the chassis will pull the weight comfortably, the issue seems to be what's left for legal payload in the vehicle itself. If you can live with the payload limit you will be able to enjoy the ride of a 1500 chassis when not towing. Good luck with your research and decision.
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Old 08-24-2015, 05:57 AM   #32
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Pat,

I have a 2012 Chevy 1/2 ton pulling a 2012 Serenity 25FB. I have been to the scales to confirm my rig is within specs and that my WD bars on my Propride are set properly. I do not need to haul much stuff, my grill, some tools, our camping chairs, a small air compressor, and sometimes my Yamaha 2K generator. Just me, my wife, and the dog in the cab.
I love the ride of the 1/2 ton and manage about 13 mpg for general towing. I have been through the Blue Ridge mountains and on steep grades I am in 4th gear in the truck lane, but there is still more available if I put my foot down.
I might have liked the bigger V8, but I could never rationalize the cost or discomfort of a bigger truck with a diesel. Moreover, my truck gets intermittent local use when not towing, horrible duty for a diesel. I'd probably be growing algae in a diesel tank.
I am very satisfied with what I have.
Larry
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Old 08-24-2015, 08:29 AM   #33
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Pat
I can understand fully, having test driven a 2500 with both the diesel and the gas engine. The max tow package gives me 1960 lbs cargo capacity. If I recall correctly, the 2500 gives you 500 more lbs. I have not obsessed about weighing axles on a CAT scale to be able to tell you how much tongue weight is being move off the rear axle by the ProPride hitch. I can tell you that I have 1400 lb bars and, without them engaged, the back of my truck sags and the rear tires bulge out noticeably. With the bars engaged, the truck (and trailer) are level and the tires look the same on all four wheels. My only complaint is that the suspension is a little underdamped, which is apparent even driving around an empty truck. If you don't dial in enough weight transfer the truck/trailer combo can bounce up and down through several cycles. Proper WD set up reduces but does not eliminate that "porpoising" issue. Was completely comfortable with the truck's performance uphill and down crossing the highest part of WVa a few weeks ago at 60 mph. I can't imagine that this truck wouldn't work fine with a 25-footer. Given that the overall weight of the 25-footer is less, the porpoising might not even happen.
Only other complaint is that the premium gas required by the 6.2 is a little higher than diesel. I think fuel consumption is very close. If a salesman tries to tell you that premium is optional, don't believe him. RTFM and it's clear that engine damage can result from using lower octane fuel and the General's warranty probably won't cover it.
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Old 08-24-2015, 12:51 PM   #34
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The 91 Octane isn't a firm requirement. Below is from the 2015 owner manual. In fact, I spaced out and used 87 for about 3 or 4 tankfuls (driving solo) and never heard any knock and performance was fine. However, when hitching up, I realized it, because it knocked. Fortunately tank was below half and I filled with 91 and it was fine (mixed was 89ish). I think mid-grade is certainly fine for solo driving, and 87 probably is here in the flatlands and you don't have a heavy foot. Experiment and see. If it knocks, move up a grade at a time, but always tow with premium.

"If the vehicle has the 6.2L V8 engine (VIN Code J), use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. Regular unleaded gasoline rated at 87 octane or higher can be used, but acceleration and fuel economy will be reduced, and an audible knocking noise may be heard. If this occurs, use a gasoline rated at 91 octane or higher as soon as possible. Otherwise, the engine could be damaged. If heavy knocking is heard when using gasoline with a 91 octane rating or higher, the engine needs service."
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Old 08-24-2015, 01:10 PM   #35
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Compare that quote with these 2 engins in the vette:

"If equipped with the LT1 engine, use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. Regular unleaded gasoline rated at 87 octane or higher can be used, but acceleration and fuel economy will be reduced, and an audible knocking noise may be heard. If this occurs, use a gasoline rated at 91 octane or higher as soon as possible. Otherwise, the engine could be damaged. If heavy knocking is heard when using gasoline with a 91 octane rating or higher, the engine needs service.

If equipped with the LT4 supercharged engine, use premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 91 or higher. If the octane is less than 91, damage to the engine may occur and may void the vehicle warranty. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs service. "
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Old 08-24-2015, 02:16 PM   #36
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DCBruce, you have the 3.42 rather than the 3.73? Is the 3.73 actually an option here on the 1500? I haven't seen many/if any that have the 3.73, but is that the preferred to 3.42?

Oh my! I think I am seriously having dreams about tow vehicles these days! ha ha

I do think that close to 2000lbs payload would be pretty safe/sufficient for us and I do like Chevy simply b/c I've had good luck with them in the past - our current Tahoe is 10 years old with 150,000 miles and NO motor issues whatsoever. We call her old reliable

Admittedly, I love the interior of the F150 more, but without max payload (which is apparently still not available with F150) 1900ish payload from Silverado 1500 seems to be the most I've seen without getting into the 2500 zone.
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Old 08-24-2015, 02:18 PM   #37
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3.73 is only on the 5.3l maxtow. 6.2l has 3.42.
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Old 08-24-2015, 02:41 PM   #38
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Is the 3.42 acceptable?

Or stated differently, would you rather have the larger 6.2L motor or the 3.73 for towing if you had to choose one?
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Old 08-24-2015, 02:55 PM   #39
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6.2l with a 3.42 and 8 speed is MORE than enough. I pulled my 9000# Classic all summer (long trip from Chicago to Keys and back) with a non-maxtow 6.2l with a 3.23 and was VERY impressed. 3.42 would be even better.

With my rig, I wouldn't consider a 5.3.
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Old 08-24-2015, 03:11 PM   #40
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Yeah, the gear spread on the 8 speed is huge. The 3.42 is more than low enough. The non max tow version is a 3.23. Yeah the 8 and 6 speeds are totally different animals.
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