89 vs 91 Octane
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IIIOIISTER
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89 vs 91 Octane
Been using 89 Octane gas since I bought the '17 PW 7,000 miles ago, since it was the recommended octane per the manual. Tried 91 octane once or twice and didn't notice any improvement. What are some of your guys' experiences with running 91 octane for long periods of time?
'17 Power Wagon
35" Yokohama Geolander G003
Carli
-King 2.5 Pintop
-3” coils
-Front diff cover
Thuren
-Rear track bar
-Rear sway bar links
-King steering damper
35" Yokohama Geolander G003
Carli
-King 2.5 Pintop
-3” coils
-Front diff cover
Thuren
-Rear track bar
-Rear sway bar links
-King steering damper
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OffroadTreks
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Re: 89 vs 91 Octane
Don't bother. It's a waste.
2015 Power Wagon Laramie - "ROCKLANDER"
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04Ram2500Hemi
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Re: 89 vs 91 Octane
I had a 2004 HD Hemi that I ran nothing but 89 in. The same is true for my 2012 Power Wagon. I don't see any point in running 91 in our trucks.
Gone but Never Forgotten
2012 Ram Power Wagon: viewtopic.php?f=13&t=107
Truxedo Deuce Bed Cover with Bed Lights, Black Line-X Rocker Panel, Custom Built Rock Rails Sprayed with Line-X, Front & Rear Bumper and Grill sprayed with Line-X, Husky Mud Flaps, Husky Floor Mats, Four VisionX Xmitter Low Pro Prime XP LED Light Bars Behind the Grill, LED Lights Mounted in the Rear Bumper, Heated Seats, Interior LED Lighting, NAV-TV, Camera Mounted in Front Grill, Custom Headache Rack, AEV Raised Air Intake, AEV Salta HD Wheels in Onyx, 285/75/17 Cooper Discoverer AT3
2012 Ram Power Wagon: viewtopic.php?f=13&t=107
Truxedo Deuce Bed Cover with Bed Lights, Black Line-X Rocker Panel, Custom Built Rock Rails Sprayed with Line-X, Front & Rear Bumper and Grill sprayed with Line-X, Husky Mud Flaps, Husky Floor Mats, Four VisionX Xmitter Low Pro Prime XP LED Light Bars Behind the Grill, LED Lights Mounted in the Rear Bumper, Heated Seats, Interior LED Lighting, NAV-TV, Camera Mounted in Front Grill, Custom Headache Rack, AEV Raised Air Intake, AEV Salta HD Wheels in Onyx, 285/75/17 Cooper Discoverer AT3
Re: 89 vs 91 Octane
Best octane to run is the lowest that doesn't det.
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Reloaderguy
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Re: 89 vs 91 Octane
Modern engines have knock sensors that prevent detonation. You'd need to look at your timing in real time to see if the computer is retarding ignition. Otherwise you're left with calculating fuel economy.Mule wrote:Best octane to run is the lowest that doesn't det.
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OffroadTreks
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Re: 89 vs 91 Octane
Yup. I think the whole premium myth comes because usually performance vehicle air those with turbos run premium. And so others equate that maybe premium will equal a performance increase in normal vehicles.
2015 Power Wagon Laramie - "ROCKLANDER"
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FordyceCreekTrail
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Re: 89 vs 91 Octane
The new Twin Turbo Raptor literally wont even run with out premium. So maybe it gets 1-2 mpg more but you have to pay 40 cents a gallon more. Hello
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TwinStick
Re: 89 vs 91 Octane
If I am towing the camper in hill country, I run super. Just better safe than sorry is my thinking on that. Never had an issue. But the rest of the time i just use 87.