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Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

What are you guys getting on average for fuel mileage on your 6.5 turbos. Just curious. Thanks... JOIN NOW TO REMOVE TRACER

chevy 6.5 fuel mileage

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  #1  
Old 01-23-2010, 12:14 PM
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Default chevy 6.5 fuel mileage

What are you guys getting on average for fuel mileage on your 6.5 turbos. Just curious. Thanks
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  #2  
Old 01-23-2010, 09:15 PM
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I get about 14 to 15 mpg in the winter in the city. I don't drive on the highway much. In the summer I get about 16 to 17. on the highway I bet I would get 20 mpg.

Woody35's Sig:1997 Chevy K1500 4X4 EC/SB L56 6.5TD/4L80E
KOJO Tune, GM-8 Turbo gated @ 15 psi, 2100 PSI Pop Pressure Bosch Injectors,
Bosch Duratherm Glowplugs, Steel Braided Oil Cooler Lines,Relocated D-Tech PMD,Tekonsha Voyager Brake Controller
Autometer Gauges, ARP Headstuds, K47 Air Box , Flowmaster Crossover & 4 Inch Diamond Eye Exhaust
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  #3  
Old 01-23-2010, 09:18 PM
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welcome to diesel bombers a great place to hang out
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  #4  
Old 10-06-2010, 09:07 PM
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14-20 MPG here. 1996 silverado 2500 4x4 ext cab long bed 6.5 245,000 miles
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  #5  
Old 10-06-2010, 09:14 PM
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i am getting about 18 to 21 that city and highway

Crazy's Sig:Traded for 94 F-350 turbo blow the motor up little red
1997 3500 Ext Cab 2 Wheel Drive 300,000 plus miles New Trans with up grades for towing Rebuild Rear end 4:11 with
new axles,new injectors, 4" Exhaust , 5" tip, PMD Moved to front Bumper TM 18psi boost,,new LP,boost,EGT and trans gauges and Max E Tork T-Series
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  #6  
Old 10-07-2010, 11:08 AM
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with 4.10 gears i think i get better around town than on the highway because at 65mph im at 2500rpms. i would say 18-20 driving in town and 16-17 in the highway

tyler111991's Sig:1988 F250 XLT Lariat, ZF 5 speed, 4x4, 7.3 N/A IDI, manual glowplug switch
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  #7  
Old 10-07-2010, 11:13 AM
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let me clear that up i get 15 to 18 highway and 18 to 21 back roads
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  #8  
Old 10-07-2010, 07:17 PM
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23 mpg highway and about 20 in the city. ive got a half ton, 2wd, with 273s outback though.

muderxtreme's Sig:93 f350 crew, lwb, srw, 4x4, 7.3 idi, zf5, 10.25 rear, Dana front, 4.10s, stockish, 280k

94 c1500 6.5td -sold
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  #9  
Old 10-13-2010, 03:05 PM
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16 mpg towing a 4k lb trailer 70 mph from WI to VA..... about 19 city..... Im happy with that just a k&n filter

_hollywood's Sig:1998 GMC 2500 W/T 2WD RC/LB 6.5L
107k miles
K&N filter in oem box, removed turbo silencer
Stock Orange paint
former state owned truck
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  #10  
Old 01-27-2011, 07:05 PM
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Wow i only get 10 not towing and in the winter. But i think i have boost issues.
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