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

what kinda mpgs should a 6.5 get?

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  #1  
Old 11-09-2010, 10:57 PM
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Default what kinda mpgs should a 6.5 get?

im just woundering what kinda of mpgs a 6.5 diesel should get?
 
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Old 11-10-2010, 11:01 AM
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i know my 97 3500 auto 2wheel drive with 4:10 only getting 15 mpg and 8 mpg towing a 16,000lb 5th wheel and i can't seem to get any more then that and have done eveything i could just get that but now i hear ppl getting 18 to 21 mpg
 
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Old 11-10-2010, 01:42 PM
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yeah im gettin the same and i hear ppl gettin 20 at least with them
 
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Old 11-10-2010, 06:51 PM
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me driving around town i get 15
 
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Old 11-14-2010, 10:43 PM
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between 18 and 20 with a C3500 single cab and 4.10s. the taller tires i put on helped the low gears on the highway
 
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Old 11-14-2010, 10:50 PM
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between 18 and 20 with a C3500 single cab and 4.10s. the taller tires i put on helped the low gears on the highway

Read more: https://www.dieselbombers.com/chevy-...#ixzz15Kq2VAUg

what size tires are you running and is your truck s/w or d/w
 
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Old 11-14-2010, 11:11 PM
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Originally Posted by tyler111991
between 18 and 20 with a C3500 single cab and 4.10s. the taller tires i put on helped the low gears on the highway
you must drive really slow
 
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Old 11-14-2010, 11:20 PM
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Old 11-15-2010, 12:07 PM
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I get 19 hwy empty, 16 towing my car @ 70mph, and around 16 city.....I drive like a grandpa I never really go over 2k rpm, unless I need to lose a pesky dodge ram or f150
 
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Old 11-16-2010, 05:27 PM
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pesky dodges,
 


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