Originally Posted by Michael Cain
This one has me perplexed?
But I am confuse easlie.
less than 12 MPG
12-13 MPG
14-15 MPG
16-17 MPG
18-19 MPG
20-21 MPG
better than 21 MPG
Just looking
Originally Posted by Michael Cain
This one has me perplexed?
But I am confuse easlie.
95, 6.5, C-2500 extended cab shortbox, Auto transmixer 3.42 diff, Jardine exhaust system
FSD Cooler replaced w/ Heath PMD Isolator
Heath Turbo-Master Boost Controller, Max E Tork chip '97 cooling upgrades, Kennedy Fan clutch,
Glow Plug over ride,DeeZee 38.5 gallon Aux fuel Tank 225K miles and rolling
1994, 6.5 Blazer, 3:42 diff, 4 inch exhaust, Heath PMD Isolator, Heath Turbo-Master Boost Controller Max E Tork, Heath SB intake filter system.
221K miles and rolling.
Diesel Page member #81
Uhhhh. Yeah.....
I think that they are counting Iraq as the 51st state....I GuessOriginally Posted by 16ga SxS
Shane
Well, I get about 9.8 mpg, but then my 6.5L TD is in an 18,000 lb. class A motorhome.
I have a 93 2500 extended cab long box, 2 wheel drive, 4l80e trans, 3.42 gears non posi full floater rearend, tires are 265/75 16 ltx michelins, F engine, original pump and injectors with 170,000 miles. Its getting 20mpg on the US gal.
I looked at this thread briefly, I have a couple questions. I'm running a stock 95 GMC Sierra 6.5L Turbo diesel ext cab 6ft bed automatic trans with 152K miles and my truck rides on 315/70/17 in tires with completely stock gears to my knowledge. Normally In town I get about 11-12 miles to the gallon and I have mainly stop and go and some highway, mostly on and off the brakes. I do a little better on the highway, but not a whole load, maybe 2 mpg better. What is the standard PSI that these truck's turbos push.? I don't know as I just found the wastegate actuator on mine is shot and was wired shut so it would boost. I have no Idea of the specs on these trucks. My truck the way it was would pull up to 13 psi normally on the highway depending on hills and normally driving anywheres from 5-11psi. If i stomped it I would pull well over 15Psi as the little boost gauge thats installed that is a 15psi gauge will go past and start going around again. I got a lot of questions, but need to start getting some answers for at least a baseline, maybe this thing is out of wack thats why my MPG sucks.
95 GMC Sierra 2500 4x4 6.5L turbo ext cab 6ft bed ( relocated NEW PMD with cooler, running so far so good) SOLD SOLD SOLD
95 Chevy Silverado 1500 4x4 Z71 stepside 350V8
My MPG averages 14.8
_________________________
95 3500 ext cab,K&N air filter
no other mods
I have a 93 GMC 6.5 Turbo Diesel with a 5 speed manual transmission and I use the criuse control. This is an extended cab pick up approaching 70K miles.
This is my first diesel vehicle and I am learning the ropes and I really like driving this truck. I live in Montana and it makes going from point A to point B quite pleasant since these points can be very far apart.
On a recent trip to Minnesota in January, I average 24 mpg. I did have a tail wind that helped and I was traveling light. I normally average better than 20 mph.
I check my mileage at every fill up, so my mileage records have a good track history. I will see in better detail how things shape up when it warms up. So far winter weather has not slowed me down too much.
I enjoy this website and bulletin board. Keep up the good work; all the best.
GMC-RKL
I had original rubber on my truck when I received it. The tires quickly played out as I started driving it over Montana gravel roads.
I replaced the old tires with Cooper 235/85 R16 10 ply. They are taller tires. Over 100 measured miles the odometer is reading about 95 miles traveled. I would imagine I am rolling faster than my speedometer indicates as well. But in Montana the Interstate speed limit is 75 mph. I ususally do not go that fast.
So, if I could have an accurate measure of miles traveled I might be getting even better mileage than I calculate.
My truck runs like a dream at 1800 rpm in 5th gear going about 65 mph, and I fit comfortably in it to boot. Happy driving.
RKL
93 MECHANICAL ext cab long bos 5sp 4x4. Put on the cold air intake, 3in down pipe and 4in exhaust and get 18.5mpg. Have 4:10's
93 chevy ext cab long box,
6.5 turbo diesel-4x4-5sp manual.
186k miles. Cold air intake,
4in exhaust.
19 to 21 given the following makeup and variables at approx. 70mph
Stock 6.5, 4L80-E, 4.10 gears, Stock size tire
1. 1996 Chevy Suburban
2. 2500 2wd
3. Fuel Additive: PSP @ .45 oz/gal
4. Condition of vehicle: Fair
5. Driving habits: Conservative
6. Thermostat: 195
7. Overall rear gearing: 4.10
8. Stock Air Filter
9. Intercooler: None
10. ECM Boost Control
11. Stock PCM
12. Exhaust: stock
True Americans - Patiently waiting for the poison shrub to burn out.
Last edited by dawghauler; 04-15-2007 at 10:18.
I'm getting about the same mileage,
100000 miles on truck
1995 4x4, K2500
Stock with a FSD cooler
and straight through 3" exhaust.
I plan on putting a 40 horse chip in and am wondering what that'll do to my mileage. Also will be installing after market intake filter (cone style) I want to hear the turbo whine.
Right now I get 18/20 MPG at 1900 RPM which is about 61MPH.
Anything over 2000RPM and the gauge drops proportionally.
What I don't understand is how can a person with a lifted new 4x4, oh let's say a Ford F350 Crew cab just for kicks with a diesel can haul down the freeway at 80MPH and not be in the poor house. I see it all the time.
I've got a good job make good money, these guys must be running the credit up at the gas station.
Things do change - with my replacement Peninsular Diesel AMG 230 HP (custom spec'ed) 6.5L TD, mileage is nearly 11 mpg...Originally Posted by rustyk
'94 Barth 28' Breakaway M/H ("StaRV II") diesel pusher: Spartan chassis, aluminum birdcage construction. Peninsular/AMG 6.5L TD (230HP), 18:1, Phazer, non-wastgated turbo, hi-pop injectors, 4L80E (Sun Coast TC & rebuild, M-H Pan), Dana 80 (M-H Cover), Fluidampr, EGT, trans temp, boost gage. Honda EV-4010 gaso genset, furnace, roof air, stove, microwave/convection, 2-dr. 3-way reefer. KVH R5SL Satellite. Cruises 2, sleeps 4, carries 6, and parties 8 (parties 12 - tested).
Stand-ins are an '02 Cadillac Escalade AWD 6.0L and an '06 Toyota Sienna Limited.
Good Day!
I hope you're not unaware of it, but going from 9.8 mpg to 10.8 saves you ~ 1 gallon per 100 miles. Do the math: at today's fuel prices, that's a significant savings.
Blessings!
82 6.2NA K15 4X4 pickup, 4spd man w/ OD, 335K+ "In Rust We Trust" (parked)
95 6.5TD 2500 4X4 pickup, Gear Vendors Aux. OD, > ¼ million miles - gone
95 6.5TD 1500 4X4 3/4T Suburban, Kennedy exhaust, > ¼ million miles
93 6.5TD 3500 4X4 1T crew cab LB pickup, 230k miles
18 MPG. That's not bad for a tank.
94 Silverado 6.5TD Crew Cab DRW
7" Fabtech Lift / 33" Mud Terrains
SSDiesel Cold Air Intake and Exhaust
Freeway: 13 to 14 mpg cruising at 75 mph.
City: 12 to 13 I think my dear wife likes to hear the diesel roar as she leaves the stops. :-)
4.10 rear end
Automatic trans.
Steve
The Family Truckster is:
1996 6.5L TD K2500 4x4 Suburban
Stock except for:
- Nerf bars
- FSD Cooler mounted remotely
Summer '07: 180K miles and going onto my fifth injection pump (first one I've had to pay for)
I have a 94 with 152,000 miles on it with no motor work. The truck is an ext. cab long bed, 3/4 ton with 3.73 gears. Everything is stock except a Heath Diesel lift pump. On freeway I get an average of 22 mpg and in town/highway i get an average of 17-19 mpg.
To "dually0815".........Youre truck looks awesme,was wondering if i could get a few pics emailed?Just purchased exact truck and would like to do the exact lift and size tires..Good Looking Truck!!! Thanks, urcableguy@hotmail.com
1997 Suburban
1500 1/2 Ton (snicker snicker)
6.5L factory engine NO mods
3.42 gears
42 gallon tank
150,000 miles
highway 24mpg @ 65mph
city 15 - 18mpg depending on season
Not bad for something that weighs as much as a semi
gets 16-18, doesnt matter if it is in the city, on the highway, pulling, towning, loaded, i hauled a 450 gallon water tank all summer, avg. 16.4, 4.10 gears, but I only drive the truck 63 mph, on the freeway i go 70.
94' GMC K2500HD, Heath chip, -1.94, Turbo-Master, AFE Cold Air Intake, Bosch High Flow Injectors, 3" Exhaust all the way back, 4.5" chrome tip(exhaust sounds sweet), Heath Turbo Down Pipe, Heath Crossover, IssPro gauges, Three Pod Piller, 98' Cooling Mods, DMax Fan, High output water pump, DSG Oil Cooler, Heath PMD kit, Light kit with high output bulbs(very bright...finally)