6.5 turbo chev diesel fuel consumption

Submitted: Friday, Jun 25, 2010 at 19:10
ThreadID: 79634 Views:3648 Replies:6 FollowUps:1
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Gday all, need info of fuel consumption on these motors. Some say 12.5l/100 others say 17l/100 and pretty much from there. Not concerned with towing consumption figures, am sure is better than a standard 4.2 turbo diesel.

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Reply By: hotfishez - Friday, Jun 25, 2010 at 19:11

Friday, Jun 25, 2010 at 19:11
is in a 2000 landcruiser 100 series
AnswerID: 422122

Reply By: Ozhumvee - Friday, Jun 25, 2010 at 19:21

Friday, Jun 25, 2010 at 19:21
To give you a guide my Humvee has a 6.2 with auto trans, weighs around 3.5t and if I sit on 100kph I can get 15 -16l/100k. 100kph equates to 2,000 rpm which is just above max torque at 1800rpm. Around the max torque is the most economical rpm to sit on.
Remember they are a lazy motor and increased revs equals increased fuel consumption.
There are lots of factors that will affect fuel consumption, weight, how you drive it and what sort of trans you have all come into it.
Things like roofracks and bigger tyres/wheels which raise the gearing can all have a detrimental affect on consumption too.
I actually increase consumption travelling at 90-95 rather than at 100-105 as the engine isn't spinning at or just above the torque peak.
Peter
1996 Oka Motorhome

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AnswerID: 422124

Reply By: Rognet - Friday, Jun 25, 2010 at 21:06

Friday, Jun 25, 2010 at 21:06
Have been shopping for a Sierra 6.6 V8, some figures are quoted as low as 13l/100klm with no load on the highway. One US Forsale had a photo of the trip computer with 13.1 ???

Rognets
AnswerID: 422134

Follow Up By: Ozhumvee - Friday, Jun 25, 2010 at 22:03

Friday, Jun 25, 2010 at 22:03
The 6.2 and 6.5 are old generation mechanically injected diesels, the 6.6 Duramax is a turboed, intercooled common rail new generation diesel. Yes they go very well and are also pretty expensive ;-)
Nothing common between them at all apart from both run on diesel and are V8.
Peter
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FollowupID: 692507

Reply By: malley11 - Saturday, Jun 26, 2010 at 09:38

Saturday, Jun 26, 2010 at 09:38
Have a look at Thread 79637,i have a 91 model Nissan gq patrol and with caravan gross about 6 tonne fully loaded and get fair fuel consumption,depending where you buy fuel $1.90 a litre at Marree this year when we were there.
AnswerID: 422170

Reply By: Rockape - Saturday, Jun 26, 2010 at 16:00

Saturday, Jun 26, 2010 at 16:00
I can ring low 12s/h out of my naturally aspirated 6.5l ( day in and day out). If I belt it I get around 15l/h.

Can't see the 6.5lt turbo being much different, except if you have a heavy right foot. Also it will depend what vehicle it is in.

I find the economical revs for mine are 2200 to 2300 revs.

Have a good one.
AnswerID: 422199

Reply By: ourtrek - Sunday, Jul 18, 2010 at 19:20

Sunday, Jul 18, 2010 at 19:20
I have a 6.5 N/A in an F250 Crewcab 4WD running 35" Tyres it has a 5 speed overdrive, 3.55 Finals and towing a 18' Jayco van all up around 5500KGS.
We were getting around the 12/100klm, but down to 16/100klm its all about driving style and weather or not you are pulling (hills).

The 6.5 N/A runs well, but if you have the $$$$ then shoot for the Duramax.
GM 6.5 N/A 170HP
GM 6.5 Turbo 220HP
Duramax 330HP

You gotta compare Apples with Apples.
I want to supercharge mine when I can afford it 300HP
AnswerID: 424425

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