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Old 10-17-2009, 08:42 AM   #3 (permalink)
JasonG
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Join Date: May 2009
Location: Charlotte NC / York SC
Posts: 726

05 DMax - '05 Chevrolet 2500HD
90 day: 18.48 mpg (US)
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Quote:
Originally Posted by Spidybot View Post
Hi All


The tranny enganges permanently at 65 km/h (GPS speed), so figures have no 'tranny slip' influence.

What amazes me is the reported consumption:

80 km/h = 10,87 km/l = 25,82 mpg
90 km/h = 10,53 km/l = 25,00 mpg
100 km/h = 9,35 km/l = 22,20 mpg
110 km/h = 9,90 km/l = 23,51 mpg
120 km/h = 9,26 km/l = 21,99 mpg
130 km/h = 12,99 km/l = 30,84 mpg
While we dont have that nice littel Getz here something doesnt seem right.
You said the engine engages permanantly at 65kmh? Please define.
65 kmh seems awfully low for the torque converter to lock-up at.
Most cars dont lock-up until highway speeds are reached at 100-110 kmh.
Do you mean it makes its last shift at 65? if so it may be locking-up at 120, which explains the slight FE drop as the engine loads a bit. Then at 130 the diesel finds its curve and is ready to cruise.
Alternate question, at 130 how far is the pedal down? Most of the way? Just guestimating but 1.5L X 82HP + small turbo = maxing out at 130 I would think, unless your car looks like Bassjoos'

Oh, and welcome
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I can't understand why my MPG's are so low..........
21,000lb, 41' Toy Haulers are rough on FE!
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