AnswerID: 132996 Submitted: Tuesday, Oct 04, 2005 at 16:04
John L G
replied:
Steve
I have been driving a stretched 75 series crew cab 92 model for some years and your consumption sounds pretty familiar however it's a pity, and I think a tad selfish, that you couldn't have continued up the coast for another couple of tank fulls to give us more info with higher speeds.
These trucks seem reasonably fuel efficient up to 100kms/hr but anything above that and you would swear you had a hole in the tank. As you so rightly say, they tend to end up full of stuff and must admit to never assessing consumption when empty, but in my experience, it doesn't seem to make much difference once they are rolling and the speed is kept below thye magical 100 click barrier.
I installed a turbo on mine last year and seems to have made no real difference one way or the other to consumption apart from the obvious power difference which transformed the vehicle from a bit of a slug to a much easier drive.
Ciao for now
John G
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