Re: GT Diesel - sudden MPG increase
Varying driving conditions of users means it is very difficult to get a representative sample. Nevertheless it is probably a combination of ; lighter foot, longer motorway driving, engine slackening off after run-in, and rising air temp.
The last point mentioned is the interesting one for me. Truckie folklore has it that diesels drink more in winter conditions. In addition they will also tell you that you get better MPG when driving through the night in Summer conditions! They reckon the reason for that is a combination of higher engine temps combined with cooler denser air being fed through.
Now whatever the real reasons are I can vouch for the effect. I used to own a Scania 340 and maintained a fuel efficency spread sheet.
Interesting don't you think and I'd be pleased to hear from engineers on whether there was any real truth in it or whether it is just perception.
"The Drivel Devil'
"On a scale of one to ten, with ten being a sensitive, new-age man and one being a chimp throwing faeces, I'd put you more towards the monkey axis"