Overtaking, inevitably, often becomes necessary in normal motoring, and it rarely helps your fuel economy, although there are some situations when it actually can ñ such as when it lets you escape from being stuck behind a driver who stops…
HGV
Looking ahead
Hello Doctor. It would seem that there’s no escaping the fact that diesel power is in for something of a rough time over the next few years, and we must wonder in what form it may survive, both in private…
The Extra Mile
In these pages, we’ve never really given much recognition to the phenomenon of ìhypermilingî, as practised by those who are seriously devoted to achieving maximum fuel economy in their cars. It’s surprising to discover that hypermiling, something essentially imported from…
Turbo turmoil
Dear Doctor Diesel, How do turbochargers get contaminated with whatever they do, for the vanes to get stuck? The air enters via the air filter and then arrives at the turbo to proceed to the inlet manifold via the intercooler…
Honoured reader’s views
Good morning to you Doctor. I have just seen the letter from Norman Budge (Issue 352) regarding recent increases in HGV speed limits. Yes, he is correct in saying that the limit for normal roads has increased from 40 to…
The Extra Mile
With gas and diesel prices currently hovering around the 40 to 45p per litre mark in the USA, you might wonder why drivers are that bothered about fuel consumption, but amazingly the hypermiling fuel-saving movement has taken off strongly and…
Big issue
How events can suddenly take an unexpected turn when a large company does something naughty. Although your editor has, quite rightly, recommended that we sit tight, put a brave face on things and just see how events pan out. I…
Dear Bill
This month Doctor Diesel has a question of his own for veteran HGV driver, Bill Shepherd.