RobertRyan wrote:
No it is not. A diesel has much better longevity. That is why you get 350,000 a I million miles out of a relatively small one.
There are plenty of 300-500k+ Ford 4.6, 5.2, and 6.8L engines out there. Most Crown Vic taxis started life as a cop car and then get to do taxy duty until they die. There are a few Million Mile Ford Vans out there as well. No reason why a gas engine can't last a long time.
Efficiency is from the oil used as fuel ,longevity from construction and the Diesels operating charateristics.
There is nothing "special" about Diesel's construction other than that it is built tougher due to the compression ratio and load characteristics of compression ignition. No reason you can't overbuild a gas engine.
The Ecoboost was partially developed in Australia using Ford Australia's expertise using the 4 Litre Turbo Barra engine.
I think there is some confusion here. I'm 99.9% positive the 3.5 Ecoboost has nothing to do with the Austrailian engine. Typically Ford US and Ford Austrailia have been 2 separate divisions. Ford has been playing with turbos since the early 80s. The 2.3 OHC was one of their first stabs at it and it was a very good engine.
But, from what I gathered on the web, the 3.5 Ecoboost was a joint develepment with Ford, Bosch (who did the DI work) and some other German engine company. It's actually based on Ford's 3.5 V6 which was around since 2007.