Check out www.fueleconomy.gov  This site has information about EPA fuel
efficiencies and relative polution as gauged by the EPA.

Just taking a quick look, the Jetta 1.9 TDI vs Jetta 1.8 T, The TDI
emmits 3.4 tons less greenhouse gas (in co2 equiv.) per year, for the
same body and transmission.  However, the smog forming emissions are
much worse for the TDI (and generally for diesels).

wade

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf
Of Damon Campbell
Sent: Wednesday, October 16, 2002 9:38 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Turbo Diesel Power and Economy - global eficiency Q?

I am trying to debate the merits between several different engine
conversions (although i don't really know why... my 1.9 is running like
a champ).  My main criteria is not a moderate HP increase (although an
extra 15 or so would be great), but rather the reduction of pollution to
the world.  So this question transcends (a bit) frank's lengthy
analysis, although inspired by it.

What combinations of fuel and engine produce the least amount of
pollutants?  In this question, i am including the impacts of actually
producing/transporting/etc. the fuel, as well.  (i remember someone
mentioning this a while back, but can't find it in the archives).  How
does natural gas, or possibly even fuel cells weigh in to the
global-efficiency calc compared to your standard gas and diesel? It
sounds like a simple TDi is a viable option for these criteria, but i
want to see even *more* numbers! :-)

Thanks,
-Damon

 Frank Grunthaner <FrankGRUN@AOL.COM> wrote:
And frankly, the highly efficient TDi is probably the most effective
engine for the Vanagon. Turbo diesels are impressive, and the TDi
technology even more so.

Sorry for the soapbox,

Frank Grunthaner

'84 Westy

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