Any one have any ideas?



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__________________
Josh


2005 E320 CDI

2002 VW Jetta TDI

Bump. I'm still interested in this topic, and am curious to get your input.

__________________
Josh


2005 E320 CDI

2002 VW Jetta TDI

When I worked for Chrysler, they had a Diplomat running at 235F. with a high pressure cooling system. It got about 15% better fuel economy than the standard vehicle.

Never decided to go forward with a prototype vehicle because of durability and maintenance issues.

Suffice it to say...........the warmer you run the engine, the better the fuel economy.