[Vwdiesel] New to list

[HWY9FERGS at cs.com]

Hi, My name is Doug Ferguson, I'm a mechanic, currently working on light rail 
vehicles in San Jose, CA.  Lucked into an 85 Jetta turbo diesel with a new 
factory replacement engine. It has power steering and air conditioning hung on 
the front of it, and the driveline and 5 spd trans is in excellent shape.  The 
question I have is, what kind of mileage do you get with these?  I sometimes 
see people claiming 45 mpg (I know TDI's do better than that), But with this 
one, I've never even gotten quite 40. On a loaded up trip along Interstate 5, 
80mph, AC on, I got 35 mpg.  Does California have a different formulation for 
their diesel? That's one thing I've heard, but don't know whether to believe it. 
As for the tuning, I have it about as close as can be reasonably expected.  
The pump was calibrated shortly after I got the car (had to be resealed).  The 
turbo was rebuilt probably when the engine was replaced. The speedo was 
replaced at that time and now shows 80000.  Any one ever heard of polishing the 
compressor blades in the turbo?  I know that can make a BIG efficiency difference 
in jet engines.  Well anyway, I can live with the mileage, even with diesel up 
around 2.00 bucks a gal.  But any input from fellow vw diesel heads would be 
greatly appreciated.  Thanks.