>However... question to the list... wouldn't the 5W contribute to less resistance,
  >and thus better fuel economy? I see that many of the new cars specify 5W-30,
  >to help gain better fuel mileage. I also plan to run Lucas oil treatment in my newer motor.

  My only concern with 5 weight oil is that it is designed for today's engine's small clearances and tight tolerances.  Our older motors are not quite as precise, which would make me think that a thicker oil would protect better.

  As for synthetics, I have nothing but positive experiences with them in my Vanagon campers.  I just added Lucas synthetic treatment and it helped with the lifter pump down as well.

Chris S.

'84 Westy -> http://www.knology.net/~vw/vws/hershey/
'01 NB TDI -> http://www.knology.net/~vw/Beetle.jpg

1-888-VW-PARTS <- Recommended Expert Vanagon Part Source

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