> I notice you didn't mention the Bosch Platinum Quad plug below....
> I also seem to remember you don't sell them on you web site...
> what is the reason for this?

Because Bosch does not list a Platinum Quad plug for the Vanagon, either in
their application guides or on their website.  I have not yet received even
a single inquiry from anyone interested in buying Platinum +4's for their
Vanagon, and therefore have felt no great urgency to inquire as to why Bosch
does not recommend them for the Vanagon.

> I seem to recall that some list members have reported that the
> Bosch Tri Tip Platinum plus caused the head to run hotter.

Since the tri-electrode Bosch 7 series plugs have the exact same operating
temperature as the single-electrode 7-series ones, I'm can't see why that
would be. Opinions vary as to whether performance in the Vanagon is
genuinely improved with the tri-electrode plug, but I have had no customers
report a negative impact on performance or reliability.  Reports seem to be
about evenly split between those who have noticed no improvement, and those
who report improved gas mileage or performance.

- Ron Salmon
  The Bus Depot, Inc.
  www.busdepot.com
  (215) 234-VWVW