I replaced my speedo a couple of years agos with a brand new unit. I
checked it aginst one of those speedometer test zones on a local highway
here, and found the new unit to be "dead-on balls accurate". The old
unit had always read 5 mph off. In other words I was actually doing less
than the speedometer showed. Nowadays I can manage the truck lane most
of the time, though some drivers get a little anxious if I don't move
over rather quickly.

Regards,

John Rodgers
88 GL Driver

Parker Beeson wrote:

> John Rodgers said: "I drive my van at 3800 rpm on the open road. On a
> level bit of road that
> pegs the speedo needle at 63 mph. That is a bit more than 55, but I do
> it."
>
> Just finished a 4,000 mile road trip all through the west and also
> cruised at 3,800rpm because that is where the van felt best for gas
> mileage, handling (14s) etc. Near as I can tell I was getting 20mpg or
> a bit more. All four gas reserve tank(s) lines I learned were bad and
> leaked gas if I topped off the tank so I only put in 10 gallons at a
> time and could always get better than 200 miles between fill-ups.
>
> My speedo also says 63 mph at this RPM, but my GPS said 58 mph actual
> speed. I found myself using cruise control almost the entire time as if
> I didn't I would look down and be at 4,200-4,400 because the WBX is so
> smooth that you don't even notice or hear it. Ha! I got exactly one
> "bird" finger raised at me and that was skirting LA on the I5 near Six
> Flags/Santa Clarita.
>
> Anyway, whole point is that if you have a GPS you should compare as
> your speedo may be off like mine is. Happy about these posts as I was
> also wondering about safe cruising RPMS. Would love a 5th gear for
> those long flat open roads.
>
> Parker
> '89 GL Westy
>