I know what it is like taking care of a fleet.

Actually I don't think that the "bad" p;ug looks so bad for its mileage, that Is why I suggested a change, wire check/cleaning, and a watchful eye.

In 1972 I drive a '66 Dodge with a slant 6 that had 100,000 miles and NEVER had an oil change. The PO just changed the filter and added oil. He was trying to minimize his expense and he drove a lot of miles.

The car had been off the road for two years in the woods and I got it for free if I could start it. I ended up driving it home with a motorcycle fuel tank of fresh gasoline tied to the windhsield wiper with a hose to the carb.

I had 5 or 6 sets of plugs and had to change them about every 500 miles. I used to sand blast a coffee can of fouled plugs at work every to months or so.

So the plugs really don't look that bad to me!
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'96 855R,'64 PV544 driver, '67 P1800 basket case, '95 855, '95 854, the first three are mine, heh, heh, 415,000 miles put on 9 bricks