This happened probably sometime in the late eighties to mid-nineties, when Microchip was Frank's regular partner. Frank had his Battle Van, equipped with a lot of expensive technology. It got blown up several times, and cost a ton of money to replace.
I remember one comic where the van got blown up. Micro needs something like $100,000 to make a downpayment on a replacement.
In the next story the van gets blown up again. A furious Micro rants that they got less than 100 miles on the clock.
Which issues did this happen?