Once again, Specialized Auto has saved my Olvo from the junkyard. It does not break often, but when it does it is something that needs their touch. This time, the 740 wagon was discharging only while I drove it - it checked out perfectly fine when towed in. All the tests were run, I had a loaner from them - and they asked if they could keep it overnight for further testing. They went in under the hood and while closely inspecting things, they noticed a slight smoky odor - which led them to a burnt voltage regulator that was only malfunction under a heavy load... The complete diagnosis and repair was under $200 and I am impressed with the service I received from each person I talked to there. Thanks again!