The majority of electrical issues are caused by loose or dirty battery / ground (block, frame, starter, etc..) cables. CLEAN AND TIGHTEN YOUR...
IR2141 is the best 3/4 impact out there!
Do an A service (fuel filters and chassis grease) between B services (oil change + A service)!
The ved16 is proving to be a good motor. We (volvo dealership) are not seeing too many problems. The EGR problems have been adressed, new valve!
Is the zerk ok?
I would stay away from the ved12B. the C is a better motor, the D has egr issues. But it is a good motor. Are you sure a 2006 has a B motor in it?