The letter sizes are tolerances on piston diameter which are pretty finely tuned to within 0.010mm (0.0004 inches)

Piston Marked C 80.980-80.990 mm
Piston Marked D 80.990-81.000 mm
Piston Marked E 81.000-81.010 mm

The parts drawings are hard to decipher as they do not show a clear break down of the system. What I can tell you is 97 850 AWD (Canada only I understand in NA) and 98 V/S AWD and 98 V70XC had a different evap system and parts of the fuel system to 99- years. Many of the parts are now no longer avai...

that five minutes must have felt like an hour. Ive gotten out of my car on busier roads and sprinted across traffic just to save a turtle, I'm sure you could stop for a poor volvo. I wouldn't bother using any of that engine since the rings may be burnt in addition to head warped. the fact the oil in...