1997 Merc. 5.7L EFI Alpha with power steering & 1998 O/D. Leak from P/S pump hose 2 years ago. Tightened hose clamp and added Dexron III. Last year P/S didn't always seem to be working normally. End of Oct 2004 steering was really stiff. With eng. off it took 2 hands and plenty of muscle just to turn wheel. P/S control unit has no grease fittings. I have always regularly greased the three fittings on the O/D. [/LIST]