The rotation is minimal -- only about 25 degrees or so, I'd guess.

They normally last 200,000 miles or longer, or 30 years (the ones on the 220D up front are still OK).

Hard to argue with that.

Use Sylglide or dishwashing detergent (straight, no water) to lube the bushing going in.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!