It's interesting when someone says "I been driving my car for ---- years and this problem hasn't happened to me so I don't believe it's a problem."
I would like to point out that my company had 1600 Dodge Intrepids, (1996,1997,1998). Half of them failed transmissions at about 60k. The guy's who didn't have tranny trouble thought the car was great. The one's who had trouble, thought the car sucked. Half could say "I never had that problem!" So it is with the Contours. If you don't have the problem, great. But don't be too quick to poopoo (or is it poo-poo?) the idea.
Crank whip exists in ALL cranks (All engines, reciprocating compressors, steam engines, etc...). The question isn't whether whip exist, just whether the whip can be contained or controlled by the bearings, dampers, design. The best oil (I don't care, pick your brand) will not stop it. When the crank distorts beyong the physical limits of the bearing, it will push through any brand oil film and ruin the bearing. You can't stop it with oil. Denying it exists doesn't work either.
The whip on your car may be a little different than mine or others because of variances in the densities of the crank metal, couterbalance weight differences, differences in machining of the journals, and different bearing clearances. You may have a "loose" motor and the whip doesn't extend past clearance. Another car may have a "tight" motor and the whip hits the bearing.
I am glad you never had a problem with it and I hope you never do. But some have and some will and it is good to discuss reasons and ways to prevent it. The DMD is one way to reduce the displacement in whip by dampening the vibration displacement.
