In the reliability thread, the Powerflex engine mount bushing inserts were brought up, and now that it's years later, I was wondering if anyone has any good anecdotes on them helping noticeably.

Have you had a newer mount, noticed a certain life based on your driving over its entire life, had it replaced and used the inserts, and then had that new mount last longer than before?

I'm interested in installing them, it makes sense in theory, but it helps to know if others have more concrete data confirming their benefit.

 

The benefit is less engine movement, and a more direct throttle response and feel. The downside is that side is more vibration and noise being transmitted through the frame rail. You’ll notice more vibrations at idle, and more noise during driving.