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Several points...
It's not clear that direct feed oil lubricates an unsealed IMS bearing better than splash oil alone. It might, but I'd like to see the data that shows this.
One must remove the transmission and flywheel to install the direct oil feed's custom flange. If I'm in there to install the flange, I'd replace any OEM bearing with an LN retrofit. As some have said, direct oil feed may extend the life of a degraded bearing, but why take the risk on how long this might be.
Ceramic bearings will last longer than steel ones. To me the 'better' solution solution might be direct fed oil plus a ceramic IMS bearing. My own belief is that the direct fed oil IMS Solution is the best answer.
Of course, all of this is just opinion at this point. LN has put forward data to benchmark its solutions. Let's see data the others can bring to the debate.
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