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He says the double row bearing failure will make itself known....so, if you hear it you likely have safe seconds or minutes to shut it down.
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Dual row bearings do take longer to fail, because they have twice the load carrying capacity over a single row.
That said, if a bearing goes long enough to be heard the oil filter has already become clogged with a large amount of debris which pops the bypass open (non-filtered oil) and feeds material laden oil to the main and rod bearings.
There are pros and cons of OEM dual row bearings, remember, bearing failure is generally NOT what takes the complete engine out, its the harmful ferromagnetic wear materials that create secondary conditions that are much more costly to repair and harder to overcome.
So, while a dual row OEM IMSB is stronger, it has twice as many wear components to create wear debris and the engine runs longer before the bearing completes stage 4 failure, meaning that debris has longer to do its job of chewing everything apart.
Retrofitting the IMSB and following the service interval set forth by the Mfr of the replacement bearing that you choose is the key.