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There are many examples where common "engineering' sense proved disastrously wrong: the Titanic, the Tacoma Narrows bridge, the Challenger space shuttle, etc. Moreover, people assume that more oil is better simply because it's more oil. However, a fire hose doesn't water a small vegetable patch any better than a garden hose; a 10' deep swimming pool doesn't make a swimmer any wetter than a 5' deep one.
BTW: where are the facts / data that suggests dual row bearings fail because they don't get enough oil. Remember these failing bearings are sealed and therefore internally lubricated. Pumping external oil onto a sealed bearing won't help much if at all. The fix is to replace the OEM bearing with an unsealed dual row one. To date, there are no dual row LN Retrofit bearings failures even though these retrofits are splash oil lubricated. DOF contends it will extend the operating lifetimes of unsealed bearings, but the vendors won't say by how much. If they have, I haven't been able to find the estimate.
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