Have you tried a different oil guage?
Several other things could be the cause,worn bearings,weak oil pump,,,
Try hooking up a newer oil guage in the engine compartment for a test and see if it shows a higher reading.


There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!