It's an inherent design defect, the camshaft sits farther up in the engine block and the oil galleries do not supply the camshaft oil gallery properly. The Hellcat oil pump is a stop gap , the design is flawed not the pump but block design. Ram won't do anything about it and after this year the engine is no longer put in Rams.
I have met at least one guy with 75K on his Hemi and he told me it started around 60K. He does mostly highway driving and changes oil at 5k with Mobil 1. He could have been full of crap who knows.
I worry more about the MDX then I do the oil pressure. My oil pressure gauge always read low on my 2021 Ram FWIW.
Seems like any of the Big 3 will have engine issues in the 1/2 ton department.
The 5L Coyote is pretty bullet proof.
