ISX 435 OIL PSI LOSS

[Joelbe]

Hello Rawze world! I've completed a 1 year study of oil pressure loss in my Cummins isx 435. I used Rotella T during all oil changes. I used 3 types of filters during this study. First is the Luber finer filter. I lost oil pressure with this filter around 7500 miles into oil change. I'd use same new filter to finish out my 12000 mile oil change. Then I switched to Fleet guard oil filter this got me about 9500 miles before pressure loss. Then again I used same filter to finish my miles out for next oil change. The best filter I found for this oil pressure loss was the Donaldson. I was able to reach my 12000 mile mark without filter change intermittently. I hope I helped with someone's headache with this common problem with the ISX. Next year I may switch oil and try 3 different filters to find even better solution.