My 08 F250 6.4 has 600 HP. I can go up to 750 HP before my OEM filter doesn’t flow enough air and then only if I’m racing it, which I don’t do. I regularly have Blackstone Labs check my oil. Every thing now checks good. While my DPF filter was on fuel in oil was at 13%. That is the main reason I took the DPF filter off and tuned the truck.
Has any of you that has a K&N filter ever had your oil checked? I wonder what you would find?
Lynwood
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