if you havnt tried adding extra lube to your 2004.5 + 5.9's you may be surprised with the results of doing so unless your hard at hearing. Keep in mind that the additive volumes used in the test were added to 26 gallons of fuel. The power service diesel kleen ratio used in this HFRR is 1/2 the amount you would use for a 6 cetane increase, so Im sure the lube quality would improve also. The Super Tech 2-cycle oil was tested at 200:1, typically everyone uses 128:1 mix.
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2005 3/4 SRW 48RE QUAD L/B 4x4 AEM AERO