I have been running 2 cycle oil at a rate of 1/2oz per gallon since ULSD was introduced. Adds just a bit more lubrication for the injector pump and nozzles. I use 2 cycle oil in the truck and tractors.
Try this, next time you fuel your truck leave it running at the pump, put in 12-16oz of 2cycle oil and then fill the tank. By the time you are finished fueling you will likely be able to tell the engine is quieter.
2007 Silverado Classic 2500HD, EC, SB, 4x4 LBZ, Allison 1000 6 speed, Banks 3" Intercooler Tube, BD LH Exhaust Manifold, Diamod Eye Downpipe, MBRP 4" Cat Delete Pipe, Banks 4" Monster Exhaust, GoodYear 265/75R 16E, Eagle Alloy 16"x8" wheels, Autometer EGT/Boost gauges, 50 gal in bed aux fuel tank.
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