OK Duke, makes sense to me. On the 72-85 PSI spec, the Dealer told me he had waited on hold for 1.5 hrs to have Honda tell him that was a Minimum! He said Honda wouldn't tell him a normal or max figure! The machine they were testing was running 105 PSI & Honda did tell him that was good. Apparently, it's no wonder your Dealer doesn't know what PSI should be at idle. I can say, your 10w-30 PSI is comparable to mine.