I'm ashamed to say I've ridden only 1,000 miles in the last 13 months. My voltage regulator died and I'm designing a new one. It's a project that has taken more time and money than I care to admit. Meanwhile, I "exercise" my bike once a week with no charging circuit, so I don't venture more than 20 minutes away from home. So these miles represent 30-mile highway rides once or twice a week over the last 13 months. All I wanted to learn from this analysis is whether it's OK to keep the oil. I hate to throw it away with so few miles. The wear numbers aren't very meaningful. Oil Mobil Delvac 1 5w-40 Bike 1994 Honda VFR 750F Miles on Bike 40,760 Miles on Oil 1,000 Lab Schaeffers Cu 3 Fe 2 Cr 0 Al 1 Pb 0 Mo 1 P 1069 Zn 810 Mg 458 Ca 1439 antifreeze .0% fuel dilution N H20 .0% Si 2 viscosity @ 100*C 11.11 cSt sulfer 56% oxidation 9% nitration 2% So it looks like I can keep the oil. I'm surprised that it has thinned this much in only 1,000 miles. I'm at a loss to explain the sulfer. Lab error?