This bike has 9,640 total miles with 5,240 miles on the oil. This is RP's normal 20w50 rather than their Motorcycle blend and was changed when this sample was taken. Stock engine and air cleaner with the 10 micron Harley-Davidson oil filter. The oil did thin down to a 40 weight however. I would like to hear comments on this issue and how I should respond. First post by the way and thanks in advance. Blackstone's Comments
No problems showed up in the initial sample from your Harley. All wear read close to averages for this type of engine, which is a very good indication of normal wearing parts. The universal averages show normal wear after 3500 miles on the oil. Insolubles (oil oxidation due to heat, use and blow-by) were low at 0.2%, showing good oil filtration. No fuel dilution or coolant was found. Silicon was okay indicating adequate air filtration. The TBN was 5.6, strong - 1.0 is low. Viscosity was in the SAE 40W range. Other than the low vis - the RP oil is doing a nice job.
ALUMNUM = 8 CHROMIUM = 1 IRON = 22 COPPER = 16 LEAD = 3 TIN = 0 MOLYBDENUM = 90 NICKEL = 0 MANGANESE = 1 SILVER = 0 TITANIUM = 0 POTASSIUM = 0 BORON = 28 SILICON = 10 SODIUM = 6 CALCIUM = 2995 MAGNESIUM = 125 PHOSPHORUS = 876 ZINC = 1165 BARIUM = 2 Sub Viscosity @ 210 F = 76.3 Flash Point = 410 Fuel = <0.5 Insolubles = 0.2