No makeup oil; Liberal doses of LC to top off (maybe 16oz) Previous fill was RL Lab is Blackstone; Oilguard bypass Al 2 Cr 0 Fe 7 Cu 1 Pb 0 Sn 0 Moly 713 Ni 1 Mn,Au,Ti 0 K 10 Boron 19 Ki 15 Na 11 Ca 2841 Mg 11 Phos 814 Zn 961 Barium 0 Sus Vis @210 55.8 Cst Vis @100C 9.01 Flash 380 Trace Fuel H20/Glycol 0 Insol .4 TBN 1.2 B-S COMMENTS Wear continues to look good in the latest sample from your Echo. The only thing that kept this from being a perfect report was the trace of fuel that turned up. This certainly isn't a problem level and is likely due to taking the sample without getting the oil up to operating temps. No other harmful contaminants were found and the viscosity of the oil read normally. The TBN was pretty low at just 1.2 so virtually all of the active additive in this oil has been used up. We think the 8K mile oil runs are working well but you could push on up to 9,000 miles next time.