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Engine lube oil survey for S.E.M.T. Pielstick engines   (TMF 2005/106 indice 01)

Property Method Unit Grade Lower limit Upper limit
Viscosity @40°c ISO 3104 (ASTM D445) mm²/s SAE 30 75 Alarm level = 120 cSt / Rejection = 135 cSt
SAE 40 108 Alarm level = 180 cSt / Rejection = 200 cSt
Viscosity @100°c SAE 30 9 Alarm level = 13 cSt / Rejection = 14 cSt
SAE 40 12 Alarm level = 17 cSt / Rejection = 18,5 cSt
Flash point ISO 2719 (ASTM D93) °C Drop of 50°C with respect to that of fresh oil is alarming / Rejection limit < 150°C
Water ISO 3733 (ASTM D95) % vol. Alarm level = 0.2% / Rejection = 0.5%
Pentane Insolubles ASTM D893/B % mass Alarm level = 1.5% / Rejection = 2.5%
Base Number ISO 3771 (ASTM D2896) mgKOH/g 8 min. if running on distillate DMX (S = 1% max.)
15 min. if running on distillates DMA / DMC (S = 2% max.)
20 min. if running on residual fuels RMA10 / RMD15 (S = 4% max.)
25 min. if running on residual fuels RME25 / RML55 (S = 5% max.)
Wear & contamination elements There are no specific limits. These are depending on several factors as fuel quality, running conditions, treatment efficiency, materials used for engine components. It is necessary to plot successive results on a curve and follow its trend to determine if there is an anomaly or no.
Aluminium ICP mg/kg
Chromium
Copper
Iron
Lead
Nickel
Silicon
Sodium
Tin
Vanadium