Reply to "Turbine oil sweetening"

renewaMember

Hi macabf,

I agree with Jo, you need to also get a TAN and RPVOT done on the used oil to determine how much the oil has deterioated. In general, if the TAN has increased by 0.3 to 0.4 mgKOH/g over the new oil and the RPVOT is at 25% of the new oil, it is time to change the oil. You may also find that as the oil gets closer to the end of it's life the rate of change in RPVOT also increases. Additives used for turbine oils has somewhat changed over the last few years. The old style product had the R&O inhibitor as a separate additive whereby sweetening the system with "over treated" drums of turbine oil could be done. However, nowadays most additive packages come as one combined pacakage making sweetening difficult and ineffective. Your oil company will be able to tell you if you can sweeten the system or not and advise you based on the oil analysis results.

8/2/079:17 PM

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