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Reply to "What is the limit for Viscosity changes in Engin oil under use?"

For large engines using residual fuels one of the four parameters for changing/discarding/condemning engine oils is change is KV 40 and KV 100

1. KV 40 Plus (+) or minus (-): 25% change from original viscosity.
2. KV 100 Plus (+) or minus (-) 15% change from original viscosity.

Hussam
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