Lube Oil TAN / Water - Condition Check

Condition monitoring pass/fail for Total Acid Number (TAN) and water content against typical marine system-oil limits.

TANLubeCondition

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

TAN \leq 3.0, \quad \text{water} \leq 0.2\%

Symbol	Meaning	Unit
$TAN$	Total Acid Number	mg KOH/g
$Water$	Free + emulsified water	% v/v

Source: CIMAC WG8 Lubrication Guidelines

Condition monitoring pass/fail for Total Acid Number (TAN) and water content against typical marine system-oil limits.