Used oil analysis · tbn-retention
TBN Retention
Evaluates remaining alkalinity against the fresh-oil baseline.
Where to use
Evaluates remaining alkalinity against the fresh-oil baseline.
Methodology
Normalizes submitted data, calculates derived indicators and applies transparent warning rules.
Standards context
Console version
TbnRetention.exe input.csv output.json
CSV header: used_tbn,fresh_tbn
Limitations
This screening result does not replace manufacturer requirements, an accredited laboratory report or engineering diagnostics. Limits must be configured for the engine, lubricant, method and asset history.