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TBN Booster 400 for Lubricant: Treat Rate Guide

A formulator’s guide to using TBN booster 400 for lubricant — calculating treat rate from target TBN, managing ash and blending correctly into oils and greases.
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01 What is overbased calcium sulfonate used for?

Overbased calcium sulfonate is a type of complex chemical compound that is used as an additive in lubricating oils and greases. It is formed through a process called “overbasing,” which involves neutralizing sulfonic acid with excess calcium oxide (CaO) or calcium hydroxide (Ca(OH)2). The resulting compound is a calcium salt of the sulfonic acid, but…
