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Polyisobutylene Succinimide (PIBSI): The Workhorse Ashless Dispersant in Engine Oils
Polyisobutylene succinimide (PIBSI) is the essential ashless dispersant in engine oils. Compare T151, T154, T157, T161 grades, soot dispersion chemistry and selection guidance.
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Polyisobutylene Succinimide Dispersant Guide
Polyisobutylene succinimide dispersants manage soot and sludge in engine oil through steric stabilization. Learn the mechanism, grades, testing and selection.
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Engine Oil Dispersants: Soot and Sludge Control
Engine oil dispersants keep soot and sludge suspended so engines stay clean. Learn succinimide chemistry, soot control, test methods and grade selection.
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Polyisobutylene Maleic Acid Anhydride: The PIBSA Chemistry Behind Dispersants
Polyisobutylene maleic acid anhydride (PIBSA) is the thermal adduct of PIB and maleic anhydride — the intermediate for succinimide ashless dispersants. Learn the chemistry.