Thickening effects of interactions between engine oil additives

L. Bartha, G. Kis, J. Auer, Z. Kocsis

Research output: Contribution to journalArticle

8 Citations (Scopus)


Additives of low and high molecular weight used as performance enhancers in engine oil formulations can interact through their polar functional groups to form associates and complexes. These often have a significant thickening effect that could substitute for viscosity and viscosity-index improvers. We therefore investigated the stability of these associates to thermal degradation, oxidation, and mechanical decomposition, in an attempt to seek information about their feasibility.

Original languageEnglish
Pages (from-to)231-249
Number of pages19
JournalLubrication Science
Issue number3
Publication statusPublished - May 2001


  • Additives
  • Ca phenate
  • Complexes
  • Physicochemical interactions
  • Succinimides
  • Thickening
  • Viscosity improvers
  • Viscosity-index improvers
  • ZnDDP

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Materials Chemistry

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