Patent ID: 8367593
Filing Date: 2013-02-05
Classification: C10L,C10M,C10N

Abstract:
1. A method for improving the resistance to one or more of corrosion, oxidation, sludge and deposit formation of lubricating oil used to lubricate engines run on biodiesel fuel comprising adding to the lubricating oil an additive amount of a premix of one or more organic bases, one or more detergents and one or more anti-oxidants, wherein the premix is formed by weighing and adding either sequentially or simultaneously to a stirred heat vessel at 40 to 160 deg. C. the one or more organic bases, the one or more detergents and the one or more anti-oxidants, and mixing in said stirred heat vessel for a time from 30 to 500 minutes wherein the organic base is selected from nitrogen-containing bases of the formula: wherein R wherein R wherein R′ and R″ are the same or different C wherein N can be 1-6 and y can be 1-6 and mixtures thereof.