公开(公告)号：DE69617761D1

公开(公告)日：2002-01-24

申请号：DE69617761

申请日：1996-01-26

Applicant: LUBRIZOL CORP

Inventor： CARRICK VIRGINIA A ,  BARDASZ EWA A ,  RIPPLE DAVID E

IPC: C10M163/00 ,  C10M167/00

Abstract: A low sulfate ash lubricating oil composition comprising an oil of lubricating viscosity, 0.1 to 3.0 % of a calcium overbased acidic material, 0.1 to 2.0 % of a magnesium overbased acidic material, and at least 0.5% of a combination of an alkylene-coupled hindered phenol antioxidant and an antioxidant other than an alkylene-coupled hindered phenol antioxidant, is particularly useful for lubricating stationary gas engines.

公开(公告)号：CA2145239A1

公开(公告)日：1995-09-25

申请号：CA2145239

申请日：1995-03-22

Applicant: LUBRIZOL CORP

Inventor： BARDASZ EWA A

IPC: C10M141/06 ,  C10M141/10 ,  C10M141/12 ,  C10M163/00 ,  C10N40/25 ,  F02B3/06 ,  C10M141/00 ,  C10M141/02

Abstract: A composition of an oil of lubricating viscosity, an antioxidant, an anti-nitration agent, and optionally a borated product of an epoxide or the reactive equivalent of an epoxide, provides a desirable lubricant for diesel or natural gas-fueled engines. The composition is substantially free from metals and preferably substantially free from phosphorus. The amount of the antioxidant the antinitration agent are sufficient to reduce the amount of varnish formation in a natural gas engine.