Claims
- 1. A lubricating oil composition formulated for use as a crankcase lubricating oil composition for gasoline or diesel engines consisting essentially of a major amount of a mineral oil of a lubricating viscosity which has incorporated therein (i) about 0.20 weight percent of a glycerol partial ester said partial ester being a mixture of glycerol monooleate and glycerol dioleate, said mixture having weight ratio of 3 parts of glycerol monooleate to 2 parts of glycerol dioleate said ester providing a fuel economy improvement of about 1 to 3 percent when said lubricating oil composition is employed in the crankcase of said engines, (ii) an ashless dispersant, (iii) a metal detergent additive (iv) a zinc dihydrocarbyl dithiophosphate anti-wear additive and (v) an antioxidant, said dispersant, detergent, anti-wear additive and antioxidant being present in conventional amounts to provide their normal attendant functions.
- 2. The composition of claim 1 wherein said lubricating oil composition contains a viscosity index improver.
- 3. The composition of claim 1 wherein said composition is a gasoline engine lubricating oil composition.
- 4. The composition of claim 1 wherein said composition is a diesel engine lubricating oil composition.
Parent Case Info
This is a continuation of application Ser. No. 260,987, filed May 6, 1981, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
2911367 |
Bans et al. |
Nov 1959 |
|
3933659 |
Lyle et al. |
Jan 1976 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
260987 |
May 1981 |
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