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A lubricating oil composition for refrigerators having a viscosity index of 250 or greater, and which contains a base oil component 1 having a kinematic viscosity of 3 mm2/s or smaller at 100° C. and a viscosity index smaller than 250 and a base oil component 2 having a kinematic viscosity of 25 mm2

A lubricating oil composition for refrigerators having a viscosity index of 250 or greater, and which contains a base oil component 1 having a kinematic viscosity of 3 mm2/s or smaller at 100° C. and a viscosity index smaller than 250 and a base oil component 2 having a kinematic viscosity of 25 mm2/s or greater at 100° C. and a viscosity index smaller than 250.

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1. A lubricating oil composition for refrigerators having a viscosity index of 250 or greater, which comprises a base oil component 1 having a kinematic viscosity of 3 mm2/s or smaller at 100° C. and a viscosity index smaller than 250 and a base oil component 2 having a kinematic viscosity of 25 mm2

1. A lubricating oil composition for refrigerators having a viscosity index of 250 or greater, which comprises a base oil component 1 having a kinematic viscosity of 3 mm2/s or smaller at 100° C. and a viscosity index smaller than 250 and a base oil component 2 having a kinematic viscosity of 25 mm2/s or greater at 100° C. and a viscosity index smaller than 250.2. The lubricating oil composition according to claim 1, wherein a difference between kinematic viscosities of base oil component 1 and base oil component 2 is 25 mm2/s or greater at 100° C.3. The lubricating oil composition according to claim 1, wherein base oil component 1 is a component represented by general formula (I):R1?O?(-A-O?)m-R2??(I) wherein R1 and R2 each represent hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, A represents an alkylene group having 2 to 8 carbon atoms, m represents an integer of 1 or greater and, when m represents an integer of 2 or greater, a plurality of groups represented by A may be a same with or different from each other.4. The lubricating oil composition according to claim 1, wherein base oil component 1 is a polyalkylene glycol.5. The lubricating oil composition according to claim 1, wherein base oil component 2 is at least one component selected from a component represented by general formula (II):R3?O?(-A′-O?)n-R4??(II) wherein R3 and R4 each represent hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, A′ represents an alkylene group having 2 to 8 carbon atoms, n represents an integer of 1 or greater and, when n represents an integer of 2 or greater, a plurality of groups represented by A′ may be a same with or different from each other; and a component represented by general formula (III):wherein R5 to R9 each represent hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, R10 represents a hydrocarbon group having 1 to 8 carbon atoms, p represents an integer of 1 or greater and, when p represents an integer of 2 or greater, a plurality of groups represented by each of R5 to R10 may be a same with or different from each other.6. The lubricating oil composition according to claim 1, wherein base oil component 2 is a polyalkylene glycol.7. The lubricating oil composition according to claim 1, wherein a ratio of an amount by weight of base oil component 1 to an amount by weight of base oil component 2 is in a range of 10:90 to 90:10.8. The lubricating oil composition according to claim 1, which is used in combination with a hydrofluorocarbon-based refrigerant or a natural substance-based refrigerant.9. The lubricating oil composition for automobile air conditioners which is described in claim 1.10. The lubricating oil composition for automobile air conditioners which is described in claim 2.11. The lubricating oil composition for automobile air conditioners which is described in claim 3.12. The lubricating oil composition for automobile air conditioners which is described in claim 4.13. The lubricating oil composition for automobile air conditioners which is described in claim 5.14. The lubricating oil composition for automobile air conditioners which is described in claim 6.15. The lubricating oil composition for automobile air conditioners which is described in claim 7.16. The lubricating oil composition for automobile air conditioners which is described in claim 8.