Engine - Oil Requirements

91chevy20

GMC NUMBER: 91-0B-110

GROUP: 0B Maintenance and Lubrication


DATE: June, 1991

CORPORATE
NUMBER: 160201


SUBJECT: ENGINE OIL REOUIREMENTS

MODELS: 1991 GMC T PICKUP (SYCLONE)


The 4.3L turbocharged engine used in the 1991 GMC Syclone is manufactured with SAE 5W-30 engine oil for break-in purposes. However, starting with the first oil change at 2,500 miles, and at all future oil changes, SAE 1OW-30 "synthetic" engine oil is required. Mobil 1 or equivalent "synthetic" oil is recommended.

See Syclone Maintenance Schedule Supplement for recommended oil change intervals.