Pontiac FIREBIRD 1972 Service Manual page 15

GENERAL INFORMATION AND LUBRICATION 0-13
ALL
MODELS
CURBROCKER
PANEL HEIGHTS
Fig. 0-25 Rocker Panel Heights
-
X Series
LUBRICATION
ITEMS REQUIRING LUBRICATION OR SERVICE AT 4 MONTHS OR 6,000 MILE INTERVALS,
WHICHEVER OCCURS FIRST
ENGINE OIL
SAE 5W-20 oils are not recommended for sustained high-
speed driving. SAE 30 oils may be used at temperatures
Change as outlined below. .above 40°F. All engines are equipped with specially engi-
neered piston rings. These rings allow oil to flow freely on
Oil change interval should be lowered to two (2) months the cylinder walls during the break-in period. Therefore,
or 3,000 miles if the car is to be operated under adverse oil consumption may be higher during the break-in period
conditions such as extended idling, dusty conditions,
than it will be afterward. Oil which is labeled for service
when the engine is consistently not allowed to reach full SE or MS and conforms to GM Standard 6041M should
operating temperature, or trailer pulling. be used.