1991 LEXUS SC300 oil viscosity

ENGINE TUNE±UP
INSPECTION OF ENGINE COOLANT
1. INSPECT ENGINE COOLANT LEVEL AT RESERVOIRTANK
The coolant level should be above the ºCOLD LEVELº at
normal temperature (20 5C (68 5F)).
If low, check for leaks and add coolant up to the ºCOLD
LEVELº.
2. INSPECT ENGINE COOLANT QUALITY There should be any excessive deposits of rust or scales
around the radiator cap or reservoir tank filler hole, and the
coolant should be free from oil.
If excessively dirty, clean the coolant passages and replace
the coolant.
INSPECTION OF ENGINE OIL
1. INSPECT ENGINE OIL QUALITYCheck the oil for deterioration, entry of water, discoloring or
thinning.
If the quality is poor, replace the oil.
Oil grade: API grade SG, Energy±Conserving II multigrade.
Recommended viscosity is as shown, with SAE
5W±30 being the preferred engine oil.
Drain and refill oil capacity: w/ oil filter change4.8 liter (5.1 US qts, 4.2 lmp. qts)
w/o oil filter change 4.5 liter (4.8 US qts, 4.0 lmp. qts)
2. INSPECT ENGINE OIL LEVEL The oil level should be between the ºLº and ºFº marks on the
dipstick.
If low, check for leakage and add oil up to ºFº mark.
EM±8
±
ENGINE MECHANICAL Engine Tune±Up
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PREPARATION
SST (SPECIAL SERVICE TOOLS)
RECOMMENDED TOOLS
EQUIPMENT
Part NameNote
Oil pressure gauge
Precision straight edgeOil pump
Torque wrench
LUBRICANT
Item
Capacity
ClassificationItemLitersUS qtslmp. qtsClassification
Engine oilAPI grade SG, Energy±Conserving II
Dry fill606353multigrade. Recommended viscosity is
Drain and refill6.06.35.3gy
as shown, with SAE 5W±30 being the
w/ Oil filter change 4.85.14.2preferred engine oil.
w/o Oil filter change4.54.85.3
g
SSM (SPECIAL SERVICE MATERIALS)
Part NamePart No.Use etc.
Seal packing or equivalent08826±00080Oil pump, Oil pan
Adhesive 1344,
Three bond 1344,08833±00080Oil pressure switch
Loctite 242 or equivalent
LU±4±
LUBRICATION SYSTEM System Circuit, Operation
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OIL PRESSURE CHECK
1. CHECK ENGINE OIL QUALITYCheck the oil for deterioration, entry of water, discoloring or
thinning.
If the quality is poor, replace the oil.
Oil grade: API grade SG, Energy±Conserving II multi- grade. Recommended viscosity is as shown,
with SAE 5W±30 being the preferred engine
oil.
2. CHECK ENGINE OIL LEVEL The oil level should be between the ºLº and ºFº marks on the
dipstick.
If low, check for the leakage and add oil up to ºFº mark.
3. REMOVE ENGINE UNDER COVER
4. REMOVE OIL PRESSURE SWITCH, AND INSTALL OIL PRESSURE GAUGE
5. WARM UP ENGINE
Allow the engine to warm up to normal operating tempera-
ture.
6. CHECK OIL PRESSURE
Oil pressure:
At idling 29 kPa (0.3 kgf/cm
2, 4.3 psi)
or more
At 3,000 rpm 294±588 kPa (3.0±6.0 kg/cm
2, 43±85 psi)
7. REMOVE OIL PRESSURE GAUGE AND REINSTALL OILPRESSURE SWITCH
Apply adhesive to two or three threads of the oil pressure
switch.
Adhesive: Part No. 08833±00080, THREE BOND 1344,
LOCTITE 242 or equivalent
8. START ENGINE AND CHECK FOR LEAKS
9. REINSTALL ENGINE UNDER COVER
±
LUBRICATION SYSTEM Oil Pressure CheckLU±5
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2. CONNECT REAR DRIVE SHAFTS
(a) Align the matchmarks on the side gear shaft and drive shafts.
(b) Apply a light coat of engine oil on the threads of the bolts.
(c) Temporarily install the 12 hexagon bolts and 4 washers.
(d) Using a hexagon wrench, torque the bolts.
Torque: 83 N Vm (850 kgf Vcm, 61 ft Vlbf)
3. INSTALL PROPELLER SHAFT
(See page PR±12 or 28)
4. FILL DIFFERENTIAL WITH OIL
Oil grade: API GL±5 Hypoid Gear Oil
Viscosity: Above±18
C (0
F) SAE 90
Below±18
C (0
F) SAE 80W±90 or 80W
Capacity:
1.35 liters (1.42 US qts, 1.19 lmp qts)
SA±84±
SUSPENSION AND AXLE REAR DIFFERENTIAL
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5. INSTALL SIDE GEAR SHAFT OIL SEAL
(a) Using SST and a hammer, drive in a new oil seal.SST 09608±32010, 09608±35014 (09608±06020)
(b) Apply MP grease to the oil seal lip.
6. INSTALL SIDE GEAR SHAFT
(a) Install a new snap ring to the side gear shaft.
(b) Using a hammer and brass bar, tap in the side gear shaft to
the differential.
NOTICE: Be careful not damage the side gear shaft and oil
seal.
7. CHECK INSTALLATION OF SIDE GEAR SHAFT
(a) Check that there is 2±3 mm (0.08±0.12 in.) of play in axialdirection.
(b) Check that the side gear shaft will not come out by trying to pull it out by hand.
8. INSTALL REAR DRIVE SHAFT
(See page SA±65)
9. CHECK DIFFERENTIAL OIL LEVEL Fill with hypoid gear oil if necessary.
Oil grade:
API GL±5 Hypoid Gear Oil
Viscosity: Above±18
C (0
F) SAE 90
Below±18
C (0
F) SAE 80W±90 or 80W
Capacity: 1.35 liters (1.43 US qts, 1.19 lmp. qts)
SA±80±
SUSPENSION AND AXLE REAR DIFFERENTIAL
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