High Oil Temperature; Excessive Oil Consumption - Superior Vantage Engine O-360 SERIES Maintenance Manual

Probable Cause/ Added Possible Indications
Insufficient air cooling
Insufficient oil supply
Low grade of oil
Clogged oil lines or strainers
Excessive blow-by; black or wet exhaust oil on
belly
Failing or failed bearing
Defective temperature gage
Probable Cause/ Added Possible Indications
Low grade of oil
Failing or failed bearings
Worn piston rings; excessive blow-by
Incorrect installation of piston rings
Failure of rings to seat on new cylinders; oil
fouled plugs
Oil siphoned from engine in flight; oil on firewall
or in engine compartment
© March 2006 Superior Air Parts Inc.
Maintenance Manual
O-360 and IO-360 Series Engines
Table 72-00-01.8 • High Oil Temperature
Table 72-00-01.9 • Excessive Oil Consumption
Correction
Check air inlet and outlet for deformation or
obstruction.
Fill to proper level with specified oil.
Replace with oil conforming to specifications.
Remove and clean oil strainers.
Check condition of engine rings. Replace if
worn or damaged.
Examine sump for metal particles. If found,
engine overhaul may be required.
Replace gage.
Correction
Fill tank with oil of proper weight and grade.
Check sump oil for metal particles.
Install new rings.
Install new rings. Inspect barrel, rehone or
replace if neccessary
Use mineral base oil. Climb to cruise altitude at
full power and operate at 75% cruise power
setting until oil consumption stabilizes. See
Cylinder Break-In Procedures Section of this
manual.
Insure that oil filler cap is tight and that o-ring is
in good condition. Insure that breather hose exit
is cut and located to avoid creating a vacuum in
the breather hose.
4
72-00-01
Testing and Fault Isolation