Piper Dakota Maintenance Manual page 466

Trouble
Excessive oil consumption
(cont.)
Inaccurate pressure read-
ings.
Overpriming.
Inaccurate pressure
readings.
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
CHART 7101. TROUBLESHOOTING (ENGINE) (CONT)
Low grade of oil.
Failure of rings to seat
(new nitrided cylinders).
Cold weather.
Cold weather.
Cold weather.
Cause
2H22
Remedy
Fill with oil conforming
to specifications.
Use mineral base oil. Climb
to cruise altitude at full
power and operate at 75%
cruise power setting until oil
consumption stabilizes.
In extremely cold weather
oil pressure readings up to
100 pounds do not nec-
essarily indicate malfunc-
tioning.
Rotate the crankshaft in the
counterclockwise direction
with throttle full open
and ignition switch OFF.
High or low pressure read
ings due to extremely cold
weather are not necessarily
a malfunction. Small and
long oil lines will not trans-
fer pressure readings accu-
rately until engine is quite
warm.
71 - 02 - 00
Page - 71-07
Reissued: August 1, 1986