SECTION
Vlll
MQONEY
I4ANBLING,
SERVICE
&
MAINTENANCE
MODEL
M28J
If the engine is in an extremely dirty condition, the switch to additive oii
should be deferred until after engine has been overhauled. When changing
horn straight mineral oil to additive or co~npounded oil, after several hundred
hours
of
operation on straight mineral oil, take
the
following precautionary
steps:
a.
DO
NOT MIX additive oil and straight mineral oil. Drain straight mineral oil
from engine, change
filter and fill with additive oil.
b.
DO
NOT operate engine longer than FIVE
I-+OURS
before again changing
oil.
c,
Check oil filter for evidence of sludge or plugging. CHANGE oil and
REPUCE
oi! filter element every 10
HOURS
if sludge is evident.
Resume normal oil drain periods after sludge conditions improve.
Your
Maoney Service Center will change the engine oil in addition to perform-
ing all other service and inspection procedures needed when you bring
your
airplane in for its 50-hour; 100-hour, or annual inspections.
Excessive
oil
sludge
btaildup
indicates
that
the
oil
system
needs
servicing
ral
less
than
50-hour
Intervals.
When
changing
or
adding
oil
AVCO
Lycoming
specifies
the
lollowing grades
of
oil
to
use
for
various
ambient
air
temperatures.
VISCBSIW
CHART
Average Ambient MIL-L-6082 MIL-22851
Air Temperature
Above 80
O
F
SAE 60 SAE 60
Above 60
O
F
SAE 50
SAE
40 or SAE 50
30
O
to 90
O
F SAE 40 SAE 40
0°t0700~
SAE
30
SAE
30,
SAE
40 or
SAE
20W-40
0°t0900F
-----
SAE 2oW.-50
*
Below 40
O
F
SAE 20
SAE
30 or SAE 20VV-30
*Refer
to the latest edition of AVCO bycoming Service Instruction No.
1014.
To Next Page
Loading...
