Engine Oil Service; Engine Oil And Filter. Changing - BMW 1989-1995 525i Service Manual

MAINTENANCE PROGRAM
020-9
ENGINE OIL SERVICE
The OIL SERVICE light in the service interval indicator
shou ld be the basic guide to schedul ing oil changes. The oil
service light should come on at or before 7.500 miles. If the
car is used primarily for short trips in slow moving traffic. or
routinely operated aggressively. the oil service light should
come on earlier.
Engine oil and filter, changing
NOTE -
There are two different types of oil filter mountings. de-
pending on model. On 525i models with the M20 en-
gine. the filter is the spin-on type.
On all other
models.
a
cartridge type filter is used. The procedure below cov-
ers both types 01 filters.
1. Run engine for a few minutes to warm engine and then
turn engine off.
2. With car on level ground. place a drain pan under oil
drain plug. See Fig. 3.
Tightening Torques
• Engine oil dra in plug to oil sump
M12 bolt. 25 Nm (18 fH b)
M22 bolt. 60 Nm (44 ft-Ib)
5. Remove oil filter:
• On M20 eng ines . position drain pan directly under the
oil filter and loosen spin-on filter by turning clockwise.
• On all eng ines except M20 engine. loosen oil filter cov -
er or oil filter cover mounting bolt.lnstall new oil filter :
• On M20 eng ines . wipe oil filter mounting flange clean .
Lubricate rubber gasket of new oil filter with fight coat-
ing of clean engine oil. Install filter by hand until gas -
ket contacts mounting flange. then turn filter another
' /2
turn.
• On all eng ines except M20 engine. remove old 0 -
ring (s) from cover and from end of bo lt, as appl icable.
Lubricate and install new O-rings in filter cover and on
filter bolt (M50.M30 eng ines only). Install new filter
ca rtridge and cover. See Fig. 4.
001 191 1
Fig. 3. Engine all drain plug (arrow ) in oil sump .
NOTE -
The car will not need to be raised if
a
shallow drain pan
is used.
3. Using a socket or box wrench. loosen drain plug from
bottom of oil sump. By hand. remove plug and let oil
drain into pan .
CAUTfON -
• Pull the loose plug away from the hole quickly to
avoid being burned by the hot oil. It will run out
quickly when the plug
is
removed.
• Use gloves to protect your hands.
4. When oil flow has diminished to an occasional drip. re-
install drain plug with a new metal sealing washer and
tighten plug .
001 1912
Fig. 4. BMW oil cartridge fil ter for M50 engine. When purcnasinq orig-
Inal equipment filter. sealing rings and a ·ring s are normally in-
cluded.
Tightening Torque
• Oil filter cove r to oil filter housing
M10 or M 12 bolt 33 Nm (24 ft-Ib)
screw-on cover 25 Nm (18 tt-Ib)
CAUTION -
Overtightening the oil filter will make the next
change much more difficult. and may deform the
gasket. causing leaks.
6. Refill crankcase with oil. Check oil level when finished
add ing oil. Oil specifications are found under Fluid and
Lubricant Specifications.
ENGINE OfL SERVICE