Mazda 1978 GLC Instructions; Maintenance And Servicing page 50

CHANGING ENGINE OIL FILTER
The oil filter should be changed each 6,250 miles or
6 months, whichever occurs first.
1.
Place a pan under the filter to catch oil 'drips.
2. Remove the oil filter cartridge with a suitable wrench.
3. With a clean rag, wipe off the mounting surface
on the engine.
4. Apply engine oil to the rubber seals on the new filter
cartridge.
5. Install the cartridge into place and tighten
it
hand
tight only. Do not use the wrench.
6. After adding the oil, start the engine and check
for leaks around the oil filter seal. Check the oil
level and add to F mark if necessary.
CHANGING OR ADDING OTHER
LUBRICANTS AND FLUIDS
See the "Recommended
Lubricants"
chart for lubricant
types and service intervals for the following items.
CHECKING AUTOMATIC TRANSMISSION FLUID
LEVEL
1. Park the vehicle on the level ground and set the
parking brake firmly.
2. Run the engine at idle speed for about two minutes.
3. Move the selector lever through all of the gear po-
sitions and set it to the P (PAR K) position.
7-6
4. Wipe any dirt from the dipstick cap, pull out the
dipstick, wipe clean and reinsert fully.
5. Pull out again, check the level on the "COLD"
side of the dipstick. The level should be maintained
between the marked Land F on the gauge.
6. If the level is near or at the L line, add fluid through
the filler tube. Do not overfill.
7. If the vehicle has been driven and is thoroughly
warmed up, check the level on the HOT side of
the dipstick.
I
L F COLD l = =
L fHOTl==
Dipstick gauge