Engine oil and filter

Engine / Engine oil and filter

1 The engine oil level should be checked at the weekly service (see “Routine Maintenance”). Preferably check the level cold, first thing in the morning or if the engine has been running, allow at least ten minutes to elapse after switching off to permit the oil to drain.

2 Withdraw the dipstick, wipe it clean on non-fluffy material, re-insert it and then withdraw it for the second time (photo).

2.2 Withdrawing engine oil dipstick (1116 cc)

3 The oil level should be between the MIN and MAX marks. If not, top up with specified oil to the MAX mark. Pour the oil slowly through the filler orifice on the rocker cover.

To raise the oil level from MIN to MAX will require approximately 1.1 litre (2.0 pints) (photos).

2.3A Typical dipstick markings

2.3B Topping up engine oil (1116 cc)

4 At the intervals specified in “Routine Maintenance” the oil and filter should be renewed.

5 Have the engine at normal operating temperature, remove the oil filler cap.

6 Place a suitable container under the sump pan. Unscrew and remove the oil drain plug and allow the oil to drain (photo).

2.6 Engine sump drain plug

7 While the oil is draining, unscrew and discard the oil filter. To unscrew the filter, a filter or chain wrench will normally be required. If such a tool is not available, drive a long screwdriver through the oil tester casing and use it as a lever to unscrew the filter cartridge.

8 Smear the rubber sealing ring of the new oil filter with oil and screw into position using hand pressure only (photo).

2.8 Screwing on the oil filter (903 cc)

9 Refit the drain plug and refill the engine with the correct quantity and grade of oil.

10 Start the engine. It will take two or three seconds for the oil warning lamp to go out.

This is normal and is due to the time taken for the new filter to fill with oil.

11 Switch off, check for leaks and check the oil level, topping up if necessary.

Fig. 1.5 Sectional view of oil filter. Bypass valve arrowed (Sec 2)