We unscrew the oil filler cap on the engine 1.4 / 1.6..
... on the engine 1.8.
From the bottom of the car, we clean the oil pan around the drain plug from dirt.
With a spanner wrench or a "17" head, we loosen the tightening of the drain plug.
We substitute a wide container for used oil with a volume of at least 4 liters under the hole..
... and unscrewing the plug manually, drain the oil.
Be careful, the oil is hot.
Drain the oil for at least 10 minutes.
We check the condition of the sealing copper washer of the plug.
If the washer is severely deformed or worn, replace it.
After wiping the cork, wrap it and tighten it. We remove smudges of oil from the engine crankcase.
We substitute the container under the oil filter. We turn away (counterclock-wise) oil filter. If it fails to do it manually..
... loosen the filter with a puller.
In the absence of a puller, we pierce the filter housing with a screwdriver (closer to the bottom, so as not to damage the engine fitting) and unscrew the filter using a screwdriver as a lever.
Remove the oil filter.
We clean the filter seat on the cylinder block from dirt and oil drips.
Apply engine oil to the filter o-ring.
We wrap the oil filter by hand until the sealing ring comes into contact with the cylinder block. Then turn the filter another 3/4 turn to seal the connection.
Pour 3.75 liters of oil into the engine through the oil filler neck.
We wrap the neck cap clockwise.
We start the engine for 1-2 minutes.
We are convinced that in the instrument cluster the indicator of insufficient (emergency) there is no oil pressure in the engine and no leaks from under the plug and filter. Tighten the oil filter and drain plug if necessary.
Stop the engine after a few minutes (so that the oil glass in the oil pan) checking the oil level (see Checking the oil level in the engine crankcase) and bring it up to standard.