It would depend on if you are doing a "complete" oil change or if you just need to add some oil if it leaks. If doing a complete change, then you would put in 4.5 to 5 quarts. Otherwise, for leakage, you would add what it needs. My Volvo 240 (1986) has a very small and slow leak, so in my experience, anywhere from 1/4 quart to 1/2 quart is normal. Good luck!
The oil pan is bolted to the bottom of the engine
Not 100% sure about the '87, but there is no PCV valve on the 1986 Volvo 240 2.3L. Flame trap and Oil trap, but no PCV.
Open the OIL FILLER cap--on the top of the engine- and add oil.
Open the OIL FILLER cap--on the top of the engine- and add oil.
1" Wrench or socket on the bottom of the pan.
NO.
The 1987 Volvo 240 typically requires about 4.5 to 5.0 liters (approximately 4.8 to 5.3 quarts) of engine oil when using an oil filter. It's always best to check the owner's manual or consult with a mechanic for the exact specifications and to ensure proper maintenance.
5W-30 in warmer climates, 10W-30 in colder
Piston rings and/or (probably and) cylinder walls are damaged. Rebuild the engine.
Use only the weight recommended by Volvo and I doubt that they recommend 10w40.
The recommended oil grade is 10W/30.
Any good make of 10w-40 oil