After removing cap to change oil the oil dont run out

Remove filler cap,
lift car
then from under the car remove oil pan drain plug.
Allow oil to drain into an oil waste pan.
Change oil filter also ..located under skid plate..use filter wrench to remove filter. Be careful as filter is full of oil ..drain in waste pan
wipe filter mounting plate clean..put a thin coating of oil on new filter gasket before spinning it on to the mounting plate..hand tighten and then tighten about 3/4 more turn.. reinstall drain plug. do not over tighten or you can strip the threads. Install correct viscosity and amount of oil start engine. let run to get pressure up. shut off engine, check level with dipstick and close cap....you are done.

First make sure you have the right tool to remove it and try again and make sure you turn counterclockwise (yeah.. it happens), then if it is a plastic oil filter cap you can try to heat it with a hair dryer , it should do the job. Plastic cap are not supposed to get stuck ; or it was dirty when put back, or the O ring broke and the cap got stuck, if you can't take it off at all have a quick run to the garage they'll remove it for you.

Pull the drain plug, change the oil filter, replace the drain plug. Add oil until the dipstick reads full. Start the engine and make sure the oil light goes out. Check for leaks around the oil filter with the car running. Recheck the oil level, add as necessary. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

well let me see you have 4.6L engine you need 7.5 quarts of oil with new oil filter.to do the oil change you need large drain pan and oil filter wrench and a metric wrench to remove oil drain plug you need a funnel also.you need first start engine let it run for 5 minutes to warm up thin out the oil so it will flow better.once engine warm up.turn off the engine.open you hood.now safely raise support vechicle on jack stands make sure vechicle parked on solid level ground.place large drain pan under oil pan remove oil drain plug you need a 15m wrench remove drain plug let all old oil drain out until you see slow drip then reinstall oil drain plug dont over tighten drain bolt.then place drain pan under the oil filter then remove oil filter using oil filter wrench or large channel lock pliers.once you remove oil filter wipe oil filter seal surface with clean paper towel.take new oil filter add oil to new filter then install new oil filter hand tight take filter wrench turn oil filter one half more turn dont over tighten will damage oil filter seal.make sure oil pan drain plug is in place. then lower vechicle. remove oil filler cap on the valve cover add new oil to the engine using a funnel to keep from spilling oil all over the valve cover and exhaust manifold.add all 7.5 quarts to oil crank case wait until oil settle down in crank case check oil dip stick oil level should be at the full mark on oil dip stick.dont over fill crank case.once you finished oil level correct crank engine check for oil leaks at oil filter and oil drain plug. if engine running okay you see no oil warning lights you ready wheel and deal.

clean the area , than run the engine to see exactly where is the leek, i dont think anything is missing
if its leeking from the sensor, change it

warm engine up then raise/jack up front of vehicle there is a 17mm nut/oil plug on the bottom of the aluminum oil pan that you will need to remove and drain into oil pan that can hold at least 7qt of oil. then from the top there is a round aluminum cover with a 13mm bolt near the front of the engine that will need to removed and the oil filter is inside that will need to be replaced dont forget to replace the seals on the cap and screw that come with the oil filter. then after oil is finished draining re-install drain plug with new seal lower car back on grond and then install new oil filter and seals then add oil 6qt. to start then start engine and run for 30 sec. wait 10sec. then check oil level and add as needed

they sell a special socket for the cap-if you dont want to buy the oversized socket a large crescent wrench-but be extremely careful not to crack it-they are dealer only items and could cost up to $45

BEST TO LET DEALERSHIP CHANGE ENGINE OIL.YOU NEED A DEALERSHIP OIL FILTER.YOUR OIL FILTER INSIDE A HOUSING ON FRONT SIDE OF THE ENGINE. CHANGING YOUR OWN OIL NOT HARD.YOU NEED 9 QUARTS OF OIL LOOK INSIDE GLOVECOMPARTMENT FOR OWNERS MANUAL TO SEE WHAT TYPE OF ENGINE OIL YOU NEED TO USE AND HOW MANY QUARTS.IF YOU DONT CHECK READ MANUAL TO SEE WHAT OIL TYPE AND QUARTS YOU NEED. IF YOU BLOW OR DAMAGE THE ENGINE WARRANTY WILL NOT COVER THE ENGINE.FIRST OF ALL TO CHANGE ENGINE OIL YOU CRANK VECHICLE UP LET IDLE FEW MINUTES TO THIN OUT OIL THEN YOU TURN OFF ENGINE. YOU NEED TO RAISE VECHICLE USING THE FACTORY JACK.USE JACK STANDS. LOOK IN OWNERS FOR CAR JACK LIFTING LOCATIONS TO KEEP FROM DAMAGING ROCKER PANELS. AND PLACE A DRAIN PAN UNDER THE OIL PAN. UNDER THE VECHICLE.YOU NEED A WRENCH TO REMOVE OIL PAN DRAIN PLUG.WHEN ALL THE OLD OIL DRAIN OUT IN THE DRAIN PAN.SCREW BACK IN THE DRAIN PLUG TIGHTEN IT DONT OVER TIGHTEN STRIP THREADS.THEN YOU NEED SOCKET TYPE OIL WRENCH YOU USE WITH A 3/8 RATCHET WRENCH REMOVE OIL FILTER HOUSING.PLACE RAGS AROUND THE OIL FILTER HOUSING TO CATCH OIL SPILL. YOU WILL NEED TO GO TO THE DEALERSHIP FOR THE OIL FILTER AND FILTER HOUSING O RINGS. ONCE YOU GET NEW OIL FILTER AND O - RINGS INSTALL THEM IN THE OIL FILTER HOUSING.LOCATED OIL FILLER CAP ON VALVE COVER UNDER THE HOOD.REMOVE OIL FILLER CAP.POUR OIL IN ENGINE USING A FUNNEL.ENGINE HOLDS ABOUT 8.5 TO 9.0 QUARTS OIL. BUT LOOK IN THE OWNERS MANUAL CHECK HOW MANY QUARTS ENGINE NEED.CHECK OIL DIP STICK OIL LEVEL SHOULD BE ON THE FULL MARK ON THE ENGINE OIL DIP STICK.TO BE ON THE SAFE SIDE BUY 10 QUARTS OF OIL FOR A EXTRA.DONT OVER FILL MAKE SURE YOUR OIL LEVEL CORRECT.OIL DRAIN PLUG AND OIL FILTER TIGHT BEFORE CRANKING THE ENGINE.LOOK IN THE OWNERS MANUAL FOR OIL DIP STICK AND LOCATION.

http://www.volvoforumsrepairs.org.uk/800Repairs/inmanpcv.htm look at all your hoses i changed all mine for 4mm silicon hose and found some split /blocked that fixed the back pressure problem dont drill your cap that aint going to fix it it just lets oil run every where .

Replace the oil filter after draining the old oil, and" BEFORE "adding new fresh oil, otherwise you'll be dump all that fresh oil, on the ground,while you "TRY to get the new filter installed.

Step 1 Remove drain plug,Drain oil into drain pan
Step 2 Remove oil filter
Step 3 Reinstall drain plug,qnce oil has drained.
Step 4 Fill new filter with oil,lube seal on filter.
Step 5 Install new filter, Add fresh oil to proper level.replace filler cap
Step 6 Run engine check for leaks.
Happy motoring!