CP 09/08, Built 09/08, Holden, Commodore, VE MY09 Omega, Sedan standard auto. I replaced the oil filter and tightened it up. Drained the oil into a pan, replaced the plug and then pulled out the oil refill cap and started refilling. Went to do a progress refill check and nothing on the dip stick. checked it again several times during refill and still no show. continued to put what I thought was about the right amount in and in put the refill cap over the hole, not reinstalled and left it. 1 hour later no change, 2 hours later about 5-6 mm showing on the dipstick. 3 hours later still no more than 5-6mm so I started it up and shut it down as quick as I could. cleaned the dipstick each time before checking the fill level 20 minutes after startup shutdown nothing on the dipstick checked for oil on the floor under the car but nothing. never had this problem before with any car What do I do now? thanks to all.