I don't recall at the moment but I would say seconds. Less than a minute. No I did not check the oil level. Also to be clear, I didnt do what you are about to do. I used this tool https://www.rinda.com/techmatepro/
But I did it twice (just to be sure - not smart) and I experienced a hydrolock. It was not good and it took some time to clear it out of the system. I was fortunate that I didnt bend a rod. It was a severe sound and response from the engine. After this event, i experience poor starting in the mornings. Dont take the chance. Just bite the bullet and get the tool as it can be used over and over again and you will need it in the future for other repairs. I have probably used the Techmate at least a 1/2 dozen times for other issues and needs The mechanic nearby is always 2 months out and I have no choice but to DIY if I want to fish.