Ok OK - I'm not really cheap but it really tick's me off when folks don't get the last drop of oil out when they throw away the bottles on a change. I made this little setup that works with gallon as well as quarts. I just changed the oil on my wife's Subaru - and it does well on the quarts. (I'm not using Mobile 1 in my ISB). I let them drain sometimes overnight. But usually an hour or two no set time, I just rotate when I get a chance - and boy do I get the last drop - and if you think she doesn't add up - you're dead wrong.