Other reviews are correct they are very difficult to turn. However, I sprayed some lube on them and now they spin fine. They are still a little stiff, but will loosen up over time. I wonder if they would come loose after engine oil leaked through them. I think it's better for them to be too tight than too loose. Also, a funnel I ordered was not properly assembled. I had to take it apart (by screwing it onto the oil bottle and pulling firmly on the hose). I snapped it in correctly and now itโฆ