I put a diaper on my slow 10.70's car just for the reason. Always hope that I don't need it, or that it does it job when sh!t hits the fan. Did have a guy at our track last yr engine let go about 60ft out and he got in his oil and rolled it a few times. He didn't have a diaper, but did have a belly pan as it was a chassis car. It chucked a rod out the side. Not sure if the pan couldn't hold all the oil or if it just was one of those perfect storms where everything align perfectly to make a mess.