Not trying to start a magnet/ no magnet war, but I ordered some serious magnets from wondermagnet.com, just stuck them on all my drain plugs and oil filter... . these suckers are STRONG!!! I laughed for about a half hour just trying to get them apart, even if they don't work, it was worth the entertainment... also drove for about an hour today, highway, over railroad tracks etc. these things didn't budge... not affiliated with them in any way, just posting info.