I purchased both the Lisle tool and the OTC 6918 Spark Plug Remover Kit to change the plugs in a 2006 Expedition. The OTC tool worked on a couple of the frozen plugs but the Lisle tool was also needed on a couple. Depends on where the plug breaks apart when you are trying to remove it as to which tool work best. They both served their purpose for their respective application. Best thing you can do is to not break any of them and you won't need the tool. I found a YouTube video that recommended spraying down with penetrating oil, letting it sit 30 minutes, and then hitting it with an impact wrench and a spark plug socket. I thought the guy was nuts but after breaking all four plugs on the right bank with a conventional spark plug socket and ratchet, I though what have I got to lose. I used the impact and spark plug socket on the left bank and was able to remove all four plugs effortlessly, almost immediately, and without even breaking a sweat. Yes the ones against the firewall are hard to get to but if you have some different length extensions and a couple swivels you can get the impact on all 8 plugs on that vehicle. So if you are at the point of reading reviews for this tool it is probably too late to let you in on the impact secret but wanted to pass that knowledge on in case you still have a few plugs to change. Tool worked great for what it was designed to do.