 On the other hand, I have spark plugs in a Model T that were put in in 1975 that are still perfect. There's no reason to change them. I'm not going to. The electrode's not burnt. They're not fouled. There's no reason to change them. In fact, I bought some new plugs put in there when I went through and just looked at the engine and painted everything. And the new plugs didn't really work as well. They just didn't seem right. So I put the old plugs back in and they're still in there. So I got the spare set, but I'm keeping the old ones because they work fine. But