Tip on blow-out spark plugs: Don't overtighten either

[George_San_Jose1]

The big advantage of using a little lube on the threads – as I see it – occurs when removing the plugs 2-3 years later. If the threads on the plug stick to the aluminum threads in the cylinder head after the’ve been in there in that harsh environment for several years, sometime you damage the threads in the cylinder head simply by unscrewing the spark plug. And if that happens, you can end up with a big and time consuming and possibly expensive job ahead of you. I learned this the hard way. I’ve been using a little lube during the plug install on my cars for years, and I’ve never had that problem occur since doing so.