Pet Peaves in Mechanic's Lingo

Valve covers do indeed cover the valve stems. Some cars don't have rockers just cams and buckets over the valve stems and springs. They are still valve covers, or cam covers, or cylinder head covers. Even the factories can't agree between different departments. What the service manual may call a cylinder head cover gasket, the parts catalog may call a rocker cover gasket. It's all the same.

But, yeah, calling a limited slip a posi does urk (or is it erk?) me. lol