Technology has continually improved the way that auto manufacturers seal their engines. Yesterday, gaskets constructed of cork or paper, and packed-rope rear main seals were commonplace. Today, Teflon ...

To answer Mike’s questions, let us first return to the basics. A rear main seal, or crankshaft seal as it is commonly referred to, is a big, round rubber seal between the engine and transmission. The ...

This is the sixth installment of our Restoration Mistakes series, dealing with common mistakes made when building or restoring a classic Mustang and how to avoid them. As we said at the beginning of ...

The rear main seal keeps oil sealed inside the rear of the engine, where the crankshaft connects with the transmission. It can be expensive to repair, often $600 or more, because it typically involves ...

Seal SolutionsQ.I'm rebuilding a 322-inch Buick V-8 for my '40 Ford and I'm concerned about the rope-style rear main seal. Some friends claim they leak no matter what you do; others say soaking them ...