Fuel Economy MPG/KPG/KPL

[Tev62]

There are no limitations for hardware manufactured under the metric system anymore than the imperial system.

Tis true, tis true. My '52 MG TD engine has all metric threaded bolts because they purchased the engine design from France. To satisfy the factory, and presumably the wider spannering public, the bolt heads were made Whitworth. That has caught a few people out.