08-05-2018, 08:32 AM
Newcomers to an Austin Seven can be alarmed at the lack of pressure shown on the oil gauge! As a general rule-of-thumb, once the engine is fully warmed through - and that can easily be five to ten miles running - approximately 1psi per ten mph is about right (on a 2-bearing engine, perhaps slightly less, on a three-bearing engine maybe a bit more).