Oscilloscope training

Technicians know they need an oscilloscope, accurate diagnosis is often only possible with one.
But is having a scope in the garage enough?
Many technicians who have purchased a automotive scope have not had suitable training in the use of the equipment. This makes using the oscilloscope more difficult when those problem jobs present themselves.
A good example is compression testing, on a modern diesel engine the thought of performing a compression test is at best risky, at worse a nightmare. Removing injectors or glow plugs to access the cylinders can result in hours of frustration or damaged components.
Imagine if this test could be performed in seconds without any parts being removed.
It can using an oscilloscope, some even have programs built into the software to allow quick easy relative compression tests to be carried out.