"I am led to believe that the worst thing you can do is just to leave the engine idling, that is when it just running on its own power. That is when the most vibration is generated from the two pistons firing and time between is longer. At the higher revs when driving the vibrations are .
Vibration is a matter of frequency. At low RPM's vibration or frequency is less due to the lower firing cycles of the engine. But the pulses feel more severe due to the dead time between cycles allowing more energy to be transmitted before countered by the opposing cylinder firing.
At higher RPM's the frequency is higher but the pulses feel less powerful because there are more firing cycles opposing each other.
Either way, the rubber isolators the engine is mounted to the chassis with should be absorbing the brunt of it.
