No. Do not put unleaded gas in a diesel tank.
There both ok
any unleaded gas is ok for racing you can jet and raise compression for racing gasoline for better performance
YES , the Owner Guide shows regular unleaded , 87 octane
yes you can use unleaded petrol in that bike
Try [unleaded] 87 octane. If it does not "ping" excessively you should be OK If it does "ping" try 89 Octane
Not unless it is a carburated engine.
Yes
As long as it does not "ping" excessively
It will be fine.
Petrol is basically a European name for gasoline. Make sure the octane value is ok for your car.
Most small engines are designed to run on regular unleaded gasoline; the higher octane premium gasoline may eventually be harmful to the engine.