関連ワード:  is it bad to leave a diesel idling    is it ok to leave a diesel idling    is it bad to leave a diesel truck idling    is it bad to leave a diesel truck idling for a long time    is it ok to leave diesel engine running    why is it bad to let a diesel idle    should you let diesel engines idle    is it bad to let a diesel idle for hours  
結果 : is it bad to leave a diesel idling