Gravitational waves are invisible. However, they are incredibly fast. They travel at the speed of light (186,000 miles per second). Gravitational waves squeeze and stretch anything in their path as they pass by.
bad bad bad. running your car low on oil can cause the engine to lock up and that means a rebuild. you should check your oil weekly along with other fluids. check your oil after your car has set for about 30 minutes or before you start it for the day. not doing this will give you unaccurate readings.
The greater the imbalance and the greater the speed, the greater the loss of traction and a corresponding loss of fuel economy. The loss of fuel economy due to out-of-balance wheels applies only to the driving wheels. Improperly balanced non-driving wheels affects only ride and tire life.