Oil tankers typically travel at speeds between 12 to 20 knots, which is equivalent to approximately 14 to 23 miles per hour. The speed of an oil tanker can vary depending on factors such as the size of the vessel, weather conditions, and the distance it needs to travel. Despite their large size and weight, oil tankers are designed to be efficient and capable of reaching their destinations in a timely manner. **

"Fast" can be used as an adjective to describe something that moves quickly, while "fast" can be used as an adverb to describe the speed at which something is done. For example, "The cheetah is fast" describes the cheetah's speed, while "She ran fast" describes the speed at which she ran. Both words have different grammatical functions and meanings, so it's important to use them correctly in a sentence. **

An original Vespa with a 50cc engine can typically reach a top speed of around 35-40 miles per hour (56-64 kilometers per hour). However, the actual speed may vary depending on factors such as the rider's weight, road conditions, and maintenance of the scooter. Overall, it is considered a relatively slow and steady mode of transportation, ideal for city commuting and short distances. **

A scooter with a 70cc engine can typically reach speeds of around 30-40 miles per hour. However, the actual top speed can vary depending on factors such as the weight of the rider, the design of the scooter, and the road conditions. It's important to always follow local speed limits and safety regulations when operating a scooter. **

The speed of a car with a 350 horsepower engine would depend on various factors such as the weight of the car, aerodynamics, transmission, and tires. However, generally speaking, a car with a 350 horsepower engine could reach speeds of around 150-180 miles per hour or even higher, depending on the specific make and model of the car. It's important to note that speed is not just determined by horsepower alone, but also by other factors such as torque, gearing, and overall vehicle design. **

"Too fast" can vary depending on the context. In terms of driving, "too fast" would generally refer to exceeding the speed limit or driving at a speed that is unsafe for the road conditions. In other contexts, "too fast" could refer to rushing through a task or decision without proper consideration. Ultimately, "too fast" is when speed becomes a danger to oneself or others, whether it's on the road or in decision-making. **

The check engine light may come on after adding oil due to a variety of reasons. One common reason is that adding oil may have caused an issue with the oxygen sensor or the catalytic converter, which can trigger the check engine light. Additionally, if oil was spilled onto the engine or other components during the oil change, it could lead to electrical issues that trigger the light. It is important to have the vehicle checked by a mechanic to diagnose the specific cause of the check engine light coming on after adding oil. **

A moped with an engine displacement of 50ccm can typically reach speeds of around 30-35 miles per hour (48-56 kilometers per hour). However, the actual top speed can vary depending on factors such as the weight of the rider, road conditions, and the specific make and model of the moped. It's important to always follow local traffic laws and regulations when operating a moped. **