I'm sorry, but I am not able to provide an answer to the question "Is it allowed, 1554?" as it is unclear what is being referred to by "it" and what the significance of the year 1554 is in this context. If you can provide more information or clarify the question, I would be happy to try to help. **

For the 6N1 Polo with a 60 PS petrol engine, a suitable oil would be a high-quality synthetic 5W-30 or 5W-40 oil. These oils provide the necessary lubrication and protection for the engine, especially in colder temperatures. It is important to check the owner's manual for the specific oil viscosity recommended by the manufacturer to ensure optimal performance and engine longevity. Regular oil changes with the recommended oil will help maintain the engine's efficiency and performance. **

For the 6N1 Polo with a 60 PS gasoline engine, it is recommended to use a high-quality synthetic 5W-40 or 10W-40 motor oil. These oils provide the necessary viscosity and protection for the engine, especially in colder temperatures. It is important to refer to the owner's manual or consult with a professional mechanic to ensure the correct oil specification for the specific engine model. **

It is not recommended to mix different viscosity oils in an engine. It is best to stick with the manufacturer's recommended oil viscosity, which in this case is 5W-40. Using a different viscosity oil can affect the engine's performance and potentially cause damage. If you need to top up the oil, it is best to use the same viscosity oil that is already in the engine. **

The oil change for a Ford Fiesta gasoline engine with 60 horsepower should be done approximately every 5,000 to 7,500 miles, or every 6 months, whichever comes first. It's important to follow the manufacturer's recommendations for oil change intervals to ensure the engine's longevity and optimal performance. Regular oil changes help to maintain the engine's lubrication, prevent wear and tear, and improve fuel efficiency. **

The AVRISP V20 programmer is connected to a computer via a USB cable. The USB cable is used to provide power to the programmer and to establish a data connection between the programmer and the computer. Once connected, the programmer can be used to program and debug AVR microcontrollers using the appropriate software and hardware connections. **

In the year 1554, the world was a very different place compared to today. It was a time of great political and religious upheaval, with the Protestant Reformation continuing to spread across Europe and the Catholic Church responding with its own reforms. In England, Queen Mary I was on the throne, and she was known for her efforts to restore Catholicism as the state religion. The Spanish Empire was also at its height, with King Philip II ruling over a vast global empire. It was a time of exploration and colonization, with European powers vying for control of new territories in the Americas and Asia. Overall, 1554 was a period of significant change and conflict in both Europe and the wider world. **

For a 125cc 4-stroke engine, it is recommended to use a high-quality, fully synthetic engine oil with a viscosity rating of 10W-40. This type of oil provides better lubrication and protection for the engine components, especially under high temperatures and heavy loads. It is important to check the owner's manual of the specific motorcycle to ensure the correct type and viscosity of engine oil is being used for optimal performance and longevity of the engine. **