Some are real and some are fake. Maintenance shops with a better reputation will be safer, but there is no guarantee. After all, many owners cannot tell whether the oil they buy is fake. It is more reliable to buy an unadded brand of engine oil and bring it over. The GT Magic Red engine oil I use is only available online at official stores. The purchasing channels are quite strict. There is also a security code to verify the authenticity. I have used it. It’s been two years. The power is much stronger than the fully synthetic ones from the three major brands before. It only starts to fade after 10,000 kilometers. The fully synthetic engine oil I used before stopped working after more than 6,000 kilometers.