Yes, Yamalube is considered one of the best and premium quality engine oil brands in the motorcycle market in Bangladesh. It is the first choice especially for Yamaha bike users and it is specially formulated to keep the performance of Yamaha engines at the highest level.
Why is Yamalube the best? (Detailed information)

Special formula for engines: Yamalube is not just an ordinary lubricant, it is made using technology from Yamaha Motor Company Japan, which reduces engine friction, increases smoothness and ensures long-lasting protection.

Variety and Grade: Yamalube is available in all three grades - Mineral, Semi-Synthetic and Full Synthetic - in Bangladesh.
Yamalube 10W40 Semi-Synthetic: It is widely used in Bangladesh and provides smooth performance up to 1500 km.

Yamalube Super Sport 10W40 Full Synthetic: It is mainly best for premium bikes like R15, MT-15, which gives good performance up to 2500-3000 km.
Service and Performance: According to user reviews, using this engine oil reduces the engine heat of the bike, gear shifting is smooth and mileage is good.

Usability in other bikes: Although it is more known for the Yamaha brand, Yamalube can be used in any 4-stroke bike if the appropriate grade (like 10W40) is found.

Counterfeit prevention: ACI Motors is the official distributor of Yamalube in Bangladesh. So if you buy from a Yamaha 3S center or authorized showroom, you are guaranteed to get the original product.

Warning:
There are many fake Yamalube engine oils available in the market. So be sure to buy oil from an authorized showroom or trusted store.
Rating:
Yamalube will definitely be at the top of the best list for premium performance and smoothness. However, other international brands like Motul, Liqui Moly, Shell Advance are also very popular and quality in the Bangladesh market. You can choose the best one based on your bike type and budget.