Shell Advance Ultra is a fully synthetic 4-stroke motorcycle engine oil designed to provide superior engine protection and performance for all types of modern bikes. It's formulated with Shell's PurePlus Technology, which uses natural gas to create a clear base oil with fewer impurities than traditional oils. This, combined with a motorcycle-specific additive package, helps keep the engine clean, reduces wear, and enhances overall performance.
Here's a more detailed look at Shell Advance Ultra:
Key Features and Benefits:
Fully Synthetic Technology: 

Provides superior protection and oil performance reliability.
R.C.E. Technology: 

According to Shell Bangladesh, this technology is designed to improve oil performance reliability, enhance control, and provide a more enjoyable ride by reducing noise and vibration.
PurePlus Technology: 

Converts natural gas into a clear base oil, minimizing impurities and improving oil quality.
Active Cleansing Technology: 

Helps keep the engine clean by preventing dirt particles from sticking together.
Excellent Shear Stability: 

Helps dampen vibration and reduce noise.
Optimized Friction Control: 

Promotes smoother clutch engagement and gear changes.
Proven Protection: Offers proven protection against valve train wear.
Specific Advantages:
Superior Engine Protection: 

The synthetic base oil and additive package work together to protect the engine from wear and tear.
Improved Performance: Helps optimize power delivery, enhance responsiveness, and reduce engine noise and vibration.
Extended Engine Life: 

The advanced formulation helps prolong the life of the engine.
Cleaner Engine: 

The oil helps remove sludge and deposits, keeping the engine cleaner.

Suitable for Various Bikes: Designed for all types of modern bikes, including those with high-performance engines.
In essence, Shell Advance Ultra is a premium motorcycle oil that leverages advanced technology to deliver exceptional engine protection and performance, contributing to a smoother, more enjoyable riding experience.