Group III Base Oils

Ultra-S series products are very high VI base oils produced under all-hydroprocessing route (hydrocracking, wax hydroisomerization and hydrofinishing). ExxonMobil's advanced MSDW™-2 technology was adopted for the wax hydroisomerization process and severe hydrocracking and hydrofinishing process almost completely removes impurities and saturates aromatics to only a traceable level.

Ultra-S series base oils are also claimable as "synthetic" according to the ruling by the National Advertising Division(NAD) of the Council of Better Business Bureaus and has the following characteristics, which closely match conventional synthetics like PAOs.

• Very high viscosity index
• Excellent response to PPD
• Excellent low temperature performance
• Excellent oxidative and thermal stability
• Very low volatility
• Very high flash points and purity

Supplier	Product Name	TDS
S-Oil	Ultra-S 3
S-Oil	Ultra-S 4
S-Oil	Ultra-S 8

For further information relating to any of the above products, please contact the Lubricants Team