Features:

• Greater wear protection. Increases fluid life. Promotes clean, efficient equipment. Extends equipment and oil life. Provides outstanding rust and corrosion protection. Promotes smoother shifting. Reduces temperatures.
• Both Max ATF and Synchromax are fully synthetic
• Max ATF is recommended for automatic transmissions currently operating with Dexron III or Mercon fluids. 
• Synchromax is recommended for manual transmissions that specify an ATF or motor oil.  It is also ideal for transfer cases and 2-cycle motorcycle gear boxes.
• More oxidation stable than other fluids. Greatly resists breakdown from heat and loss of proper lubricity. Fully compatible with other automatic transmission fluids and other types of friction materials

Editor Reviews:

Product Description:
Synchromax is recommended for manual transmissions that specify an automatic transmission fluid or motor oil. It is also ideal for 4x4 transfer cases and / or 2-cycle and 4-cycle motorcycle gear boxes. Synchromax is formulated with Royal Purples synthetic, proprietary Synerlec additive technology, which offers improved shift quality over a wide temperature range and reduced gear noise. Synchromax is fully compatible with all types of friction materials and offers excellent corrosion and oxidation protection without affecting the soft metals commonly found in manual transmission synchronizers. Try Royal Purple today and Feel the Difference!

Rating : - Royal purple is awesome!
I never thought that changing the manual transmission oil in my BMW 330i to synchromax would make any difference. Unbelievable difference in the smoothness of shifting! I will definitely use more of their products in the future!