• Ashless material
• Good EP and load-carrying properties
• Low reactivity to copper-containing alloys
• High sulfur content
• Excellent booster for FZG, four-ball weld, CRC L-42, and other EP tests

High-load applications, such as gear oils, are prone to gear tooth wear and premature failure without proper lubrication to prevent metal-to-metal contact. Various additives provide extreme-pressure properties, but certain applications cannot handle metallic compounds and metal deposit formation from zinc-based chemistries, particularly in environmentally sensitive situations. Additionally, some sulfur-based additives can be highly reactive with yellow metal alloys, causing corrosion and staining.