castrol® ap gear lubricant™ 80w-90 and 85w-140

Castrol® AP (all purpose) Gear Lubricant™ is a multi-purpose, extreme pressure gear oil that has superior thermal durability and will provide transmission, differential and other application protection beyond that specified for the current SAE J2360 (formerly MIL-PRF-2105E), API GL-5 and API MT-1 (80W-90) requirements. Its thermal durability extends component life and reduces critical component wear. 
Castrol AP Gear Lubricant helps you to: 
  • Promote efficient gear operation by balancing low and high temperature viscosity
  • Prevent metal-to-metal contact by maintaining a sufficient oil film between the parts
  • Prevent rust and reduce friction through its optimized formulation
  • Protect gears from deposit buildup under the stress caused by hauling extra-heavy loads with our thermally durable additive system, which resists oxidation and deposits
  • Lengthen component life with wear protection that far exceeds industry requirements