#77Q: With Conditioners. A high quality power steering fluid and conditioner. Mixes with most factory power steering fluids. Helps stop pump squealing, protects seals and helps prevent unusual wear.
#77-12: Mixes with all original-equipment power steering fluids. Plates, lubricates metal parts in system to reduce friction. Reduces moisture and its effects. Contains anti-foaming, anti-corrosion, anti-wear additives for extra protection.