Lucas Gear Oil Transmission and Differential 75W-90 Synthetic 3.79L 10048Lucas SAE 75W 90 Synthetic Gear Oil is a non foaming, super slick, long lasting lubricant designed especially for heavy duty or high performance applications where other gear lubricants just aren't good enough. Contains a special additive package that cushions gears and resists "squeezing out" under extreme pressure situations where other gear lubricants just aren't good enough. Specially designed to stand up to high temperatures without losing its