Get Chevron Delo SynGear HD SAE 75W90

It has been designed to reduce friction & wear, perform under the highest levels of heat & stress, and is recommended for use in differentials, manual transmissions, worm gears, power dividers, supercharges, and all gear boxes that require a gear lubricant.

300°F to 350°F. Excellent protection to the gears and bearings even under the most extreme thermally, stressed operating conditions.

Synthetic gear oils are used whenever mineral gear oils have reached their performance limit and can no longer meet the application requirements. For example: at very low or high temperatures. extremely high loads.

Super Lube® Synthetic Gear Oil is a clean, translucent oil with superior anti-wear and extreme pressure properties, suitable for lubricating: Spur, Helical, Herringbone, Rack and Pinion, Straight and Spiral Bevel, and Worm Gears.

Synthetic lubricants have a lower friction coefficient in a gearbox, better film strength and a better relationship between viscosity and temperature (viscosity index, VI). This indicates synthetic lubricants can be used at lower viscosity grades and lower temperatures.

There is no argument in the lubrication profession over this question; synthetic gear oil is overwhelmingly superior in every category measured. Large trucking companies, like UPS for instance, use nothing but synthetic gear oil for better fuel economy and to extend equipment life.

Property PropertyGradeSAE 75W-90Density @ 15 C, g/cm3, ASTM D40520.86Flash Point, Cleveland Open Cup, °C, ASTM D92210Kinematic Viscosity @ 100 C, %, ASTM D44515.73 more rows

Unfortunately, there is no reliable way of differentiating between mineral and synthetic in the field. However, because synthetic base oils are white (meaning transparent) as compared to mineral oils, which have a darker natural color (due to aromatics, sulfur and other impurities), this may be a distinguishing factor.