Severe Gear 75W-110

If you have a lot of wear in your rear end (or miles) and have been suggested to go to a 140 weight, try this one first. You get the better protection and prevention of wear and heat stress yet you save on increased drag. Why burn up fuel when you don’t have to. This is one of AMSOIL’s most advanced products and a constant mover on the shelves here in Omaha.

For the severe operating conditions of today’s hard working vehicles

Severe Gear® 75W-110 AMSOIL Severe Gear® Synthetic Extreme Pressure (EP) Gear Lube is a premium-grade gear oil specifically engineered for maximum performance in severe-duty applications. This state-of-the-art AMSOIL formulation features an exclusive blend of high-viscosity, shear-stable synthetic base oils and an extra treatment of high-performance additives. AMSOIL Severe Gear Synthetic EP Gear Lube maintains its viscosity for long-lasting protection against metal-to-metal contact. The proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring. AMSOIL Severe Gear helps prevent “thermal runaway” — a phenomenon caused by a lubricant’s inability to control friction and increased heat under high-stress conditions. By controlling thermal runaway, AMSOIL Severe Gear Synthetic EP Gear Lube inhibits rapid lubricant degradation and component damage. Equipment runs better and lasts longer with AMSOIL Severe Gear Synthetic EP Gear Lube.

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Printable Product Data Sheet

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75W-110 Gear Lube Performance

AMSOIL Severe Gear provides performance beyond that possible with conventional gear oil. This AMSOIL custom product offers superior gear and bearing protection, better friction and heat reduction, increased efficiency and extended service life.

Designed for Temperature Extremes

AMSOIL Severe Gear EP Gear Lube excels in hot and cold temperature extremes. By design, it resists breakdown from high heat, preventing acids and carbon/varnish formation. Its wax-free construction also improves cold-flow properties, improving fuel economy and cold-weather shifting.

75W-110 Gear Lube

Differential Applications

AMSOIL Severe Gear Synthetic EP Gear Lube is excellent for severe applications, such as towing, hauling, steep-hill driving, commercial use, plowing, racing, off-road use, rapid acceleration, frequent stop-and-go operation and high ambient temperatures. Higher horsepower, towing and hauling capabilities of modern vehicles make turbo-diesel pick-ups, SUVs, vans and delivery/utility vehicles especially prone to severe service. Other severe-duty vehicles include light, medium and heavy-duty trucks, buses, heavy equipment, 4X4s, tow trucks, race cars, tractors and motor homes.

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Performance Features

  • Superior Film Strength
  • Controls Thermal Runaway
  • Rust and Corrosion Protection
  • Helps Reduce Operating Temperatures
  • Maximum Efficiency
  • Long Oil, Seal & Equipment Life

For product service life in differentials, consult your owner’s manual or the Original Equipment Manufacturer (OEM) to establish the application, NORMAL or SEVERE.

Normal Service
Severe Service
Cars, SUVs, Light Trucks Drain at 100,000 miles of service or according to the owner’s manual, whichever is longer Drain at 50,000 miles of service or according to the owner’s manual, whichever is longer
Heavy Duty Class 8 Line Haul Follow the OEM drain interval (miles or hours) for synthetic oil up to 250,000 miles or three years, whichever comes first.
Vocational/Delivery Follow the OEM drain interval (miles or hours) for synthetic oil up to 120,000 miles or three years, whichever comes first.
Heavy Duty Off-Road Follow the OEM drain interval (miles or hours) for synthetic oil up to 100,000 miles or two years, whichever comes first.

For product service life in non-differential applications, consult owner’s manual or the OEM for either normal or severe synthetic oil service intervals. Where service intervals are unavailable, drain at twice the interval for conventional oil.

Gear oils should be changed more frequently when operating vehicles or equipment in dusty or dirty conditions, unless the gear system is properly sealed and equipped with membrane-type breathers.

Note: AMSOIL does not support extended drain intervals where water contamination occurs. Check and service the gear oil frequently when water contamination is possible.

Recommended for use in differentials, manual transmissions and other gear applications requiring any of the following specifications: API GL-5, MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037), Mack GO-J, or the differential (hypoid) gear oil specifications from all domestic and foreign manufacturers such as GM, Ford and Daimler Chrysler. Can also be used in axles where an API GL-4 lubricant is recommended.

AMSOIL Severe Gear (75W-110) provides superior performance and replaces competitors’ 75W-110, 75W-90 and 80W-90 gear oils. It delivers better viscosity protection than Severe Gear 75W-90.

AMSOIL Severe Gear is compatible with conventional and synthetic gear oils. Mixing AMSOIL gear oil with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives, other than those specified by AMSOIL, are not recommended for use with AMSOIL gear oil.

AMSOIL Severe Gear is compatible with most limited-slip differentials. If limited-slip differential chatter occurs, add AMSOIL Slip Lock® friction modifier additive.

Buy in the Omaha store at 84th & G or use this Online link to the Amsoil sale page if you are outside of the area.

For warranty information, visit AMSOIL Warranty Information.


Customer Comments:

Replace that “Universal” oil out of your H-D trans NOW!
By Mark 12/28/2016

from undisclosed

I use AMSOIL Severe Gear 75W-110 in the 6-speed transmission of my 2009 H-D Road King. The SYN-3 oil installed at the factory made the transmission noisy and hard to find neutral when it was warmed up. Since I starting using AMSOIL Severe Gear 75W-110 over 24,500+ miles ago, my transmission has stayed much quieter, shifts without “clunking” and finding neutral is still a breeze.

Editor Note: Our 20W-50 motor oil will work just as good – our 50WT is at the top end of the scale and it matched a SAE 110 Gear scale. The SYN-3 is definitely lacking and doesn’t hold its viscosity long but our AMSOIL MCV will work just as well as this 75W-110 just as our new Motorcycle Transmission Fluid.  All in stock at the Omaha AMSOIL shop on 84th.


Takes a LICKIN and Keeps on TICKEN!!!!
By Mac 12/19/2016

from undisclosed

I own a 2002 4 wheel Drive Chevy Tahoe. I’m a Tournament Fisherman, and I use my Tahoe to tow Thousands of Miles every year. I have Always used AMSOIL Series 3,000 5W/30 in the engine, and also use AMSIOL Severe Gear 75/90 in Both Front and Rear Differentials Without ever having any driveline Problems with my 14 year old Chevy.