National Synthetics

SEVERE GEAR®

75W-140

Excels in hot and cold temperature extremes

Highlights:

Advanced protection against wear

Controls thermal runaway

Protects against rust and corrosion

Helps reduce operating temperatures

Longoil, seal & equipment life

Contains friction modifiers for limited-slip applications

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Reviews:

Severe Gear

"This product, as well as ALL AMSOIL products I have used for last 30+ years, is excellent for Performance and Reliability"

Tom - Verified Buyer

Dodge Challenger Rear Diff

"Purchased Amsoil Severe Gear Oil for my Dodge Challenger Redeye who’s rear diff was starting to whine when turning. After changing the oil the whine went away. Thanks Amsoil!"

Axel - Verified Buyer

Best gear oil!

"I have switched both of our 4 wheel drive trucks and Corvette over to Amsoil Severe Gear. I am a loyal customer and believe in the science that goes in to the entire product line."

Fred - Verified Buyer