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80W-140 Long Life Synthetic Gear LubeHelp

Specifically Engineered for 500,000-Mile Service Life in Over-the-Road Trucks

80W-140 Long Life Synthetic Gear Lube Product Image
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$281.45 Retail Price (USD)
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Product Code: FGO05-EA
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Engineered for extended drain intervals up to 500,000 miles as set by equipment manufacturers for over-the-road trucks and heavy equipment. Provides long life in passenger cars and trucks. Excellent all season summer and winter performance. Outperforms all conventional gear oils.

AMSOIL Long Life Synthetic Gear Lube is an extended-drain gear lube engineered to last several times longer and protect gears better than conventional gear oils. This exclusive AMSOIL formulation of premium synthetic base oils and high-performance additives resists acid, carbon and varnish formation from oxidative breakdown. Components run cleaner and last longer. AMSOIL Long Life Synthetic Gear Lube is shear-stable and reduces friction. It maintains its viscosity during extended service for maximum wear control and is fuel-efficient. The superior cold-temperature fluidity and high-temperature stability properties of AMSOIL Long Life Synthetic Gear Lube make it excellent for all-season use. AMSOIL Long Life Synthetic Gear Lube helps extend equipment life and reduce maintenance costs.

APPLICATIONS
AMSOIL Long Life Synthetic Gear Lube, in the correct viscosity grade, is recommended for domestic and foreign applications, including over-the-road trucks, light-, medium- and heavy-duty trucks, off-road equipment, commercial vehicles, motor homes, autos, SUVs, emergency vehicles, buses, delivery/utility vehicles and tractors.

Use AMSOIL Long Life Synthetic Gear Lube in differentials, manual transmissions or other gear applications where one or more of the following standards are specified: API GL-5 & MT-1, MIL-PRF-2105E, Dana* SHAES* 234 (Formerly Eaton* PS-037) for 250,000 miles, Dana SHAES 256 (Formerly Eaton PS-163) for 500,000 miles, Dana SHAES 429A, Mack* GO-J & GO-J+, Meritor* 0-76N (75W-90) & 0-80 (80W-140) plus hypoid gear oil specifications from ZF TE-ML 07A and 08 foreign and domestic manufacturers such as GM*, Ford* and Daimler* Chrysler*. It can also be used in rear axles where API Service GL-4 lubricant is recommended.

AMSOIL Long Life Synthetic Gear Lube provides:

  • High Load gear and bearing protection
  • Protection from rust and corrosion
  • Better cold-weather shifting
  • Improved efficiency
  • Improved seal 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 TrucksDrain at 100,000 miles of service or according to the owner’s manual, whichever is longerDrain at 50,000 miles of service or according to the owner’s manual, whichever is longer
Heavy Duty Class 8 Line HaulFollow the OEM drain interval (miles or hours) for synthetic oil up to 500,000 miles or three years, whichever comes first.
Vocational/DeliveryFollow the OEM drain interval (miles or hours) for synthetic oil up to 120,000 miles or three years, whichever comes first.
Heavy Duty Off-RoadFollow 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.

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

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.

COMPATIBILITY
AMSOIL Long Life Synthetic Gear Lube is compatible with conventional gear oil. Mixing AMSOIL gear oils with other oil, however, reduces the oil’s benefits and nullifies the extended service life recommendations.

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

AMSOIL Long Life Synthetic Gear Lube 75W-90 replaces competitors' 75W-90 and 80W-90 viscosity grades. AMSOIL Long Life Synthetic Gear Lube 80W-140 replaces competitors' 80W-140 and 85W-140 viscosity grades.

AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty. For complete information visit www.amsoil.com/warranty.aspx.

HEALTH & SAFETY STATEMENT
This product is not expected to cause health concerns when used for the intended applications and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available online at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

FGO Package Sizes
Code Package Size Unit of Measure Product
FGO05 (FGO05-EA) 5-Gallon Pail Each 80W-140 Synthetic Long Life Gear Lube
FGO16 (FGO16-EA) 16-Gallon Keg Each 80W-140 Synthetic Long Life Gear Lube
FGO30 (FGO30-EA) 30-Gallon Drum Each 80W-140 Synthetic Long Life Gear Lube
FGO55 (FGO55-EA) 55-Gallon Drum Each 80W-140 Synthetic Long Life Gear Lube
FGO27 (FGO27-EA) 275-Gallon Tote Each 80W-140 Synthetic Long Life Gear Lube
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REVIEW SNAPSHOT®

by PowerReviews
AMSOIL80W-140 Long Life Synthetic Gear Lube
 
5.0

(based on 11 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 11 customers

Displaying reviews 1-10

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5.0

Good stuff

By 

from East Canton, O H I O

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

I use in my Jeep Wrangler, rear differential!

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Jeep, gmc dialysis, kabota tractor,
 
5.0

good products

By 

from Redmond , Oregon

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

I believe fully that Amsoil synthetics are the class of the field in all applications , I use their engine and mix oils in my quads and jet ski , so I seen their extended life gear oil I had to get it for my pickup , it might sound like an ad , but , Amsoil is all good stuff

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • old but good !
 
5.0

I would buy again

By 

from Waynesboro GA

Verified Buyer

Comments about 80W-140 Long Life Synthetic Gear Lube:

I put this in the rear ends on my Kenworth, so far so good!

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • Personal cars and class 8 truck
 
5.0

Gear lube

By 

from Massachusetts

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

Worked perfectly....

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • F250 super duty
 
5.0

Excellent product

By 

from Massachusetts

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

Excellent product. The only fluids I use on my car and trucks.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • F250 Super Duty

(1 of 1 customers found this review helpful)

 
5.0

Best gear oil

By 

from Albuquerque

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

Setup gears and lockers for off road use. Always recommend or install Amsoil gear lube after my work is done. Feel very confident in a successful job especially when using this lube.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 2015 Dodge Ram truck

(1 of 1 customers found this review helpful)

 
5.0

Better than off-the-shelf shelf

By 

from Lakewood, CO

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

Use it in our work vehicles. After the discount it's cheaper than any auto store

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • Work cars/SUVs

(1 of 1 customers found this review helpful)

 
5.0

Confidence in Amsoil

By 

from Denver

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

It's difficult to give a review of a long term oil such as differential lube. But, Amsoil in my 4.2 and my 4.0 Jeep engines was immediately noticed. Jeep in-line 6 motors tend to have valve noise on start up. Totally gone now ! Love that Amsoil ( 10w30). Now switched all 3 Jeeps to Amsoil

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 4 jeep, 2 hot Rod's 3 moto's

(3 of 3 customers found this review helpful)

 
5.0

Lang lasting fluid, it does as it's discribed

By 

from undisclosed

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

This really do last a long time and no issues with over 50,000 miles since changing my rear differential and transfer case and the fluid is still clean.

(2 of 3 customers found this review helpful)

 
5.0

Lasts longer than conventional gear oil-worth the extra cost

By 

from undisclosed

Verified Buyer

Comments about 75W-90 Long Life Synthetic Gear Lube:

Put this in my 2wd Tacoma open differential, 10,000 miles so far and no issues. I purchased the premium AMSOIL synthetic product for its superior quality and long service life... will last longer and protect my vehicle better than conventional, so in the long run it's definitely worth the added cost.

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