Best Star Fire Premium Lubricants in 2026

Formulated with premium base stocks for added resistance to thermal breakdown

Outstanding wear protection

Excellent resistance to system rust and oil oxidation

Formulated with premium base stocks for added resistance to thermal breakdown

Outstanding wear protection

Excellent resistance to system rust and oil oxidation

Provides excellent protection against wear under extreme pressure and high torque operation

High resistance to thermal breakdown

Helps prevent foaming, rust, and corrosion

Formulated with highly refined group ii base stocks for added resistance to thermal breakdown

Superior wear protection to protect critical components

Excellent frictional properties for smooth-shifting, excellent anti-shudder performance

Formulated with premium base stocks for added resistance to thermal breakdown

Outstanding wear protection

Excellent resistance to system rust and oil oxidation

Excellent wear protection

Smooth clutch and pto performance

Excellent anti-shudder performance

Perfect for engine building

Use to pre lube bearings, cams, lifters and valve train

Prevents seizing galling and scuffing

Greater wear protection

Package Dimensions: 28.575 H x 8.636 L x 8.89 W (centimetres)

Package Weight: 0.839 kilograms

This product dampens transmission noise (reducing the notorious shifting clunk found in these gearboxes), dramatically reduces temperature, provides thicker oil films between gear teeth and resists throw-off

Compatible with all aftermarket versions like Baker, JIMS, S&S, etc.

Compatible with all HD trans including with Milwaukee-Eight engines, Evolution engines, Twin Cam engines and latest 6-speed Cruise Drive

CUTTING EDGE TECHNOLOGY - Shockproof technology designed to make a big impact against big impacts

QUIET SMOOTH SHIFTING - V-Twin Transmission oil dampens transmission noise, reducing the notorious shifting clunk found in these gearboxes

IMPROVES PERFORMANCE - Transmission fluid that dramatically reduces temperature, providing thicker oil films between gear teeth and resists throw-off

Ford XT-10-QLVC 5 Quart Mercon-Lv Automatic Transmission Fluid 1 Pack

-Make sure this fits by entering your model number. -Geniune OEM part

Geniune Ford replacement parts are a part of what keeps a vehicle looking and performing its best over the long term, something that the Ford company has always known. When choosing parts for your Ford vehicle, make the best choice: Use durable and affordable parts made specifically for the manufacturer of your vehicle. These genuine Ford parts are a fit for your vehicle. Ford OEM parts are the way to go if you want to keep your vehicle as close to its original condition as possible.

Royal Purple

Not for use in applications where MERCON V, MERCON SP, Continuously Variable Chain Type Transmission Fluid, Motorcraft Premium Automatic Transmission Fluid, FNR5 Automatic Transmission Fluid or Type F Automatic Transmission Fluid is recommended

Mobil 1 Synthetic Gear Lube Ls 75W-90 Mobil 1 Synthetic Gear Lube Ls 75W-90 Is A Supreme Performance, Synthetic, Multi-Purpose, Sae 75W-90 Automotive Gear Lubricant Designed To Meet The Highest Level Of Performance Requirements Of Modern Passenger Vehicles In All Types Of Operating Conditions, Including Limited Slip Applications, As Well As Delivering Outstanding Power Transfer Performance

Compared To Conventional Hypoid Gear Lubricants, Mobil 1 Synthetic Gear Lube Ls 75W-90 Performs Exceptionally Well Over A Wide Range Of Temperatures

Through Creativity, Productivity And Innovation - This Brand Continues To Develop The Finest Automotive Accessories

Red Line 50304 Manual Transmission (MT) 90W Gear Oil

Item Package Dimension 8.49999999133L x 3.99999999592W x 3.99999999592H inches

Item Package Weight - 1.69976404002 Pounds

Item Package Quantity - 1

Better protection

Improved performance

Quality you can trust

For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Case of 3 // 1 Quart (32 Ounces)

Royal Purple engineered this ultra-tough, high performance automotive hypoid gear oil to provide maximum protection to heavily loaded gears while maximizing power throughout the drive train. Max Gear outperforms ordinary gear oils by combining the highest quality synthetic oils with Royal Purple’s proprietary Synerlec additive technology.

Maximizes horsepower, Extends gear and bearing life, Reduces operating temperature, Severe service performance, Lower coefficient of friction, Superior corrosion protection

High VI paraffinic base stock

Contains LUBIUM (additive)

Anti-foam protection and Anti-squeal additive

LONGER SYNCHRO LIFE - High-performance gear protection, satisfies the gear oil viscosity requirements of 75W, 80W and motor oil viscosities of SAE 30, 10W30, 5W31

OFFERS QUICKER SHIFTS - MLT Gear Oil with balanced friction control for most manual transmission synchronizers. Other synthetic gear oils are often too slippery

SAFE FOR BRASS SYNCHROS - As it lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3 & GL-4 applications

Item Package Dimension: 8.81L x 4.05W x 4.05H inches

Item Package Weight - 1.75 Pounds

Item Package Quantity - 1

Premium-quality ATF for Ford, Lincoln and Mercury transmissions

Specifically designed for improved durability and torque handling capacity in TorqShift transmissions

Provides excellent shifting characteristics at high and low ambient temperatures

Recommended for manual transmissions that specify an automatic transmission fluid

Ideal for 4x4 transfer cases and motorcycle gear boxes

The top synthetic transmission fluid for protection and an all-around smoother ride

100 Percent Synthetic Ester based

100 Percent synthetic extreme pressure lubricant for an efficient anti-wear protection

0 Percent shear loss : Unshearable oil film in extreme conditions

Brand: Royal Purple

LTDType: Synthetic

Viscosity: 75W-90

Item Package Dimension 13.4299999863014L x 10.5899999891982W x 9.2099999906058H inches

Item Package Weight - 23.99070335084 Pounds

Item Package Quantity - 1