Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon

Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon

Q: Is it GL4 or GL5 spec oil?

Gl5See https://www.lucasoil.com/images/medialibrary/TDS10047_Syn-75W-90-GearOil.pdf

Q: Is this g4 or g5 gear oil i need g4 for older transmission?

The year really does not matter except to look up what type of oil is needed, if it calls for ATF, then gear oil will not work, if it calls for 90W gear oil, then the 75-90W will work, some times in hot or extreme you will need 140W, look in your glove box manual for type needed or look online, I run this lucas in my motorcycle final drive and transmission, hope this helps...or call Orileys and ask

Q: will this work in a 2010 silverado with limited slip or do ya need the limited slip additive?

My old Dana 60 limited slip needed the additive when using this Lucas synthetic gear oil regardless I what It says on the bottle I'm sure it's fine in a mechanical locking differential but my experience using in my old limited slip required some Kendall additive

Q: Can I use Lucas 70-140 synthetic gear oil in 2006 f350 rear differential with no limited slip Additive?

70 -140 is for heavy duty applications. I use it on my 2500 ram Cummins with a Dana 80 rear dif and a Dana 70 open front diff. Factory provided limited slip rear differentials suck. I quit depending on my limited slip Diff within the first year I had my 99 Diesel Ram therefore, I quit depending on additives. If your limited slip is still works, use the additive recommended by the dealer. I might not help, but it will not hurt. Better yet, swap it out for a Detroit Locker, or something milder if the Detroit Locker is too much for you. If you use your F 350 mostly for towing, you may want to go for a Tru-Trac or something else with gears, no clutches. There are also electric and air activated locking differentials that work great in towing applications since they allow you to decide when to, or when not to lock your rear end. But they all will cost you a left arm and a right testicle. Hope this helps. Good luck!

Product ID: 6632724

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Details

Material
Blend
Brand
LUCAS
Package Information
Bottle
Liquid Volume
3.8 Liters
Item Weight
7.35 Pounds

🔥High-temp resilience

⚙️Extreme pressure protection

🛢️1 Gallon heavy-duty volume

Frequently Bought Together

Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon

Lucas Oil 10047 SAE 75W-90 Synthetic Gear Oil/Transmission and Differential Lube - 1 Quart

Lucas Oil 10122 Synthetic SAE 75W-140 Gear Oil - 1 Gallon

Description

⚙️ Gear up with Lucas Oil – where performance meets endurance!

TRUSTED BRAND RELIABILITY - Lucas Oil quality ensures your vehicle stays ahead of the pack
OPTIMIZED VISCOSITY 75 W 90 - Perfect balance for smooth shifting and gear protection in all conditions
EXTREME PRESSURE CUSHIONING - Special additives prevent gear wear when the going gets tough ⚙️
UNMATCHED THERMAL STABILITY - Keeps your gears slick even under scorching heat 🔥
LONG LASTING SYNTHETIC BLEND - Engineered for durability and peak performance over time 🛢️

Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil is a premium heavy-duty lubricant designed to protect vehicle gears under extreme pressure and high temperatures. Its advanced additive package cushions gears, prevents lubricant squeeze-out, and maintains optimal viscosity for smooth, reliable performance. Packaged in a convenient 1-gallon bottle, it’s the go-to choice for professionals demanding durability and efficiency.

Specifications

Material	Blend
Brand	LUCAS
Package Information	Bottle
Liquid Volume	3.8 Liters
Item Weight	7.35 Pounds
Recommended Uses For Product	Vehicle
Viscosity	75W90
Item Form	Oil
Global Trade Identification Number	00049807100483
Manufacturer	Lucas Oil
Unit Count	128.0 Fluid Ounces
UPC	049807100483
Number of Items	1
Model	Lucas Oil 10048 Synthetic SAE 75W-90 Gear Oil - 1 Gallon
Item Weight	7.35 pounds
Product Dimensions	4 x 6 x 6 inches
Item model number	LUC10048
Is Discontinued By Manufacturer	No
Manufacturer Part Number	LUCA10048
OEM Part Number	10048

Have a Question? See What Others Asked

Is it GL4 or GL5 spec oil?

Is this g4 or g5 gear oil i need g4 for older transmission?

will this work in a 2010 silverado with limited slip or do ya need the limited slip additive?

Can I use Lucas 70-140 synthetic gear oil in 2006 f350 rear differential with no limited slip Additive?

Reviews

D**L

Highly recommend!

Excellent gear oil! Provides smooth shifting, reduces noise, and enhances performance in both differentials and manual transmissions. The synthetic formula offers superior thermal stability and wear protection. Works great in extreme temperatures. No leaks or issues after prolonged use. A reliable choice for high-mileage vehicles and heavy-duty applications. Highly recommend!

6.05.2025

G**N

Smooth and Reliable

The shifting is smoother, and I’ve noticed less noise from the differential. It’s easy to use, and I trust the brand for quality.

8.11.2024

J**J

Good price

12.05.2025

M**

Great Product

Great gear oil. Helps prolong the life of your race transmissions & rear ends.

3.10.2024

A**R

Excellent gear oil

Probably the best gear oil on the market. I have used it for years in Toyota trucks and SUVs. It says it quiets and smooths gears and rattles on the bottle. And it does! Immediate and noticable improvement in 5-speed manual Toyota operations. Also use in rear differential of Tundra, 4Runner, Sienna AWD, and Tacoma. This is the only 75w-90 gear oil I consider or buy.

16.09.2023

B**N

Great gear lube

The manual transmission I pot this in is quieter, and shifts smoother...

20.05.2025

F**E

vital part of maintence

quality product ,combined with proper maintence helps me achieve better fuel milage and longer lasting parts.

7.09.2024

W**L

Lucas oil

Great gear oil

5.05.2025

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