Should I flush my engine oil before switching from conventional to synthetic oil or vice versa?

No, it is not necessary to flush your engine when switching between motor oils. Typically, conducting a routine oil change and replacing the conventional oil with a synthetic motor oil will not require any additional maintenance.

Do I need a special oil filter for a synthetic oil?

No, synthetic motor oil does not require you use a special filter. Oil filters are used based on vehicle specifications. Refer to your vehicle Owner’s Manual for guidance on what type of oil filter to use.

Is there a way to tell if my engine oil needs to be changed or is running low?

Yes, if equipped, your vehicle’s oil life monitoring system will inform you when your motor oil needs to be changed. Refer to your vehicle Owner’s Manual for more specific guidelines.

Does my transmission fluid need to be changed as regularly as my oil?

No, typically, transmission fluid lasts much longer than most engine oils. Refer to your vehicle Owner’s Manual to identify how often and when your transmission fluid should be changed. Severe usage and regular usage descriptions are provided.

Is there a difference between power steering fluid and transmission fluid?

Yes, there is a difference. There are many types of transmission fluid. GM Genuine Parts and ACDelco recommend referring to your vehicle Owner’s Manual for fluid recommendations for all vehicle systems.

Acdelco Gm Original Equipment 10 4091 19300457 Rear Axle Lubricant

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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Description

🛠️ Keep your ride factory fresh with ACDelco’s ultimate rear axle defense!

TRUSTED BY THE PROS - Backed by GM and rigorously tested to meet original equipment standards, ensuring your vehicle performs like new.
READY TO USE 32 OZ BOTTLE - Perfectly sized for easy application and maintenance without waste or mess.
JOIN THE ELITE 4 8 STAR CLUB - Highly rated by 125+ users who trust genuine ACDelco parts for unbeatable reliability.
PRECISION ENGINEERED FOR LONGEVITY - ACDelco's rear axle lubricant is formulated with calcium sulfonate for superior corrosion protection and extended drivetrain life.
OPTIMAL VISCOSITY FOR ALL CONDITIONS - 75W-90 SAE grade guarantees smooth operation and protection across a wide temperature range.

ACDelco GM Original Equipment 10-4091 Rear Axle Lubricant is a 32 oz bottle of premium calcium sulfonate-based oil, designed to prevent corrosion and maintain optimal axle performance. With a high flash point of 250°C and SAE 75W-90 viscosity, it meets rigorous GM standards and is trusted by professionals for reliable, long-lasting drivetrain protection.

Specifications

ASIN	B06Y5JNFJ9
Best Sellers Rank	#38,169 in Automotive ( See Top 100 in Automotive ) #30 in Automotive Assembly Lubricants
Brand	ACDelco
Brand Name	ACDelco
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 125 Reviews
Flash Point	250 °C
Global Trade Identification Number	30808709067871
Included Components	ACDelco - Rear Axle Lubri (A) (800522)
Item Form	Oil
Item Type Name	ACDelco Automotive Parts
Liquid Volume	32 fluid ounces
Manufacturer	ACDelco
Material	Calcium Sulfonate
Model Number	10-4091
Number of Items	1
Package Information	Bottle
Part Number	19300457
Recommended Uses For Product	Vehicle
SAE J300 Viscosity Grade	75W-90
Specific Uses For Product	Prevent Corrosion
UPC	808709067870
Unit Count	32 Ounce
Warranty Description	No Warranty

Reviews

F**.

Can't beat factory

Worked as intended.

13.05.2026

R**K

Seems genuine, good price

11.03.2026

F**A

Quality

Good quality

20.10.2025

A**N

As described

4.10.2025

G**Z

Great value

Perfect for my truck! Delivered fast!

29.06.2025

J**S

works so far, no issues.

worked so far in front and rear differential of 2021 Yukon Denali. I ordered 3 quarts for both, 1.14 qt for front and 1.59 for rear including the GM friction modifier for the rear. I didn't have much for limited slip groan noise in the winter, so no problems to solve just changing fluid at 124k miles.

2.08.2026

T**E

OE recommended

OE Ac Delco fluids, how can you go wrong? I recommend and use only AC Delco fluids in my GM vehicles.

5.04.2025

M**K

Great product

11.07.2025

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago