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.

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ACDelco 10-4091 Rear Axle Lubricant - 32 oz

Product ID: 442531589

Details

Brand
ACDelco
Item weight
32 Ounces
Liquid volume
32 Fluid
Material
Calcium
Package information
Bottle

🔥250°C flash point for high-heat resilience

🛠️SAE 75W-90 viscosity grade for optimal axle protection

🛢️32 fl oz premium lubricant

17559 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛢️ Keep your ride flawless with factory-grade rear axle lubricant!

MADE IN THE USA - Proudly manufactured domestically, guaranteeing quality and reliability.
CORROSION DEFENSE - Calcium Sulfonate base fights rust and corrosion, extending vehicle life.
HIGH HEAT STABILITY - Withstands extreme temperatures up to 250°C, preventing breakdown under pressure.
FACTORY GRADE PERFORMANCE - Trusted ACDelco formula ensures your rear axle runs smoother and lasts longer.
PERFECT VISCOSITY BALANCE - 75W-90 grade delivers ideal flow and protection for all driving conditions.

The ACDelco 10-4091 Rear Axle Lubricant is a 32-ounce bottle of high-performance, calcium sulfonate-based oil designed to protect vehicle rear axles. Featuring a SAE 75W-90 viscosity grade and a high flash point of 250°C, it offers superior heat resistance and corrosion prevention. Manufactured in the USA, this lubricant is trusted by professionals and rated 4.8 stars by users for reliable, factory-level performance.

Specifications

ASIN	B06Y5JNFJ9
Best Sellers Rank	#202,901 in Automotive ( See Top 100 in Automotive ) #48 in Motorcycle Lubricants
Brand	ACDelco
Brand Name	ACDelco
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 119 Reviews
Flash Point	250 Degrees Celsius
Global Trade Identification Number	30808709067871
Included Components	ACDelco - Rear Axle Lubri (A) (800522)
Item Form	Oil
Item Weight	32 Ounces
Item weight	32 Ounces
Liquid Volume	32 Fluid Ounces
Liquid volume	32 Fluid Ounces
Manufacturer	ACDelco
Material	Calcium Sulfonate
Model Number	10-4091
Package information	Bottle
Part Number	19300457
Recommended Uses For Product	Vehicle
Recommended uses for product	Vehicle
SAE J300 Viscosity Grade	75W-90
Specific Uses For Product	Prevent Corrosion
UPC	808709067870
Unit Count	32 Ounce

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

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17559 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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