What Power Steering Fluid is Compatible with GM 89021184?

GM 89021184 is a Genuine GM power steering fluid (PSF) originally specified for conventional steering systems in various GM vehicles. GM 89021184 is the part number you’ll see listed if you’re flipping through the owner’s manual of a 2005 Chevy Colorado, 2007 Corvette, 2008 Silverado 1500, 2009 Cadillac, or 2009 Enclave.

Here’s another number you’ll come across if you search for a GM 89021184 equivalent: GM 9985010. GM 9985010 is the specification (a standard that General Motors created) while GM 89021184 is a part number.

GM 89021184 a mineral-based formulation, sometimes called GM cold climate PSF. It was originally sold in either 12 oz or 16 oz (one pint) bottles, depending on when you bought it. 

GM 89021184 has been discontinued and has been first replaced by 89021185. Today, both 89021184 and 89021185 have been superseded by GM part number 19329450, also sold as AC-Delco 10-5074. 

This happens all the time in the automotive world. Manufacturers update their internal numbering systems, consolidate suppliers, or make minor formula improvements, and the part number changes even though the product does the same job. 

To avoid all the confusion, here’s the only thing you have to remember:

• Look for GM fluid part no. 19329450 if you want to buy the OEM fluid.
• Look for GM spec 9985010 in the technical data sheet of a power steering fluid if you want to find the OEM equivalent.

To save you all the confusion, we gathered the best equivalent to GM power steering fluid 89021184.

GM Power Steering Fluid 89021184 Equivalent

GM 89021184 is engineered to reduce steering noise while being non-corrosive and non-foaming. Power steering systems operate under high pressure and temperature. You need a fluid that can handle those conditions without breaking down or causing damage.

The current equivalent (AC-Delco 10-5074/GM 19329450) has these physical properties:

• Flash Point: 175° C
• Pour Point: -42° C
• Viscosity: 150

The pour point is particularly important if you live in cold climates. 

Compatible Aftermarket Alternatives

If your vehicle is under warranty, stick with an OEM-approved fluid like ACDelco 19329450. The cost difference isn’t worth the risk. If your power steering system fails while you’re using an aftermarket substitute, the dealer can void your warranty claim or outright deny it. 

Once your warranty expires, the decision becomes more about personal preference and risk tolerance. Because 89021184 represents a performance specification (GM 9985010), you’re not limited to buying the Genuine GM product. Several reputable aftermarket manufacturers produce fluids that meet or exceed this standard:

Valvoline offers multiple options: their standard Power Steering Fluid, MaxLife Power Steering Fluid, and Pyroil Power Steering Fluid all advertise compatibility with GM 89021184 specification.

Prestone offers a PSF compatible with original factory-fill OEM fluids and operates across extreme temperatures (-40°F to 266°F). Prestone AS264 Full-Synthetic is particularly well-suited for the cold-climate performance that 89021184 was known for.

Lubegard produces a synthetic power steering fluid compatible with 89021184.Other brands like Amsoil, Castrol, and Lucas synthetic PSF are commonly used as alternatives, provided they explicitly state compatibility with GM power steering requirements.

	ACDelco 19329450	LUBEGARD 23232	Prestone AS 264
Anti foaming	Yes	Yes	Yes
Wear protection	Yes	Yes	Yes
Temp Range (℉)	N/A	-40 to 266	-41 to 130
Contain Stop Leak	No	No	No
Contain Seal Conditioner	No	No	Yes
Price	Cheapest	Cheap	Expensive

Related: Power steering fluid coming out of reservoir cap: Causes & Solutions

ACDelco 19329450 Power Steering Fluid (OEM)

ACDelco 19329450

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AC Delco 10-5074, sold under GM part number 19329450, is the direct replacement for discontinued GM 89021184 power steering fluid. When you look up 89021184 at any parts supplier today, they’ll automatically redirect you to this product. It’s the same mineral-based formulation GM has specified for conventional power steering systems since the mid-2000s, just with an updated part number.

This is what you need if you’re maintaining a 2005 Chevy Colorado, 2007 Corvette, 2008 Silverado 1500, 2009 Cadillac, or 2009 Enclave with conventional hydraulic steering. The fluid comes in a 16 oz bottle, though the actual fill volume is listed as 14.79 fluid ounces.

AC Delco 19329450 is a light-bodied, amber-colored mineral oil with additives designed for power steering systems. It contains an additive package that focuses on lubrication and corrosion protection. AC Delco specifically states they do not include conditioners or cleaning agents in their power steering products for reliability reasons.

AC Delco 19329450’s primary selling point is noise reduction. GM markets this fluid as reducing power-steering related noise for a quieter passenger compartment. The anti-foaming formula helps prevent cavitation, which is typically what causes that whining or groaning sound from the pump. The anti-corrosive additives protect seals, hoses, and metal components from degradation over time.

There are no widespread complaints about this fluid’s performance. It does what it’s supposed to do without drama. However, it is NOT suitable for electric power steering (EPS) or hydraulic systems that specify different fluids like Dexron automatic transmission fluid. 

Check your owner’s manual before using it. If your GM vehicle originally called for 89021184 or 89021185, this is your fluid. If it specified a different part number or formulation, verify compatibility first.

Lubegard Power Steering Fluid 23232

Lubegard 23232 Power Steering Fluid

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Lubegard Complete Synthetic Power Steering Fluid is marketed as a universal replacement for GM 89021184 and dozens of other OEM power steering fluids across European, North American, and Asian vehicles. 

Unlike the mineral-based AC Delco 19329450, this is a fully synthetic formulation designed to work in conventional hydraulic steering, electric hydraulic steering systems, and even other hydraulic applications like shock absorbers and traction control systems.

Lubegard Complete flows well even in severe cold. Its synthetic base offers better thermal stability than mineral oils, meaning it resists breakdown at high temperatures and maintains viscosity across a wider temperature range.

The additive package includes anti-wear agents, corrosion inhibitors, anti-foam compounds, and oxidation inhibitors. Lubegard also claims the formula cleans and frees sticky turbines and pumps. The company also claims Lubegard Complete Synthetic PSF eliminates power steering noises and whines, eliminates rack and pinion stiffness, and inhibits fluid foaming and oxidation. 

Lubegard’s inclusion of cleaning agents might be a double-edged sword. If your system has accumulated varnish or deposits, those detergents might help. But GM explicitly avoids conditioners and cleaning agents in their fluids because it’s unpredictable how it will interact with seals and components. 

Lubegard Complete comes in multiple sizes: 32 oz bottles (part number 23232), 5-gallon pails, 55-gallon drums, and 330-gallon totes.

Compatibility

Lubegard explicitly lists compatibility with the following GM part numbers:

• GM 89021184
• GM 89021185

Lubegard 23232 Vs. ACDelco 19329450

AC Delco 19329450 is the OEM-approved mineral-based fluid with guaranteed warranty compliance and proven compatibility for GM’s conventional hydraulic steering systems. It’s light-bodied for cold-weather flow, avoids cleaning agents for reliability, and focuses on noise reduction through anti-foam additives and corrosion protection. 

Lubeguard Complete contains cleaning detergents that may help systems with varnish deposits. It’s also fully synthetic, which promises better performance. Lubegard works with both conventional and electric hydraulic systems and claims phosphorus-free formulation.

One downside, from a strictly by-the-book perspective, is that Lubeguard contradicts GM’s no-cleaner philosophy. Cleaning additives introduce new unknowns. That is, we can’t tell from the start whether they can hard steering components. Some users also report Lubeguard Complete causes steering noise or stiffness despite anti-noise claims. As a car owner, your choice is between OEM warranty protection with AC Delco versus potential synthetic performance advantages with Lubegard.

Prestone Power Steering Fluid AS 264

Prestone AS 264 Power Steering Fluid

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Prestone AS 264 Universal power steering fluid comes through as a one-size-fits-all product. I sent an Email to check with this brand if it is compatible with GM p/n 89021184. They assured that the fluid could be applied to the parts at hand without any problem and come with some additional advantages. 

Prestone’s American Vehicles Power Steering Fluid is a fully synthetic alternative to GM 89021184 specification fluid, designed for American manufacturers’ power steering systems.

This is a full-synthetic formulation with what Prestone calls “2X Anti-Wear System Protection.” The synthetic base provides better resistance to thermal breakdown compared to conventional mineral-based fluids, while the additive package includes corrosion inhibitors and anti-wear agents to protect pump components and seals.

Prestone rates this fluid for 100,000 miles of service life, double their claim for conventional power steering fluid. The extended interval comes from the synthetic base resisting oxidation and maintaining viscosity under heat and pressure better than mineral oils.

If you’re topping off a system with conventional fluid already in it, mixing is generally acceptable for American vehicles. But it might diminish performance. It’s best to flush your power steering system before replacing the existing fluid. It’s a task that can be accomplished by common hand tools. 

Compatibility

Aside from being a good alternative to GM 89021184, it also works with other vehicles with the 9985010 specification. 

GM Brands: Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile

Ford Brands: Ford, Lincoln, MercuryChrysler Brands: Dodge, Ram, Jeep, Chrysler

Related: TH350, Th400 Fluid Capacity And Type

Prestone AS 26 Vs. ACDelco 19329450

AC Delco is mineral-based while Prestone is synthetic. The synthetic base theoretically offers better wear resistance and thermal protection. However, AC Delco is the OEM fluid, exactly what GM specified. Prestone claims compatibility but is not what GM engineers designed these systems around.

For service life, AC Delco follows standard GM maintenance intervals. Prestone claims 100,000 miles, though real-world performance in GM-specific applications varies. It’s worth asking about compatibility though: while Prestone lists GM compatibility, its universal nature raises concerns. Universal products must balance different manufacturers’ requirements, which can mean they’re adequate for many systems but optimized for none.

AC Delco 19329450 performs as expected with minimal complaints. It does what GM designed it to do. Prestone AS264Y has mixed feedback in GM applications specifically. While Prestone is a trusted brand with solid performance in many vehicles, some GM owners report increased noise after switching from OEM fluid and question whether the universal formulation truly matches GM’s specifications. The “fits-all” approach works well for some, but others prefer the certainty of OEM specification.

But here’s one solid case for Prestone AS264Y: if you have multiple American brand vehicles in your garage, Prestone’s PSF makes solid sense.

What Power Steering Fluid Does GM Use?

Whether you buy a new GM vehicle or visit any authorized service store, GM vehicles use ACDelco PS fluid. The reason why GM uses ACDelco PS fluid is their long-standing partnership as well as the latter’s quality guarantee. All GM parts are made to be compatible with their fluids and oils to avoid confusion and discrepancies. 

Related: Dexos Approved Oil Lists [Dexos 1, Dexos 2, Dexos D]

Final Verdict

Let me re-emphasize one thing so you can shop for PSF confidently: GM’s original 89021184 was superseded by 89021185, and both are now replaced by 19329450, which crosses to AC Delco 10-5074. It’s the same mineral-based formulation throughout; only the part number changed. When you search for 89021184 today, parts systems automatically redirect you to 19329450.

Using OEM-approved fluid should always be your priority with your vehicle. Moreover, ACDelco comes at a lower price than the alternatives on the list. Order AC Delco 10-5074 (GM 19329450) directly or find a parts counter that keeps their cross-references updated. It’s the same fluid your 2009 Silverado was designed to use.

In case you have no choice but to choose equivalent options, go for LubeGard. LubeGard claims that their product can meet GM p/n 8902118. Furthermore, the fluid is a phosphorus-free fluid, which is not the case with ACDelco.

Don’t hesitate to shop from Amazon and do the fluid change yourself. Changing power steering fluid is straightforward with basic tools like a turkey baster or fluid pump, a funnel, and a catch pan. Most owners can complete the job in under an hour, saving the $60 to $125 a shop would charge.

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