AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid
AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid (PSF) is a fully synthetic hydraulic fluid built for the power steering systems of most domestic and foreign passenger cars and light trucks. The formulation pairs a low-pour-point synthetic base with a friction-reducing additive system, making it the right choice for owners servicing a vehicle whose manufacturer calls for a dedicated power steering fluid rather than an automatic transmission fluid.
Synthetic chemistry for long component life
Multi-Vehicle Synthetic Power Steering Fluid relies on synthetic chemistry that delivers strong lubricity and friction-reduction properties. Pump vanes, rotors, control valves, and pressure hoses see consistent fluid film coverage during pressure spikes through the steering rack, which translates into reduced wear and stress on the pump assembly and a longer service life for the hydraulic circuit.
Quiet operation in cold weather
Conventional power steering fluid can thicken in cold weather to the point that flow through the pump and lines is restricted, producing the audible "whine" common at startup on subzero mornings. Multi-Vehicle Synthetic Power Steering Fluid is built with a pour point of -51 degrees C (-60 degrees F) per ASTM D97 and a Brookfield viscosity of 5,690 cP at -40 degrees C per ASTM D2983, both of which support fluid mobility under cold-soak conditions. The result is faster pressure build at the pump, quieter operation, and reliable steering assist as the system warms.
Thermal stability for hot, hardworking systems
Power steering fluid sees sustained heat in heavy traffic, when towing, and during slow-speed maneuvering with the wheel hard over against pump pressure. Multi-Vehicle Synthetic Power Steering Fluid resists thermal breakdown across that operating range, with a flash point of 230 degrees C (446 degrees F) and a fire point of 250 degrees C (482 degrees F) measured by ASTM D92. Stable viscosity at temperature keeps internal clearances sealed and helps components remain clean across long service intervals.
Anti-wear protection at the pump
Steering pumps work under high boundary-lubrication loads, especially during stationary parking maneuvers and when the steering is locked against the stops. Multi-Vehicle Synthetic Power Steering Fluid posted a 0.46 mm wear scar in the Four-Ball Wear Test (ASTM D4172, 40 kg, 75 degrees C, 1,200 rpm, 1 hour), confirming a thin, durable wear-protection film between sliding metal surfaces. That margin is important on aging vehicles where pump tolerances have widened and the original-fill fluid has lost its additive package.
Seal conditioning and foam control
Long-lived steering systems depend on pliable elastomer seals at the pump shaft, the rack pinion, and the high-pressure hose fittings. Multi-Vehicle Synthetic Power Steering Fluid helps these seals remain soft to prevent leaks, and the formulation produces a Foam Tendency of 0/0, 10/0, 0/0 across the three sequences of ASTM D892. Low foam translates into consistent hydraulic pressure delivery, no spongy steering feel, and no air-induced cavitation at the pump.
Recommended applications and service intervals
Multi-Vehicle Synthetic Power Steering Fluid is built for hydraulic-assist power steering systems calling for any of the following manufacturer specifications: AMC C 4124; BMW 82 11 0 148 132, 83 29 0 429 576, 81 22 1 468 879, 82 11 1 468 041; Chrysler MS-1872, MS-5931, MS-11655, MS-9602; Ford M2C138-CJ, ESW-M2C128-C&D, M2C195-A, M2C204-A, M2C33-F; GM/Saginaw PSF 9985010, 9985835, 89021184; Hyundai/Kia PSF-3, PSF-4, PSF 00232-19017; Mercedes-Benz 236.3, 345.0; Mitsubishi Diamond SP III and PS Fluid; Navistar TMS 6810; Nissan PSF-II; Porsche 000 043 206 56; Saab 93160548; Subaru K0209A0080; Toyota PSF Type EH (P/N 008886-01); Volvo 1161529, 30741424; VW/Audi TL-52146, G002000, G 004 000 M2, G 004 000 M7, G 004 000 M8.
- Service interval: change the vehicle's power steering fluid at the original-equipment-manufacturer (OEM) interval and follow the OEM service procedure for capacity and bleed steps.
- Vehicles whose factory specification calls for an automatic transmission fluid in the power steering reservoir, such as a Dexron III, Mercon V, Dexron VI, or Mercon LV ATF, should be serviced with the specified ATF rather than this PSF.
- Electric power steering systems use an electric motor in place of a hydraulic pump and reservoir, do not use steering fluid, and are outside the application range of this product.
- Outside the United States and Canada, follow the vehicle manufacturer's recommended service interval and fluid specification.
The companion AMSOIL Fluid Extraction Pump (G2576) supports a clean changeover by removing existing fluid from the reservoir before fresh fluid is added. Multi-Vehicle Synthetic Power Steering Fluid is compatible with conventional and synthetic power steering fluids for top-off, but a complete fluid exchange after the system has been flushed produces the most consistent quiet-operation and wear-protection benefits. Aftermarket steering-pump conditioners and stop-leak additives are not needed with this synthetic formulation.
Typical technical properties
| Property | Value |
|---|
| Kinematic Viscosity at 100 degrees C, cSt (ASTM D445) | 7.5 |
| Kinematic Viscosity at 40 degrees C, cSt (ASTM D445) | 33.8 |
| Viscosity Index (ASTM D2270) | 197 |
| Brookfield Viscosity at -40 degrees C, cP (ASTM D2983) | 5,690 |
| Color | Yellow/Brown |
| Clarity | Clear |
| Pour Point, degrees C (degrees F) (ASTM D97) | -51 (-60) |
| Flash Point, degrees C (degrees F) (ASTM D92) | 230 (446) |
| Fire Point, degrees C (degrees F) (ASTM D92) | 250 (482) |
| Four-Ball Wear Test (ASTM D4172, 40 kg, 75 degrees C, 1,200 rpm, 1 hr), Scar, mm | 0.46 |
| Foam Tendency (ASTM D892) | 0/0, 10/0, 0/0 |
Order AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid
Available package sizes cover routine top-off, full system flushes, and shop-volume use: 16 oz. bottle (PSFCN-EA), case of twelve 16 oz. bottles (PSFCN-CA), 5-gallon pail (PSF05-EA), and 55-gallon drum (PSF55-EA). The product is backed by the AMSOIL Limited Liability Warranty. Confirm the exact OEM power steering specification for the vehicle with the AMSOIL vehicle lookup guide, and review related passenger-car fluid choices in the car oil guide. Order Now.
Customer reviews
Power Steering
Its great having Amsoil Power Steering Fluid in my system. Can't get a better oil!
By Leon from California on June 15, 2026.
Would recommend this to a friend.
Another great AMSOIL Product
My Jeep Wrangler with 108,000 miles and 35" tires was starting to get a little hard to turn in the cooler mornings this winter, so I purchased several bottles of the AMSOIL Power Steering Fluid and drained out some of the old and replaced it with AMSOIL. Now my Jeep is turning smooth again, even in the cooler mornings! I use AMSOIL products in all my cars, trucks, boats, and small engine power equipment.
By Gary from South Carolina on March 30, 2026.
Would recommend this to a friend.
Works great
Works great in all of my cars/trucks.
By JohnnyTurbo from Virginia on March 17, 2026.
Would recommend this to a friend.
Read all 52 reviews
Frequently asked questions
Is power steering fluid universal?
No. Vehicle manufacturers publish specific power steering fluid requirements, and using a fluid that does not meet the specification can damage the pump, the steering rack, and the seals. Multi-Vehicle Synthetic Power Steering Fluid covers a wide list of OEM PSF specifications spanning AMC, BMW, Chrysler, Ford, GM/Saginaw, Hyundai/Kia, Mercedes-Benz, Mitsubishi, Navistar, Nissan, Porsche, Saab, Subaru, Toyota, Volvo, and VW/Audi, which makes it a single-bottle option for most domestic and foreign passenger cars and light trucks running a hydraulic-assist system.
Can transmission fluid be used as power steering fluid?
Only when the vehicle manufacturer specifies it. Some hydraulic-assist power steering systems are designed around an automatic transmission fluid such as Dexron III, Mercon V, Dexron VI, or Mercon LV, while others are designed around a dedicated PSF. Substituting an ATF in a system that calls for a PSF, or substituting a PSF in a system that calls for an ATF, changes friction characteristics and seal compatibility and can lead to noise, leaks, or premature pump wear.
What color is AMSOIL Multi-Vehicle Synthetic Power Steering Fluid?
The fluid is yellow to brown in color and clear in appearance, as listed in the typical technical properties table above. Color alone is not a reliable indicator of fluid condition, and color comparisons against other PSF brands or older factory-fill fluid are not a substitute for the OEM specification or the published service interval.
Does this fluid work in electric power steering systems?
No. Electric power steering systems use an electric motor instead of a hydraulic pump and reservoir, and they do not require steering fluid of any kind. Multi-Vehicle Synthetic Power Steering Fluid is built for hydraulic-assist systems with a pump, reservoir, pressure hose, and rack or gearbox.
How often should power steering fluid be changed?
Change power steering fluid at the original-equipment-manufacturer interval and follow the OEM service recommendations for capacity and procedure. Many vehicles do not list a fixed mileage interval and instead rely on a fluid condition or color check, in which case the long thermal stability and anti-wear margin of a synthetic PSF helps maintain consistent steering performance between scheduled inspections.
Is the synthetic formulation compatible with the fluid already in the reservoir?
Multi-Vehicle Synthetic Power Steering Fluid is compatible with conventional and synthetic power steering fluids for top-off purposes, but a complete fluid exchange produces the most consistent low-temperature operation, anti-wear, and seal-conditioning benefits. The companion AMSOIL Fluid Extraction Pump (G2576) makes pulling old fluid from the reservoir straightforward during the conversion.
