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Mediocre, but it's tough on the environment.
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Prices may varyThis product ranks #9 of 9 in Power Steering Fluid.Three above it ↓
Last reviewed May 26, 2026
TL;DR Mineral-oil power steering fluid with a seal-conditioning additive · markets as "universal" but lists no named OEM specifications (no Pentosin CHF 11S, Dexron VI, Honda PSF, or equivalent). Best suited for older domestic vehicles with no strict OEM PSF requirement, particularly those with minor seal weeping. Prop 65 warning applies (per older SDS version). Not appropriate for European platforms or Honda/Acura hydraulic-assist systems.
Lucas Power Steering Fluid with Conditioners is a mineral-oil/petroleum-distillate PSF with a seal-conditioning additive package · "with Conditioners" is the defining feature and the source of both its appeal and its limitations. The product claims universal compatibility with all power steering systems, petroleum or synthetic, but does not name any specific OEM specification (no Dexron VI, Mercon V, Honda PSF, Pentosin CHF 11S, Mopar ATF+4, or equivalent). Highly rated by a large owner base, it's clearly popular as a top-off fluid for older domestic vehicles where a generic mineral-oil PSF will do. The seal conditioner is most useful for systems with minor seal weeping · it can swell slightly dried or shrunken seals. For systems with healthy seals, the conditioner is unnecessary, and some technicians advise against it for routine use.
Best for owners of older domestic vehicles (GM, Ford, Chrysler) whose owner's manual specifies a generic power steering fluid with no named OEM spec requirement, especially if the system has a minor weeping seal. Skip if your vehicle has electric power steering (EPS) · EPS systems do not use hydraulic fluid. Skip for European vehicles (BMW, Mercedes, Porsche, Audi, Volvo) · those platforms almost universally require Pentosin CHF 11S or an equivalent named hydraulic fluid, and a generic mineral-oil PSF with seal conditioner is not an approved substitute. Skip for Honda and Acura hydraulic-assist systems · those require Honda PSF specifically.
Neither SDS version classifies the mixture as hazardous under OSHA HazCom 2012 at a level that produces a signal word · the handling hazard is low. A Prop 65 warning applies per the older SDS version (reproductive concern). Flash point is 246°C; vapor pressure is negligible at ambient temperature · inhalation risk during a routine top-off is not a concern. Eye protection is warranted during a full system flush when old fluid is displaced at the reservoir. Drain-destined: old fluid collected during a flush must be taken to an automotive recycler or retailer that accepts used oil · do not pour down a household drain or storm sewer.
No · and this is important. European platforms from BMW, Mercedes, Porsche, Audi, Volvo, and others almost universally require a dedicated hydraulic fluid (typically Pentosin CHF 11S or CHF 202). Lucas Power Steering Fluid lists no named OEM approvals and carries a seal-conditioning additive that is not compatible with those systems. Using it in a European platform risks seal degradation over time. Check your owner's manual and use only the specified fluid.
Seal conditioners can temporarily reduce or stop minor weeping leaks by causing dried or slightly shrunken seals to swell back toward their original size. For a system with a genuine significant leak, the correct fix is seal replacement · not a conditioned fluid. For systems with healthy seals, adding a seal conditioner is unnecessary and some technicians discourage it because the swelling effect is not targeted. If you have a weeping seal on an older domestic vehicle, this fluid may provide temporary relief; it is not a substitute for mechanical repair.
The product listing carries a Prop 65 warning, and the older Lentus SDS explicitly lists Toluene as a Prop 65 reproductive hazard. The more recent official Lucas Oil SDS states 'no Prop 65 listed substances known to be present' · a discrepancy that may reflect a formula change or an incomplete update. Handle with normal precautions; wash hands after use.
Honda and Acura hydraulic-assist systems require Honda PSF specifically. Lucas Power Steering Fluid is a universal mineral-oil PSF with no Honda approval. While the product claims universal compatibility, Honda's own guidance specifies Honda PSF to maintain seal and pump integrity. Using a non-approved fluid in these systems is not recommended for long-term use.
The best fit is older domestic vehicles (GM, Ford, Chrysler) that specify a generic mineral-oil power steering fluid and whose owner's manual does not require a named OEM spec. It is commonly used as a top-off fluid for these platforms. It is not appropriate for vehicles requiring Dexron-specified ATF-type PSF, Honda PSF, Pentosin CHF 11S, or any other named specification.
Marketing copy from Lucas Oil, via Amazon. Not editorial.
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