CarCareTruth Score
Mediocre, but wear gloves and ventilate.
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Prices may varyThe manufacturer's Safety Data Sheet classifies this product with one or more GHS Category 1 health hazards — the most severe tier. The hazard statements in quotes below are the verbatim GHS language from the SDS, as required by OSHA's Hazard Communication Standard. The line under each statement translates the GHS classification into plain language.
GHS Category 1 aspiration toxicity — thin, oily liquids can slip into the lungs if swallowed, causing chemical pneumonia.
If swallowed, inhaled, or splashed in eyes:
Call Poison Control immediately at 1-800-222-1222 (US, 24/7, free) and have the product container with you. Poison Control's standing guidance is to not induce vomiting after chemical exposure; they will direct first-aid steps based on the specific product.
About this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Health score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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From the manufacturer’s Safety Data Sheet, Section 8
“SDS §2 classifies H320 (causes eye irritation, Cat 2B). The rubric's escalation table promotes eyes to recommended only via H319 (Cat 2A) or required via H318; neither is present in this SDS's §2 classification, so the aerosol-mist trigger sets the tier at situational. SDS §8 lists safety glasses with wrap-around lens or goggles as recommended equipment.”
— Berryman
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for skin. Absence does not imply “not needed” — consult the full Safety Data Sheet.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS §2 classifies H335 (respiratory irritation) and H336 (narcotic effects, drowsiness/dizziness) at the mixture level. H335 maps to recommended per the category's explicit escalation table; H331/H330/H334 (the codes that would force required) are absent. SDS §7 directs use only outdoors or in a well-ventilated area; SDS §8 directs respiratory protection sufficient to reduce exposure to permissible limits if necessary.”
— Berryman
U.S. regulatory standard
29 CFR 1910.1200(f); 1910.132(d)
“The employer shall assess the workplace to determine if hazards are present, or are likely to be present, which necessitate the use of personal protective equipment.”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
The published Safety Data Sheet for this product does not specify ventilation protection for consumer use.
Workplace context
29 CFR 1910.134(a); 1910.1000
“the primary objective shall be to prevent atmospheric contamination [via] accepted engineering control measures (for example, enclosure or confinement of the operation, general and local ventilation, and substitution with less toxic materials).”
Triggered by GHS H335 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
This product ranks #15 of 16 in Penetrating Oil / Multi-Purpose Lubricant.Three above it ↓
Last reviewed July 5, 2026
TL;DR DANGER-rated aerosol: the carrier can be fatal if swallowed and enters the airways, and the spray mist is a real breathing-passage irritant, so keep it away from kids and pets. Past that, it's an ordinary aerosol penetrant on light-to-moderate rust, with no independent evidence it beats the category's better-known names.
A thin, fast-wicking spray that works into a rusted or seized fastener and breaks the bond between corrosion and metal so the piece can turn again. Spray a generous coat on the threads, wait a few minutes, then try the fastener; a stubborn bolt may need a second try. The formula includes a corrosion-inhibitor additive meant to leave a residual film that resists quick re-seizing, though no independent testing confirms how long the protection lasts.
A reasonable pick for a home garage that already keeps Berryman's other solvent-heavy cleaners on the shelf and wants a familiar-brand can for a stuck bolt or hinge. Frequent users, or anyone working in a garage without much airflow, have lower-VOC and non-aerosol options worth weighing against this aerosol's inhalation exposure.
The DANGER rating traces to an aspiration hazard: if swallowed, the thin carrier can reach the lungs rather than the stomach, so do not induce vomiting and seek medical attention immediately. The same classification covers respiratory and eye irritation from the spray mist, so eye protection is a reasonable precaution, though the chemistry doesn't call for a respirator. The carrier is also very toxic to aquatic life with long-lasting effects and isn't readily biodegradable; the solvent load puts it in a higher VOC bracket, and it doesn't meet California's VOC limit for penetrants, though it meets separate regional VOC rules elsewhere. This scoring is based on the manufacturer's safety data sheet from 2015, with no newer revision on file, so the hazard data could be stale if the formula has since changed.
The SDS classifies an aspiration hazard at the mixture level: if swallowed, the thin, low-viscosity carrier can enter the lungs rather than the stomach, which is a serious risk that drives the DANGER signal word regardless of how the product is normally used (sprayed on a fastener, not ingested). The same SDS section also lists respiratory irritation and eye irritation from spray exposure, and a mild narcotic effect (drowsiness or lightheadedness) from breathing concentrated vapor in an unventilated space.
No. The SDS explicitly states this product is not subject to Proposition 65 labeling requirements, and no Prop 65 warning text appears on the can's front label. This is worth noting because some retailer listings for this ASIN carry a generic Prop 65 flag that the underlying safety data sheet does not support.
No. The SDS states the product's VOC content does not meet the California Air Resources Board's consumer-product limit for penetrants, and the manufacturer's own product page notes it is not VOC-compliant in California. The formula does comply with the separate, less stringent regional VOC model rules used by some other states.
The SDS classifies the formula as very toxic to aquatic life with long-lasting effects, and states the carrier is not readily biodegradable. Because penetrating oil is applied to a fastener and left in place rather than rinsed down a drain, the environmental scoring for this category applies a reduced-impact pathway compared to a rinse-off product, but the underlying aquatic-toxicity and biodegradability profile is still a real trade-off of the petroleum-distillate chemistry.
The SDS directs use only outdoors or in a well-ventilated area and calls out avoiding breathing the fumes, gas, mist, vapor, or spray. Aerosol delivery creates a fine mist near face and hand level during application, which is the primary inhalation exposure pathway for this product, more so than for a pump-spray or drip format of similar chemistry.
Marketing copy from Berryman, via Amazon. Not editorial.
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