CarCareTruth Score
Decent, but it's tough on the environment.
Saved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
As an Amazon Associate I earn from qualifying purchases. Full disclosure
The 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:
The aspiration hazard (H304) is about the liquid being swallowed and reaching the airway, not about breathing fumes during normal use.
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.
Show details for all categories ▾Hide details ▴
Translated from the manufacturer’s Safety Data Sheet, Section 2
H319 (eye irritation Cat 2) in SDS §2 · the pour from a consumer bottle into a fuel-tank fill neck creates realistic splash risk.
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses 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.
Only when: splash risk
Translated from the manufacturer’s Safety Data Sheet, Section 2
H315 (skin irritation Cat 2) in SDS §2 · brief accidental drip contact during the standard pour step.
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
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.
Translated from the manufacturer’s Safety Data Sheet, Section 2
H335 respiratory irritation in SDS §2, driven by aromatic solvent carrier fraction (trimethylbenzenes + naphtha combined 11-26%); H336 narcotic vapour effects also present. Outdoor pour adequate for most uses.
U.S. regulatory standard
29 CFR 1910.1000; 1910.1200
“Each employer shall assure that no employee is exposed [in excess of the PEL]…”
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.
Scope of these PPE tiers. The tiers on this page translate the product's Safety Data Sheet where one is published, plus its ingredient chemistry, into a comparable rating. They describe a formulation, not a situation: a tier is not a safety determination for any specific user, task, quantity, or environment. The manufacturer's label and use instructions govern how the product is handled. Where the product is used at work, the employer's PPE program and hazard assessment under 29 CFR 1910.132 decide what protection is selected, not this page.
No warranties. CarCareTruth makes no warranties, express or implied, and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose.
Last reviewed July 31, 2026
TL;DR PEA-class chemistry targets injectors and intake valves · zones backed by the SDS §3 active · but the brand's combustion chamber claim goes beyond what that chemistry class independently delivers. DANGER signal word from aspiration hazard (H304). Safety goggles are warranted for the pour step; the SDS §15 Prop 65 warning covers multiple aromatic solvent components.
Gasoline Extreme uses PEA-based detergent chemistry at a concentration the brand markets as professional-grade. The SDS §3 active class credibly covers zone 1 (tank, lines, injectors) and zone 2 (intake manifold and valves); the brand also claims combustion chamber cleaning (zone 3), but that zone exceeds what PEA chemistry alone delivers. Treatment is 12 oz per 20 gallons, at fill-up or every 10,000 miles. Well-reviewed owner feedback supports the injector and intake cleaning function · no independent SAE paper for this formulation was found.
Best for gasoline engine owners running non-Top Tier fuel who suspect injector and intake valve carbon buildup · PEA chemistry is the right active class for that scenario. Drivers who consistently use Top Tier gasoline already receive a deposit-prevention detergent package. For misfires or rough idle beyond typical carbon fouling, professional ultrasonic injector service is the right call. Diesel owners: this is formulated for gasoline only.
SDS §2 classifies this mixture with a DANGER signal word, driven by H304 aspiration hazard. The SDS §4 first-aid guidance states vomiting must not be induced if ingested. Safety goggles are warranted for the pour step; H335 respiratory irritation from concentrate vapor is the inhalation concern. The product combusts in the engine · exhaust byproducts are the environmental endpoint, not wastewater.
The label specifies 12 oz for every 20 gallons of gasoline. The 16 oz bottle is sized as a one-tank treatment at that rate. Pour directly into the fuel tank at fill-up or every 10,000 miles.
The product page and label do not specifically address GDI engines. PEA-class chemistry is well-studied for intake valve carbon deposits in GDI engines · port injection does not rinse GDI intake valves, making PEA particularly relevant for that application. However, the brand has not published GDI-specific dosing guidance or test data for this formula.
The brand claims combustion chamber cleaning on the product label. PEA chemistry credibly addresses injectors and intake valves; combustion chamber carbon at high temperatures is a harder target for PEA alone. No independent test data confirming combustion chamber cleaning with this specific formulation was found.
SDS §15 lists multiple aromatic solvent components · including cumene, ethylbenzene, naphthalene, toluene, benzene, and others · as California Prop 65-listed substances for cancer and/or reproductive harm. These are present as minor fractions of the carrier solvent system. The product is currently listed as out of stock on Amazon.
The brand does not publish explicit compatibility statements for catalytic converters or oxygen sensors on the product page or label reviewed. No community-reported compatibility failures were found. PEA-class chemistry is generally regarded as catalyst-safe at normal fuel additive concentrations.
Marketing copy from Hot Shot's Secret, via Amazon. Not editorial.
Weekly pick
One product, one safety verdict, every week. No spam.
Chevron
Techron Concentrate Plus Complete Fuel System Cleaner
Gumout
Multi-System Tune-Up
Red Line
SI-1 Complete Fuel System Cleaner
Rislone
Hy-per Fuel Heavy Duty Injector Cleaner
As an Amazon Associate I earn from qualifying purchases. Full disclosure
Community
0 postsShare how you use this product
Drop a quick comment or post a full review with photos and a star rating.
Sign in to postNew here? Create a free account.