CarCareTruth Score
Mediocre.
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Prices may varyAbout 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 Section 2 classifies H319 (serious eye irritation). Sold in a standard consumer can poured into a narrow fuel-tank fill neck · drip-back and splash during the pour are realistic for this format.”
— BlueDevil Products
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.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 2 classifies H315 (skin irritation). Brief accidental drip contact during a standard pour is the realistic exposure route; SDS Section 8 specifies gloves without naming a chemical-resistance material, which is treated as generic guidance rather than an escalation trigger.”
— BlueDevil Products
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.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 2 classifies H332 (harmful if inhaled, Cat 4 · not H331, so recommended rather than required) and H336 (narcotic vapor effects). Xylene is individually disclosed at 45-50% and the mixture's flash point is -16°C, an extremely volatile carrier consistent with a real inhalation pathway during the pour.”
— BlueDevil Products
U.S. regulatory standard
29 CFR 1910.134(a); 1910.1200(f)
“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…).”
Triggered by GHS H336 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 #9 of 10 in Fuel System Cleaner.Three above it ↓
Last reviewed July 7, 2026
TL;DR This is generic solvent chemistry with no named detergent-active behind the "Complete Fuel System" claim, so there's no way to judge which system components it reaches. The brand states it's safe for gas and diesel engines; nothing contradicts that, though it's unconfirmed. A safety note applies at concentrate strength, covered below.
BlueDevil markets this as a "Complete Fuel System Cleaner," but the disclosed chemistry is generic solvent only, with no detergent class named. The mechanism is solvent dissolution, not chemistry matched to injectors, valves, or combustion-chamber deposits, so the "complete" claim isn't substantiated. Directions call for a one-time pour into a half-full tank, a symptom-driven flush rather than maintenance, suited to gasoline and diesel per the brand.
Fits an owner chasing a specific symptom · rough idle, hesitation, a failed emissions test · on either fuel type per the brand's claim. Owners on Top Tier gasoline won't see much difference. Misfires or injector failure beyond typical fouling need professional service, not a solvent pour-in.
The DANGER signal word is health-driven, not just flammability · inhalation harm (H332), skin/eye irritation (H315, H319), a suspected-carcinogen classification (H351), and vapor narcotic effects (H336) during the pour. A Prop 65 warning applies (ethylbenzene). Eye and lung protection are worth having on hand. The product enters the tank and combusts · exhaust, not wastewater, is the environmental endpoint.
The label and Amazon listing both state the formula is safe for gasoline and diesel engines. The disclosed chemistry is a generic solvent blend with no fuel-type-specific additive, so there's no obvious chemistry reason it would behave differently between the two · but no independent test data confirms real-world diesel performance specifically; this is a brand claim, not an independently verified one.
None is disclosed. SDS Section 3 lists only solvents · xylenes, isopropyl alcohol, acetone, and ethylbenzene · with no polyetheramine, polyisobutylene, or enzyme-class detergent chemistry named anywhere in the formula. The cleaning action is solvent dissolution, not a targeted detergent matched to specific fuel-system components.
No documented incompatibility with fuel-injected engines has been reported, but neither the SDS nor the brand's Amazon listing makes an explicit O2-sensor or catalytic-converter-safe claim · verify with the manufacturer before use if that's a specific concern.
Marketing copy from BlueDevil Products, via Amazon. Not editorial.
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