CarCareTruth Score
Recommended.
Opens Amazon in a new tab. No account needed to look.
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
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.
Show details for all categories ▾Hide details ▴
No PPE specified in published sources for eyes. Absence does not imply “not needed” — consult the full Safety Data Sheet.
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
“Aerosol form factor creates fine mist near face level. No inhalation H-codes (H335, H331, H330, H334) appear in §2 mixture classification. The aerosol mist itself is the inhalation exposure trigger in enclosed or poorly ventilated spaces.”
— Fluid Film
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 ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
This product ranks #1 of 15 in Penetrating Oil / Multi-Purpose Lubricant.
Last reviewed May 26, 2026
TL;DR No Prop 65 chemicals, no health-hazard GHS codes · the DANGER rating is driven entirely by the flammable aerosol format. Owners cite it most often for seized hinges and multi-season underbody rust prevention, and it's earned a devoted following in the salt belt. The non-drying residue keeps fasteners protected at the next service rather than evaporating away. Aerosol mist in enclosed spaces is the primary inhalation exposure concern.
Fluid Film NAS delivers a non-drying protective oil to corroded joints to free seized fasteners and prevent rust. The manufacturer describes it as a lanolin-influenced formula (per the manufacturer's product page); the SDS discloses a heavy petroleum base oil with a sulfonated corrosion inhibitor · no petroleum solvents or naphtha in the carrier. owners and BITOG forum threads (2020·2025) document consistent success on light-to-moderate rust, and it has earned a devoted following in the salt belt. The non-drying film is the product's defining differentiator: it stays active and protects threads at the next service rather than evaporating away.
Salt-belt owners and seasonal rustproofing projects are the natural fit. BITOG threads (2020·2025) document multi-season results from annual underbody application. Skip it if you need the fastest possible penetration on deeply corroded fasteners · thin-solvent competitors wick faster initially. Limit enclosed-space use; aerosol mist is the primary inhalation concern.
DANGER from H222 (extremely flammable aerosol) and H229 (pressurized container) · physical-hazard codes only, no health-tier GHS codes in §2. SDS §15 (2024 Eureka Chemical revision) explicitly states no Proposition 65 chemicals. Aerosol mist in enclosed spaces is the inhalation exposure pathway. Environmental: CARB 310 compliant (VOC <219 g/L), no aquatic toxicity classification at mixture or ingredient level. The petroleum base-oil carrier is not readily biodegradable.
The Safety Data Sheet for Fluid Film NAS Aerosol Penetrant & Lubricant carries a DANGER signal word, with classified hazards including H222 (extremely flammable aerosol); H229 (pressurized container: may burst if heated). See the PPE breakdown above for use-case-specific guidance translated from the SDS hazard codes.
CarCareTruth scores Fluid Film NAS Aerosol Penetrant & Lubricant at 7.5 out of 10 on the composite CCT score, with a health sub-score of 9.0/10. The CCT score blends real-world effectiveness, ingredient health impact pulled from the manufacturer's safety sheet, and environmental footprint against a published category rubric. See the methodology link on this page for the full scoring breakdown.
Per the Safety Data Sheet ingredient disclosure: SDS §3 (rev. 2024-01-01): Refined petroleum oil, hydrotreated heavy paraffinic (CAS 64742-54-7) 40·80%; Petroleum gases, liquified, sweetened (CAS 68476-85-7) 1·25%; Benzenesulfonic Acid, Di-C10-18-alkyl derivs., calcium salts (CAS 93820-57-6) 1·10%.
Marketing copy from Fluid Film, via Amazon. Not editorial.
Weekly pick
One product, one safety verdict, every week. No spam.
Boeshield
T-9 Rust & Corrosion Protection
Kroil
Penetrant Original Aerosol
Sea Foam
Deep Creep
Mouse Milk
Penetrating Oil
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.