CarCareTruth Score
Decent.
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 varyHealth 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 ▴
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 8 specifies 'safety glasses as a minimum'; applies during dilution and concentrate handling where the SDS-classified Eye Irrit. Cat 2A (H319/EU H320) is relevant. At the 1:256 working dilution used in the bucket, eye risk is not present in normal use.”
— McKee's 37
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 8 specifies butyl rubber gloves and notes 'Washing at meal time and end of shift is adequate.' The SDS classifies the concentrate as Skin Irrit. Cat 3 (EU H316), which is below the US GHS threshold for an H315 classification. At the 1:256 working dilution, no skin H-code applies; gloves are warranted only when handling the concentrate (pouring, dilution measurement).”
— McKee's 37
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from…”
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 8 is conditional: 'If spraying or other operations that generate an aerosol mist are conducted, respiratory protection for exposed personnel is recommended.' The primary use is bucket-and-sponge (no aerosol pathway). The product is also marketed as a detail spray; when used that way in a closed garage the SDS instruction applies, but outdoor or open-bay spray use does not warrant respiratory protection.”
— McKee's 37
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 #7 of 11 in Waterless & Rinseless Wash.Three above it ↓
Last reviewed July 3, 2026
TL;DR A 4-in-1 rinseless concentrate diluted 1 oz per 2 gallons; V2 added slip during the wipe and the SDS is clean (no Prop 65, no carcinogens). Lubrication is held at the rubric floor because independent dark-paint scratch evidence on V2 was not surfaced to citable sources here.
One ounce into two gallons of water, dunk a wash mitt, work panel-by-panel, dry with a clean microfiber. The concentrate also dilutes into a spray bottle for waterless or quick-detail use. V2 reportedly added slip during the wipe. Well-reviewed by owners for effective cleaning on lightly soiled paint; dark-paint scratch testing on V2 was not confirmed to citable sources here.
Best for enthusiast detailers who already bucket-wash and want concentrate economy, often in apartment or covered-parking setups. Skip it for a no-dilution spray; Mothers California Gold or Meguiar's Ultimate Waterless are simpler. Skip it for visibly road-filmed paint; rinseless and waterless both do best on light soil.
The SDS classifies the concentrate as WARNING: mild eye irritation (H319, Cat 2A) and mild skin irritation (EU H316, below US GHS H315). A concentrate splash stings the eye; the health score reflects that. No DANGER, no corrosive code, no respiratory sensitizer. No Prop 65; no carcinogens; VOC 0%; CARB compliant. The rinseless format eliminates 60-100 gallons of hose water per wash.
Both. The primary application is a bucket rinseless wash: dilute 1 oz of N-914 into 2 gallons of water, dunk a wash mitt, work one panel at a time, and dry immediately with a clean microfiber. The concentrate can also be diluted into a spray bottle for waterless wash, clay lubricant, or quick detailer use (the 4-in-1 marketing positioning). Most enthusiast users choose the bucket method because it is faster and uses less product per wash.
No. The SDS Section 15 lists no California Proposition 65 chemicals, the Amazon product listing does not flag a Prop 65 warning, and SDS Section 11 confirms 'Contains no ingredients classified as carcinogens by IARC, NTP or OSHA.' This is unusual for a concentrate-format detailing product; most California-market formulas carry a Prop 65 warning for trace impurities.
Section 3 of the McKee's 37 N-914 SDS reads 'Not Applicable'; the manufacturer treats the formula as fully proprietary. This is permitted under OSHA HCS 2012 when no ingredients exceed disclosure thresholds (Prop 65, SARA 313, IARC carcinogens), but it limits independent ingredient analysis. Available data confirms VOC 0%, pH 8.0-8.5, flash point 235 F, and no acute or chronic toxicity findings in Section 11.
The V2 reformulation specifically added lubricity to reduce wipe-off marring, and McKee's positions the formula for coated and corrected surfaces. Independent dark-paint scratch testing on this specific V2 formulation has not been verified to a citable forum source in this listing, so the lubrication score reflects that conservatism rather than a documented failure. As with any rinseless or waterless wash, a clean microfiber per panel and a wet panel surface are the technique requirements that matter most.
A true waterless wash sprays a ready-to-use formula onto the panel and the chemistry stays largely in the towel after wipe-off. A rinseless wash like N-914 is diluted into a bucket of water; the wash water with suspended dirt gets dumped down the drain at the end. Environmentally, the waterless format keeps more chemistry off the pavement, while the rinseless format still uses dramatically less water than a hose wash (2 gallons versus 60-100) and avoids storm-drain runoff from a traditional driveway wash.
Marketing copy from McKee's 37, via Amazon. Not editorial.
Guide
Car Wash Methods, Explained: Every Way to Wash a Car
Every wash method is one answer to the same question: how do you lift grit off the paint without dragging it across the clear coat. Match the method to your dirt level and water access, and when in doubt, pre-rinse.
Guide
How Often to Actually Wash Your Car (by Climate)
Every two weeks is wrong for most people. Salt-belt cars need a full wash plus undercarriage rinse every 7 to 14 days through the salt season. Coastal cars run 2 to 3 weeks year-round. Desert cars stretch to 3 to 4 weeks but need waterless or rinseless methods in between.
Guide
Two-Bucket vs Rinseless vs Waterless: When Each Makes Sense
Two-bucket is mandatory for heavy contamination like salt, mud, and post-neglect grime. Rinseless wins for apartments, winter, and weekly maintenance on protected paint. Waterless is dust-only on garage queens.
Guide
What's Actually in Your Car Shampoo: An Ingredient Guide
A car shampoo is mostly water, a small mix of soaps called surfactants, and a few helpers (chelator, pH buffer, preservative, fragrance, sometimes a wax or silicone). The surfactant mix is what makes one bottle coating-safe and another a wax-stripper.
Weekly pick
One product, one safety verdict, every week. No spam.
Optimum
No Rinse Wash & Shine (ONR Version 5)
Adam's Polishes
Waterless Wash (16oz)
P&S Detail Products
Absolute Rinseless Wash
Chemical Guys
EcoSmart Waterless Car Wash & Wax (Ready To Use)
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.