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 2 acute oral toxicity — classified as toxic if swallowed.
GHS Category 2 acute dermal toxicity — classified as toxic in contact with skin.
GHS Category 2 acute inhalation toxicity — classified as toxic if inhaled.
If swallowed, inhaled or on skin:
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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Translated from the manufacturer’s Safety Data Sheet, Section 8
SDS §8 specifies splash-proof goggles. H370 (specific organ toxicity, single exposure) covers optic nerve damage · even accidental eye splash during pour-fill carries a real chemistry basis for protection. GHS06 sets a recommended floor; H370 escalates to required.
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
H311 (toxic in contact with skin, Cat 3) is the SDS §2 basis for skin protection. SDS §8 specifies chemical-resistant gloves (butyl rubber or Viton) where skin contact is possible. Pour-fill is the primary contact point.
U.S. regulatory standard
29 CFR 1910.132(d); 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from skin absorption of harmful substances.”
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
H331 (toxic if inhaled, Cat 3) and GHS06 (skull and crossbones) set the recommended floor for respiratory precaution. SDS §8 notes organic vapor cartridge respirators are NOT recommended for methanol vapor · a supplied-air or SCBA respirator is required only if exposure limits are exceeded. Recommended for enclosed-space or prolonged-use scenarios.
U.S. regulatory standard
29 CFR 1910.134(a)(1)–(2)
“When effective engineering controls are not feasible… appropriate respirators shall be used.”
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 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.
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.
This product ranks #14 of 19 in Washer Fluid.Three above it ↓
Last reviewed May 25, 2026
TL;DR Rated to −27°F · adequate for most of the continental US, though sibling SKUs reach deeper cold. The 3-in-1 positioning (de-icer plus bug wash plus a water-beading additive) is a genuine year-round versatility play, and the broad, well-rated owner feedback backs the cleaning claims. Health score is 1.0/10 · the lowest tier · due to a DANGER-class formula with serious handling hazards. Methanol-free alternatives exist for households where that matters.
Prestone AS658P is a year-round, ready-to-use washer fluid rated to −27°F, putting it in the mid-tier for freeze protection · adequate for most US winters but a step shy of the deepest dedicated winter de-icers. The 3-in-1 positioning combines cold-crack protection, a bug-removal surfactant package (the alkaline pH 10.7-10.8 in SDS Section 9 confirms a real cleaning chemistry distinct from a pure de-icer), and a water-beading additive. The community signal is strong, well-reviewed by a large owner base, and supports the cleaning and year-round versatility claims. Not for sale in California.
Best for one-bottle daily drivers who don't want to swap between a winter de-icer and a summer bug wash and live in a climate where −27°F protection is enough. Skip it if you face routine sub-−30°F cold · the sibling AS250 de-icer at −34°F is the better cold-climate pick · or if your household has chemistry concerns, in which case alcohol-free formulas score significantly higher on health. Not available in California.
SDS 757 carries DANGER with H301 (oral toxicity), H311 (skin toxicity), H331 (inhalation toxicity), and H370 (single-exposure optic nerve and central nervous system damage). Methanol is the active solvent at 26-34% (SDS Section 15 Prop 65 disclosure). Proposition 65 applies. SDS Section 8 specifies splash-proof goggles and chemical-resistant gloves (butyl rubber or Viton); pour-fill is the main exposure point. Organic vapor cartridge respirators are explicitly NOT recommended for methanol vapor · supplied-air or SCBA only if exposure limits are exceeded. Drain-destined via stormwater; no aquatic H-codes in SDS Section 12 (methanol LC50 in fathead minnows is 29,400 mg/L · very low aquatic toxicity).
The product label and Amazon title state −27°F protection. SDS Section 9 lists a freeze/melting point below 28°F (below −33.3°C) for the higher-methanol industrial pack; the −27°F rating on the consumer label is the all-season figure. That puts it in the mid-tier for freeze protection · adequate for most of the continental US, but the sibling AS250 de-icer reaches −34°F if you face deeper cold.
Per the Amazon title and front-label imagery, the formula combines three functions: de-icing (methanol-based cold-crack protection), bug-wash (alkaline surfactant package · note the SDS §9 pH of 10.7-10.8, much higher than the AS250 de-icer's pH 5), and a water-beading additive. It is positioned as a year-round single-bottle alternative to the season-specific AS250 (winter) and Bug Wash (summer) siblings.
Yes. SDS 757 lists methanol (CAS 67-56-1) at 15 to less than 35% by weight; the SDS Section 15 Proposition 65 disclosure narrows the actual concentration to 26-34%. Methanol is the active de-icing and cleaning solvent. The DANGER signal word and Proposition 65 warning on the label both stem from the methanol content. Ethylene glycol was removed from the formula in the 2020 reformulation.
No. Section 1 of the SDS explicitly states the product is not for sale in California due to CARB consumer-product VOC restrictions on methanol. California residents should look for an alcohol-free or low-VOC washer fluid formulated for CARB-restricted markets.
Methanol ingestion is a medical emergency. The SDS classifies this product as H301 (toxic if swallowed) and H370 (single-exposure organ toxicity · optic nerve and central nervous system). Contact Poison Control (1-800-222-1222 in the US) or emergency services immediately. Do not induce vomiting. Keep the product out of reach of children and pets, especially in the orange/yellow jug, which is visually similar to consumer beverages.
The listing for Prestone AS658P All Season 3-in-1 Windshield Washer Fluid carries a California Prop 65 warning. Prestone AS658P All Season 3-in-1 Windshield Washer Fluid is a working automotive fluid rather than a passive part, so the warning points at the formulation itself. The manufacturer's Safety Data Sheet is the primary source for what is in it: the hazard classification and the PPE tiers on this page are translated from that sheet, and the full SDS is linked from the safety panel. California requires the warning whenever exposure to any of roughly 900 listed substances is possible. It does not name which substance applies to a given product, and it states no dose or risk level, so it is not on its own a measure of how hazardous this fluid is in normal use.
Marketing copy from Prestone, via Amazon. Not editorial.
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