CarCareTruth Score
Decent, but it's tough on the environment.
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 varyThis product ranks #6 of 16 in Coolant / Antifreeze.Three above it ↓
Last reviewed May 26, 2026
TL;DR A silicate-free, borate-free phosphate-HOAT coolant pre-diluted 50/50 for Asian-make vehicles · Toyota, Lexus, Scion, Hyundai/KIA, and Mitsubishi platforms that call for the red Asian-style HOAT chemistry. Multiple OEM specifications meeting (JIS K 2234-1994, Hyundai/KIA MS 591-08, Mitsubishi ES-64217, Ford WSS-M97B55-A, ASTM D3306). Ethylene glycol base · H302 (harmful if swallowed) plus H373 (may cause kidney or liver damage through prolonged or repeated swallowing) mean the standard ingestion-hazard precautions apply; households with pets or children should keep stored coolant secured.
Zerex Asian Vehicle Red is a 50/50 pre-diluted Hybrid Organic Acid Technology (HOAT) coolant built around a phosphate inhibitor · the chemistry pattern Asian OEMs (Toyota, Lexus, Scion, Hyundai, KIA, Mitsubishi) use in place of the silicate-and-OAT blends typical of European and American HOAT coolants. Silicate-free, borate-free, and 2-EHA-free, with a 5-year / 150,000-mile service interval per the label. The pre-diluted bottle pours directly into the cooling system · no mixing · and delivers approximately −34°F freeze protection. A separate full-strength concentrate variant exists.
Best for owners of Toyota, Lexus, Scion, Hyundai, KIA, and Mitsubishi vehicles that specify a red Asian-style HOAT coolant · and for the limited set of Ford models that called for the WSS-M97B55-A red HOAT chemistry. The phosphate-HOAT package is widely treated as a workable AISIN ACT-002 cross-reference for North American Toyota applications. Skip this if your vehicle calls for a silicate-OAT formula (Ford / Chrysler G-05), a Dex-Cool OAT (GM platforms), a European Si-OAT (VW G12/G13, BMW), or a pink-coolant Asian formulation requiring a different inhibitor package · using the wrong inhibitor chemistry can cause corrosion or seal degradation.
SDS signal word is WARNING (not DANGER). The H302 classification (harmful if swallowed, Cat 4 acute oral toxicity) applies to ethylene glycol at the 40·50% concentration in the 50/50 prediluted mix · keep stored coolant secured from pets and children, who are attracted to the sweet taste of ethylene glycol. The H373 classification (STOT RE 2, kidney and liver) means prolonged or repeated swallowing · not single splash contact · can cause organ damage; it is a chronic-toxicity oral-route hazard, not a respiratory or skin one. SDS Section 8 carries an affirmative declaration that no respiratory protection is normally required, consistent with ethylene glycol's negligible vapor pressure at ambient temperature. The back-of-bottle label carries a California Proposition 65 warning for ethylene glycol (oral route). Aquatic toxicity is not classified at the mixture level in SDS Section 12 · ethylene glycol's component LC50 values (27,540 mg/l for bluegill at 96 hours) are far above the H4xx classification thresholds. Spent coolant must be collected for recycling · do not drain to the ground or storm sewer. AutoZone, O'Reilly, and Advance Auto Parts accept used coolant.
Per the product listing and back label, Zerex Asian Vehicle Red is formulated to replace the OEM fluid in Asian-make vehicles that call for a red, silicate-free, borate-free HOAT antifreeze · Toyota, Lexus, Scion, and others. The product also lists OEM specifications meeting Hyundai/KIA MS 591-08, Mitsubishi ES-64217, and Ford WSS-M97B55-A (the Ford spec used for a limited set of models that called for the red Asian-style HOAT). It also meets JIS K 2234-1994, ASTM D3306, ASTM D4985, and Federal Specification A-A-870A. Always verify against your vehicle's owner's manual before switching coolants · using the wrong coolant chemistry can cause corrosion.
Zerex Asian Vehicle Red is a phosphate-HOAT formulation that targets the same Toyota, Lexus, and Scion applications as Toyota SLLC and the AISIN ACT-002 cross-reference. Community discussion on BobIsTheOilGuy treats these as workable equivalents for most North American Toyota applications. They are not formally OEM-equivalent · Toyota SLLC and AISIN ACT-002 are the OEM-branded fluids, and Zerex Asian Red is a spec-meeting aftermarket alternative. For warranty-period vehicles where OEM fluid is specified, use the Toyota-branded coolant; for out-of-warranty applications, Zerex Asian Red is a widely accepted drop-in for the Asian-vehicle red HOAT category.
No · this is a 50/50 prediluted ready-to-use coolant. Pour directly into the cooling system per the manufacturer's fill instructions. The product as supplied contains roughly equal parts ethylene glycol and water, delivering protection to approximately −34°F. A separate full-strength concentrate variant of Zerex Asian Vehicle Red exists for buyers who want to mix their own dilution ratio for severe-climate use · but the 1-gallon bottle covered on this page is the pre-diluted product.
The SDS classifies this product as H302 (harmful if swallowed, Acute Toxicity Category 4) and H373 (may cause damage to organs · specifically kidney and liver · through prolonged or repeated exposure if swallowed). Ethylene glycol is the hazardous ingredient and is well-documented as being attractive to pets due to its sweet taste, and it remains acutely toxic to small animals and children even at small ingested volumes. The back-of-bottle label carries a California Proposition 65 warning for ethylene glycol. The SDS does not document the addition of a bittering agent (denatonium benzoate) the way some other Zerex variants do. Store secured from pets and children; spent coolant must be collected for recycling, not left in drip pans or puddles.
Per the product listing, this is a silicate-free, borate-free Hybrid Organic Acid Technology (HOAT) coolant with a phosphate additive · sometimes called P-HOAT, the standard chemistry used in Asian OEM coolants where European and American HOATs would use silicate as the secondary inhibitor. The label states a 5-year / 150,000-mile service interval. No independent used-coolant analysis (VOA) at the full claimed interval is publicly available · the interval is based on the inhibitor chemistry and is consistent with HOAT service-life expectations in the Asian-vehicle application.
Collect spent coolant in a sealed container · do not drain to the ground, storm sewer, or household drain. Ethylene glycol is attractive to animals due to its sweet taste and is harmful if ingested. Most auto parts stores (AutoZone, O'Reilly, Advance Auto Parts) accept used coolant for recycling at no charge. Check your local store's policy before arrival.
Marketing copy from Zerex, via Amazon. Not editorial.
Weekly pick
One product, one safety verdict, every week. No spam.
















Evans Cooling Systems
Evans High Performance Waterless Engine Coolant

PEAK
OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant

Havoline
Xtended Life Antifreeze/Coolant Pre-mix 50/50

Toyota
Genuine Super Long Life Coolant SLLC2 (Pink), 50/50 Pre-Diluted, 1 Gallon
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.