Summary
PEAK Conventional 50/50 Ready Use coolant data, from PEAK's own source. PEAK Conventional 50/50 Ready Use Antifreeze + Coolant is a 50/50 premix IAT ethylene glycol-based coolant listed by Old World Industries. The manufacturer lists 5 OEM or industry spec codes, including GM 1899M. Stated service life: 2 YEARS / 50,000 MILES.
Specifications
| Brand | PEAK |
|---|---|
| Maker | Old World Industries |
| Product | PEAK Conventional 50/50 Ready Use Antifreeze + Coolant |
| Part numbers (as published) | RUAB53 |
| Sizes (as published) | not published |
| Chemistry | IAT |
| Base glycol | Ethylene glycol |
| Colour | not published |
| Premix or concentrate | Premix 50/50 |
| OEM / industry specs listed | GM 1899M, GM 1825M, MS-7170, TMC RP-302C, SAE J814 |
| ASTM standards listed | ASTM D3306, ASTM D4985 |
| Service life claim | 2 YEARS / 50,000 MILES |
| Freeze point (as published) | not published |
| Free-of claims | not published |
| Datasheet | datasheet |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets GM 1899M per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (GM)
- Meets GM 1825M per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (GM)
- Meets MS-7170 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (Chrysler / FCA / Stellantis)
- Meets TMC RP-302C per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (TMC (heavy-duty truck))
- Meets SAE J814 per Antifreeze is glycol plus inhibitors. Choose it by your vehicle's specification. (SAE)
- Meets ASTM D3306 per PEAK (industry test standard)
- Meets ASTM D4985 per PEAK (industry test standard)
Manufacturer wording: Meets or exceeds ASTM D3306 and D4985 specifications
"Meets X per manufacturer" is our shorthand for any of the manufacturer's own phrases: meets, meets or exceeds, approved, or recommended for applications requiring. It is the manufacturer's claim, not an approval by Coolant.com or by the vehicle maker. Codes are copied as published. Some sources list codes for compatibility rather than formal approval. The wording above shows which.
What the manufacturer says it is for
PEAK® 50/50 Antifreeze + Coolant is a conventional (green), ethylene glycol based antifreeze for use in older automotive and light duty gasoline/diesel applications.
Quoted from the manufacturer's page. Coolant.com has not verified fitment for any vehicle, and a listed make or year range is the manufacturer's statement, not ours.
Compatibility notes
- If your owner's manual calls for GM 1899M, PEAK lists that code for this product. Read the exact wording above, and confirm against your manual.
- Chemistry is listed as IAT. Mixing different chemistries can shorten coolant life. See OAT vs HOAT vs IAT and use the mixing checker before topping up.
- Sold premixed: pour as supplied. Do not add water unless the label says to.
Where to buy
We did not find a retailer link on the manufacturer's page that we could check. Try the manufacturer's own site: PEAK product page.
Compare this coolant side by side
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See all PEAK coolants, coolants by brand or coolant by car make.
Browse the full coolant directory, or use Find my car coolant to match the spec in your owner's manual.
Sources
- PEAK product page (status on 22 Oct 2026: 200)
- PEAK datasheet / spec sheet