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Yellow concentrated antifreeze coolant in a one gallon bottle

PRESTONE

PRESTONE AF2000 Concentrated Antifreeze Coolant 1 gal

SKU CH-WZFV-MYSJB

Concentrated ethylene-glycol coolant protects engines to −34 °F freezing and 226 °F boiling for up to 10 years or 300,000 miles

  • ColorYellow
  • Protects engines for 10 years or 300,000 miles with OAT Cor-Guard formula
  • Ready-to-use concentrated ethylene glycol prevents freezing down to -34 °F and boiling up to 226 °F
  • Phosphate-free and silicate-free chemistry meets ASTM D3306 and D4985 standards
  • Biodegradable yellow coolant safe for all vehicle makes and models
  • One-gallon bottle supplies concentrated protection for complete cooling system service

Concentrated Antifreeze for All Vehicles

Prestone AF2000 is a concentrated ethylene-glycol coolant designed for universal use in gasoline and diesel engines. The yellow OAT formula meets ASTM D3306 and ASTM D4985 standards while remaining phosphate-free and silicate-free. It protects cooling systems from corrosion and scale buildup across a wide range of vehicle makes.

Mix with Water Before Adding to System

The one-gallon bottle of concentrate requires dilution with distilled water to achieve the proper freeze and boil protection. Once mixed to the correct ratio, the solution lowers the freezing point to -34 degrees F and raises the boiling point to 226 degrees F. This flexibility lets you tailor the concentration for specific climate demands.

Cor-Guard Technology Extends Service Life

The Cor-Guard inhibitor package delivers a service rating of 10 years or 300,000 miles when maintained properly. Its biodegradable, phosphate-free composition reduces environmental impact during disposal. The formula is engineered to protect aluminum, steel, copper, and plastic cooling-system components without silicate dropout.

Highlights

  • Protects engines for 10 years or 300,000 miles with OAT Cor-Guard formula
  • Ready-to-use concentrated ethylene glycol prevents freezing down to -34 °F and boiling up to 226 °F
  • Phosphate-free and silicate-free chemistry meets ASTM D3306 and D4985 standards
  • Biodegradable yellow coolant safe for all vehicle makes and models
  • One-gallon bottle supplies concentrated protection for complete cooling system service

Specifications

BrandPRESTONE
ColorYellow

Questions about this item

How long does the concentrate protect an engine before it needs changing?

The concentrate is rated for 10 yr or 300,000 mi of service life when mixed correctly.

What temperature extremes does the mixed coolant handle during all-day operation?

Mixed coolant resists freezing to -34 Degrees F and boiling to 226 Degrees F under sustained use.

Does the concentrate meet the ASTM standards my vehicle manual requires?

It meets ASTM D3306 and ASTM D4985 specifications for automotive engine coolant.

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