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EV Battery Guide

Free fluid spec lookup

Fluid Capacity Lookup — Every Fluid Your Car Needs

Find coolant, transmission, brake, power steering and differential fluid capacities for 40+ popular cars.

40+ models 6 fluid types Spec included 100% free

Look Up Your Fluid Specs

Search or browse — pick your car.

—
FluidCapacity
Engine oil—
Coolant—
Transmission—
Brake fluid—
Power steering—
Differential—
Always verify against your owner’s manual — capacities vary by engine, transmission and model year. Values are for the most common configuration.

Why Fluid Capacities Matter

Buying fluids blind means overbuying (wasted money) or underbuying (a half-finished job). Knowing exact capacities also lets you spot leaks — if the coolant takes 2 quarts every month, something’s wrong.

Fluid Change Intervals

  • Coolant: 5 years / 100k miles (long-life). Never mix types.
  • Transmission: 60–100k miles (check manual — some claim “lifetime”).
  • Brake fluid: every 2–3 years — it absorbs moisture and lowers the boiling point.
  • Power steering: 50–75k miles or when dark/burnt smelling.
  • Differential: 30–60k miles, sooner if towing.

Fluid Spec Tips

  • Use the exact spec (ATF+4, Dexron VI, DOT 3/4) — “universal” fluids are compromises.
  • Coolant color means nothing — match the spec (OAT, HOAT), not the color.

Frequently Asked Questions

How much coolant does my car hold?

Most cars: 1.5–3 gallons. Trucks/SUVs: 3–5 gallons. Use the lookup above for your exact model.

Can I mix coolant types?

No — mixing OAT, HOAT and IAT coolants causes sludge and corrosion. Drain and fill with one spec.

How often should transmission fluid be changed?

60,000–100,000 miles for most automatics. Severe use (towing, city): 30,000–60,000. Check your manual.

What happens if brake fluid is old?

It absorbs water, lowering its boiling point — hard braking can boil it, causing sudden pedal-to-floor fade. Change every 2–3 years.

Do electric cars need these fluids?

EVs still need coolant (battery/thermal), brake fluid and washer fluid — but no engine oil, transmission fluid or power steering fluid (electric steering).

More Free Car Tools

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  • Home
  • EV Battery Blog
    • Solid-State Batteries
    • Battery Basics
    • Brand Specific Batteries
    • Chemistry
    • EV Charging
    • Lithium-Ion Batteries
  • EV Calculators
    • Home Charging Cost Calculator
    • EV Charging Time Calculator
    • EV vs Gas Cost Calculator
    • US EV Tax Credit Eligibility Checker
    • Best EV Finder Quiz
  • Car Calculators
  • EV News