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Transmission Fluids

89 products indexed • Avg rating 4.78 • Avg price $76

This category covers manual and automatic transmission fluids, gear oils, and additives for passenger and light commercial vehicles, with options ranging from budget to premium. Prices average about (price varies) (range $34–$277) across 89 indexed products, and top brands include Valvoline and Triax

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Frequently Asked Questions

How do I choose the right transmission fluid for my vehicle?

Check your vehicle owner’s manual for the manufacturer-specified fluid type (e.g., ATF Dexron/Mercon, CVT fluid, dual-clutch fluid) and viscosity; if unspecified, use the OEM specification code and match it to product labels. Consider whether your vehicle requires synthetic, semi-synthetic, or mineral-based fluid and confirm compatibility with model year and transmission type

Can I switch brands or types of transmission fluid during a change?

You can usually switch brands if the new fluid meets the same OEM specification and fluid type, but avoid mixing different fluid classes (for example, don’t mix ATF and CVT fluids). When changing fluid types (conventional to synthetic), follow manufacturer guidance and perform a full fluid change or flush if recommended

How often should transmission fluid be changed or serviced?

Service intervals vary by vehicle and fluid type; common recommendations range from 30,000 to 100,000 miles for automatic transmissions, with many modern cars using extended-interval or 'lifetime' specifications. Follow the owner’s manual and monitor for symptoms (slipping, rough shifts, burning smell) that indicate earlier service

What are the benefits of synthetic transmission fluid versus conventional?

Synthetic fluids typically offer better thermal stability, oxidation resistance, and consistent viscosity over a wider temperature range, which can improve shift quality and protection under high load or temperature. Conventional fluids are generally less expensive but may require more frequent changes

How do I determine the right quantity to buy for a fluid change?

Use the vehicle’s service manual to find the transmission fluid capacity for a drain-and-fill or full flush; many passenger vehicles require between 4 and 12 quarts for a drain-and-fill and more for a complete fluid change. When in doubt, buy slightly more than the specified drain-and-fill amount, but avoid overfilling

Are there special fluids for CVT or dual-clutch transmissions?

Yes—continuously variable transmissions (CVT) and dual-clutch transmissions (DCT) require fluids formulated for their specific friction characteristics and component materials; always use a fluid labeled for CVT or DCT and matching the OEM specification

What should I look for on the fluid label to ensure quality and compatibility?

Look for OEM specification numbers, industry approvals (e.g., Dexron, Mercon, JASO), viscosity grade, and whether the fluid is synthetic or conventional; verified specs and clear application lists are the best indicators of compatibility