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Automatic Transmission Fluid

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ATF Fluid Complete Full Synthetic Lubegard 32 OZ
$33.02 - $33.02
$33.02
$33.02 - $33.02
$33.02

ATF Fluid Complete Full Synthetic Lubegard 32 OZ

in stock

Lubegard COMPLETE Premium Full Synthetic ATF Experience the unparalleled performance of Lubegard's COMPLETE Full Synthetic ATF, enriched with the b...

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$33.02 - $33.02
$33.02
$33.02 - $33.02
$33.02
$32.84 - $32.84
$32.84
$32.84 - $32.84
$32.84

Lubegard CVT Universal Transmision Fluid 1 Qt Gal

in stock

LubeGard Complete™ CVT Fluid LUBEGARD® Complete™ CVT Fluid is formulated to meet and exceed OEM performance requirements, eliminating the need to s...

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$32.84 - $32.84
$32.84
$32.84 - $32.84
$32.84
Automatic Transmission Fluid Dual Clutch Lubegard
$74.91 - $74.91
$74.91
$74.91 - $74.91
$74.91

Automatic Transmission Fluid Dual Clutch Lubegard

in stock

LUBEGARD Multi-Vehicle Dual Clutch Transmission Fluid: The Ultimate DCT Protection LUBEGARD's Multi-Vehicle Dual Clutch Transmission Fluid offers u...

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$74.91 - $74.91
$74.91
$74.91 - $74.91
$74.91
Complete CVT Fluid Lubegard 1.25 Gallons
$150.56 - $150.56
$150.56
$150.56 - $150.56
$150.56

Complete CVT Fluid Lubegard 1.25 Gallons

in stock

LubeGard Complete™ CVT Fluid LUBEGARD® Complete™ CVT Fluid is formulated to meet and exceed OEM performance requirements, eliminating the need to s...

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$150.56 - $150.56
$150.56
$150.56 - $150.56
$150.56
PLATINUM® Automatic Transmission Fluid Protectant - Suntransmissions
$13.40 - $13.40
$13.40
$13.40 - $13.40
$13.40

PLATINUM Automatic Transmission Fluid Protectant

in stock

LUBEGARD® Platinum ATF Protectant: The Ultimate Transmission Fluid Enhancer LUBEGARD® Platinum Automatic Transmission Fluid Protectant stands out a...

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$13.40 - $13.40
$13.40
$13.40 - $13.40
$13.40
AUTOMATIC TRANSMISSION FLUID SUPPLEMENT MERCON V LUBEGARD - Suntransmissions
$11.64 - $11.64
$11.64
$11.64 - $11.64
$11.64

Automatic Transmission Fluid Supplement Mercon V LubeGard

in stock

LUBEGARD AUTOMATIC TRANSMISSION FLUID SUPPLEMENT MERCON V 62005OEM Number: 62005 DESCRIPTION LUBEGARD® Automatic Transmission Supplement for F...

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$11.64 - $11.64
$11.64
$11.64 - $11.64
$11.64
Automatic Transmission Fluid Protectant RED LubeGard 3 PACK - Suntransmissions
$26.88 - $26.88
$26.88
$26.88 - $26.88
$26.88

Automatic Transmission Fluid Protectant RED LubeGard 3 PACK

in stock

Enhance Your Transmission with LUBEGARD® Synthetic ATF Protectant Revitalize your transmission with LUBEGARD® Synthetic Automatic Transmission Flui...

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$26.88 - $26.88
$26.88
$26.88 - $26.88
$26.88
Power Steering Fluid Synthetic LubeGard
$29.98 - $29.98
$29.98
$29.98 - $29.98
$29.98

Power Steering Fluid Synthetic LubeGard

in stock

Advanced Synthetic Power Steering Fluid Experience the next level of power steering fluid performance with our specially formulated synthetic blend...

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$29.98 - $29.98
$29.98
$29.98 - $29.98
$29.98
Power Steering Fluid with LXE Technology 10 OZ
Sold Out
$2.66 - $2.66
$2.66
$2.66 - $2.66
$2.66

Power Steering Fluid with LXE Technology 10 OZ

Out of stock

Power Steering Fluid with LXE Technology 10 OZ Advanced LUBEGARD COMPLETE Power Steering Fluid LUBEGARD COMPLETE Power Steering Fluid is a speciali...

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$2.66 - $2.66
$2.66
$2.66 - $2.66
$2.66
Sold Out
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Automatic Transmission Fluid Protectant RED LubeGard - Suntransmissions
$9.81 - $9.81
$9.81
$9.81 - $9.81
$9.81

Lubegard Automatic Transmission Fluid Protectant Red 10 oz

in stock

LUBEGARD® Synthetic ATF Protectant: Elevate Your Transmission's Performance 10 oz LUBEGARD® Synthetic Automatic Transmission Fluid Protectant is a ...

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$9.81 - $9.81
$9.81
$9.81 - $9.81
$9.81
Automatic Transmission Fluid Protectant LubeGard BLACK - Suntransmissions
$10.77 - $10.77
$10.77
$10.77 - $10.77
$10.77

Automatic Transmission Fluid Protectant LubeGard BLACK

in stock

Description LUBEGARD® Highly Friction Modified (HFM) Automatic Transmission Supplement is a dual-purpose problem solver that corrects friction modi...

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$10.77 - $10.77
$10.77
$10.77 - $10.77
$10.77
$22.07 - $22.07
$22.07
$22.07 - $22.07
$22.07

Lubegard Automatic Transmission Fluid Protectant Red 32 oz

in stock

LUBEGARD® Synthetic ATF Protectant: Elevate Your Transmission's Performance 32 oz LUBEGARD® Synthetic Automatic Transmission Fluid Protectant is a ...

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$22.07 - $22.07
$22.07
$22.07 - $22.07
$22.07
$107.52 - $107.52
$107.52
$107.52 - $107.52
$107.52

Lubegard ATF Protectant Red 12 Pack

in stock

Lubegard ATF Protectant Red 12 Pack Contains12 x Lubegard ATF Protectant Red 10 FL OZTransmissions: 4L60E (M33,M30) 1993-UP, TH700 (4L60) 1982-UP ...

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$107.52 - $107.52
$107.52
$107.52 - $107.52
$107.52
$146.83 - $146.83
$146.83
$146.83 - $146.83
$146.83

Lubegard Platinum Automatic Transmission Fluid Protectant 12 Pack

in stock

Lubegard Platinum Automatic Transmission Fluid Protectant 12 Pack Contains12 x Lubegard Platinum Automatic Transmission Fluid Protectant 10 FL OZTr...

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$146.83 - $146.83
$146.83
$146.83 - $146.83
$146.83
$7.69 - $7.69
$7.69
$7.69 - $7.69
$7.69

LubeGard Gear Fluid Supplement for Manual Transmissions 8 FL OZ

in stock

LUBEGARD Gear Fluid Supplement – 8 FL OZ LUBEGARD® Gear Fluid Supplement is formulated to enhance the performance of all manual transmissions, tran...

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$7.69 - $7.69
$7.69
$7.69 - $7.69
$7.69
$15.98 - $15.98
$15.98
$15.98 - $15.98
$15.98

Power Steering Fluid With LXE Technology 32 OZ

in stock

Power Steering Fluid With LXE Technology 32 OZ Transmissions: TH350C (MX2)  Vehicle CHEVROLETCamaro, Chevelle 1968-1981 3 SP Caprice 1980-1984 3 S...

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$15.98 - $15.98
$15.98
$15.98 - $15.98
$15.98

Automatic Transmission Fluid (ATF): Function, Types, and Why It Matters

Automatic Transmission Fluid (ATF) is a critical component in the performance, reliability, and lifespan of any automatic transmission system. More than just a lubricant, ATF also functions as a hydraulic medium, coolant, and cleaning agent—directly influencing shift quality, temperature control, and internal wear.

Using the correct ATF—and replacing it at the right intervals—is essential to prevent premature transmission failure and costly repairs.

What Does Automatic Transmission Fluid Do?

Inside an automatic transmission, ATF performs several essential roles:

  • Lubricates gears, bearings, and high-friction components
  • Transfers hydraulic pressure to engage clutches and bands
  • Dissipates heat generated by the torque converter
  • Cleans valve bodies and maintains clear hydraulic passages
  • Protects internal components from oxidation and corrosion

When ATF degrades—due to heat, contamination, or delayed service—it may result in slipping, delayed engagement, hard shifts, overheating, or internal damage.

Types of Automatic Transmission Fluid

Each transmission is engineered to work with a specific ATF formulation. Using incorrect ATF—even if it seems compatible—can disrupt clutch engagement and hydraulic behavior, leading to poor performance or long-term damage.

When Should ATF Be Replaced?

Although some manufacturers promote ATF as “lifetime fluid,” real-world driving conditions often demand more frequent service, especially in cases of:

  • High-mileage vehicles
  • Towing or carrying heavy loads
  • Stop-and-go traffic or hot climate conditions
  • Symptoms like shudder, vibration, or inconsistent shifting

Preventive ATF service is one of the most effective ways to extend the life of your transmission and reduce the risk of breakdowns.

Shop Trusted ATF from Sun Transmissions

Whether you're addressing shifting issues or performing preventive maintenance, Sun Transmissions offers premium-quality automatic transmission fluids that meet OEM specifications for a wide range of vehicles.

Need help choosing the right ATF?
Contact our team for expert support and ensure your transmission runs smoothly—mile after mile.

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