AMSOIL Signature Series Ultra-Low Viscosity 100% Synthetic Automatic Transmission Fluid
Join the Preferred Customer program to save approximately 25% off the retail price today
Estimated delivery by or sooner
Purpose-Built for Ultra-Low Viscosity Transmissions
AMSOIL Signature Series ULV Synthetic ATF is engineered specifically for the latest generation of transmissions that require ultra-low viscosity fluid, including Ford 10-speed (10R80) and GM 10-speed transmissions. It delivers the precise frictional properties and film strength these advanced transmissions demand while providing Signature Series severe-service protection.
With a pour point of -62°C (-80°F) and Brookfield viscosity of just 4,050 cP at -40°C, it flows quickly in extreme cold to improve shift response and protect components during cold starts.
Key Benefits
- Purpose-built for Ford MERCON ULV and GM DEXRON ULV specifications
- Ultra-low viscosity reduces internal friction for improved fuel efficiency
- Exceptional cold-flow with pour point of -62°C (-80°F)
- Brookfield viscosity of just 4,050 cP at -40°C for rapid cold-weather flow
- Withstands heavy towing, elevated temperatures and challenging terrain
- Outstanding wear protection with 0.39 mm four-ball wear scar
- Formulated for latest-generation 8, 9, and 10-speed transmissions
- Signature Series severe-service protection and thermal stability
Next-Generation Transmission Protection
The latest multi-speed automatic transmissions (8, 9, and 10-speed) operate with tighter tolerances and require ultra-low viscosity fluids to reduce internal friction and maximize fuel efficiency. Signature Series ULV ATF is formulated with premium synthetic base stocks and advanced additive technology to meet these exacting requirements while providing the thermal stability and wear protection that AMSOIL Signature Series is known for.
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 4.5 |
| Kinematic Viscosity @ 40°C, cSt | 20.5 |
| Viscosity Index | 134 |
| Pour Point | -62°C (-80°F) |
| Flash Point | 220°C (428°F) |
| Four-Ball Wear Test (ASTM D4172 @ 40 kg, 75°C, 1200 rpm, 1hr), Scar, mm | 0.39 |
| Brookfield Viscosity @ -40°C, cP | 4,050 |
Industry Certifications & OEM Approvals
Ford
- MERCON ULV
GM
- DEXRON ULV
Ford MERCON ULV & GM DEXRON ULV Applications
Specifically formulated for transmissions requiring Ford MERCON ULV and GM DEXRON ULV specifications. These include the latest Ford and GM 10-speed automatic transmissions and other applications specifying ultra-low viscosity ATF.
Pros and Cons
Pros
- Purpose-built for Ford MERCON ULV and GM DEXRON ULV specifications
- Ultra-low viscosity reduces internal friction for improved fuel efficiency
- Exceptional cold-flow with pour point of -62°C (-80°F)
- Brookfield viscosity of just 4,050 cP at -40°C for rapid cold-weather flow
- Withstands heavy towing, elevated temperatures and challenging terrain
- Outstanding wear protection with 0.39 mm four-ball wear scar
- Formulated for latest-generation 8, 9, and 10-speed transmissions
- Signature Series severe-service protection and thermal stability
Cons
- Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
- Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.
Order Through Your Independent AMSOIL Dealer
Protect your vehicle's advanced transmission with purpose-built ULV fluid. As your Independent AMSOIL Dealer, we provide expert guidance and competitive pricing on all AMSOIL products.
Independent AMSOIL Dealer #30576570
Shipping & Returns
Fast, Reliable Shipping
- Free standard ground shipping on orders of $100 ($130 in Canada) or more.
- Orders under the threshold ship for a flat $9.99 ($12.99 in Canada) freight charge.
- In-stock items typically delivered in two to three business days.
- U.S. and Canada only — no shipments to PO Boxes.
30-Day Return Policy
- Return unopened, currently marketed products within 30 days for a full refund (minus freight).
- Exchange unopened products within 90 days with no restocking fee.
- Special-order items are non-returnable.
- Returns are handled directly by AMSOIL.
Frequently Asked Questions
ULV (Ultra-Low Viscosity) ATF is required by newer Ford and GM vehicles with advanced multi-speed transmissions, including the Ford 10R80 10-speed and GM 10L80/10L90 10-speed transmissions. Check your owner's manual for the correct fluid specification — if it calls for MERCON ULV or DEXRON ULV, this is the correct fluid.
No. ULV ATF is specifically formulated for transmissions designed for ultra-low viscosity fluid. Using it in a transmission that requires a higher-viscosity ATF (like DEXRON VI or MERCON LV) could result in inadequate film strength and protection. Use Signature Series Fuel-Efficient ATF for those applications.
ULV ATF is intentionally formulated at a much lower viscosity to reduce internal friction in advanced transmissions designed for thin fluids. The lower viscosity index reflects its ultra-low viscosity design, not a quality difference. It provides the same Signature Series level of thermal stability and wear protection within its intended application range.
Under normal service, follow your vehicle manufacturer's normal-service drain interval. Under severe service (towing, hauling, commercial use), you can double the manufacturer's severe-service interval in passenger cars and light trucks.
Customer Reviews
See all 933 reviewsSuperior ULV
2019 f150 5.0 10R80 transmission. Drain and fill with OEM replacement filter and filter seal. Replaced plastic factory pan with PPE standard depth pan. Collected all fluid that was drained including trans cooler. ( collected 9 quarts) Was able to replace approximately 9.75 quarts for proper fluid level @ 210 degrees F. Cleared transmission adaptive tables utilizing Autel tool. Performed drive cycle relearn procedure as close as I could. Have been driving truck in Tow haul mode in stop and go traffic and in Normal mode on highway. Unbelievable difference in transmission performance. Transmission operates better than new.
Independent AMSOIL Dealer #30576570. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.