The quality of transmission fluid is critical when operating heavy vehicles, especially in extreme driving conditions such as heavy loads, steep terrain, continuous operation and frequent starts and stops.

Whether on the field, road or site, a vehicle’s drivetrain must withstand heat and friction to avoid premature wear and failure. Heavy vehicles such as trucks benefit from the protection of high-performance transmission fluids.

Transmission fluid cools and lubricates, ensuring the smooth performance of the vehicle. It also helps transport operators keep their fleet running while avoiding costly downtime and repairs.

Gulf Western’s SYN-TS HD is a technically advanced, next-generation fluid for on-highway Allison transmissions, offering enhanced protection and extended drain intervals.

SYN-TS HD is a fully synthetic formulation with long service life and transmission reliability, as well as anti-wear performance beyond the reference fluid. It has excellent clutch friction durability, ensuring consistent shifts across all operating conditions, and superb thermal and oxidative stability, offering enhanced transmission cleanliness and reliability.

Approved against the latest Allison TES 668 specification and backwards-compatible with earlier on-highway transmission fluids, including Allison TES 295, Gulf Western’s SYN-TS HD offers extended drain capabilities while maintaining enhanced equipment reliability, offering enhanced protection and extended drain intervals of up to 240,000km.

Founded in 1915, Allison is the largest global manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles, including on-highway trucks and buses. Gulf Western specifically designed SYN-TS HD for Allison Transmissions, and the oil was formally approved for TES 668 specification. It is also backed by an Allison factory warranty.

Allison transmissions’ key focus areas include on-highway trucks (distribution, refuse, construction, fire and emergency), buses (school, transit and coach) and motorhomes, and Gulf Western’s SYN-TS HD has been approved for use in these applications.

Benefits

• One of only 33 Allison TES-668 approved products globally and backed by a full Allison warranty, as well as a Gulf Western Oils warranty.
• Much longer drain interval. Severe application, Syn-TS 60k, Syn-TS HD 240k.
• Much more shear and stable formulation. Syn-TS HD maintains its viscosity/film thickness much better throughout the drain interval, offering maximum protection.
• Anti-shudder performance and durability are more than 10 times better than the reference oil, which outperforms Syn-TS-style multi-vehicle ATFs.
• Backwards-compatible with formal TES 295-approved products (eg, Castrol Transynd).

For more information on SYN-TS HD and the Gulf Western Oils range, contact your local NAPA Auto Parts rep or call 0800 800 073.