When fleets are running hard, hauling big numbers and clocking serious kilometres between services, the last thing anyone needs is a weak link in the driveline.

Gulf Western Auto’s ULTRA DRIVE 90 steps squarely into that gap – a synthetic-fortified, ultra-high performance, friction-modified gear oil purpose-built for the most punishing conditions: high loads, high temperatures, and long hauls.

What sets ULTRA DRIVE 90 apart is its real-world pedigree. It’s been formulated and tested with roadtrain operators across Australia’s Northern Territory – about as tough a proving ground as you’ll find.

A standout feature is its versatile viscosity performance. ULTRA DRIVE 90 is suitable for use where both 80W-90 and 85W-140 grades are specified, making it a smart consolidation play for operators with mixed equipment. One oil that can confidently cover both ends of the traditional spectrum means simpler inventory, fewer changeover hassles, and less chance of the wrong bottle finding its way into the wrong housing.

Protection is the core brief for any gear oil, and ULTRA DRIVE 90 goes after it with high molecular strength to deliver exceptional film integrity. That robust oil film helps keep gear teeth separated and bearings cushioned under shock loads and continuous torque, reducing the risk of scuffing and pitting when the driveline is working hardest. Add in excellent thermal stability, and you have an oil that resists thinning, oxidation and varnish build-up when gearboxes and differentials are living at elevated temperatures day after day.

Water is another real-world contaminant that can spell trouble in remote operations. ULTRA DRIVE 90 is formulated not to gel when exposed to water, maintaining flow and protection so operators aren’t sidelined by a creek crossing, weather event or routine washdown gone wrong. For fleets chasing maximum uptime, that resilience matters.

Extended drain intervals are on the table, too – provided service practices and OEM guidance are followed – thanks to the oil’s stability and load-carrying performance. Stretching drains safely is one of the most effective levers a fleet has for cutting maintenance downtime and total cost of ownership, especially in long-haul operations where every hour off the road counts.

ULTRA DRIVE 90 is a modern answer to an old problem. It takes the heat, carries the load, and keeps protection in the bank over long runs – all while simplifying lubricant choice across a mixed fleet.

For more information and stockists visitwww.gulfwestern.co.nz