Gulf Western 15W40 Top Dog XDO Diesel Mineral Ci-4/SL

When it comes to looking after your diesel engine in Aotearoa’s ever-changing conditions, you need an engine oil that won’t pack a sad after a long haul or a hard day on the paddock. That’s where Gulf Western Top Dog XDO comes in. With a VISCOSITY – 15W-40 rating, this high-performance diesel mineral oil is built tough for New Zealand’s rugged climate, from chilly starts in the deep south to dusty workdays in the far north.

No dramas here, this oil’s got your back whether you’re towing the boat, carting the dogs, or running a fleet across the country. Designed for mixed fleets and heavy-duty machinery, its premium VISCOSITY – 15W-40 formula keeps your engine running smoother, longer. It meets a full lineup of global manufacturer approvals, including Mack Trucks, Volvo, and Cummins, so it’s sweet as for everything from the family ute to earthmoving gear.

Whether you're a tradie in Tauranga, a farmer in Feilding, or just someone who expects their 4WD to start first pop every morning, this oil delivers the reliability Kiwis count on. And thanks to its advanced formulation and 15W-40 viscosity, it provides exceptional protection without compromising on value, because we know looking after your gear shouldn't cost the earth.

• Premium 15W-40 Viscosity – Handles hard starts, high loads, and long hauls with ease, no matter the season.

• Built for Mixed Fleets – Ideal for road transport, farm vehicles, 4WDs, utes, and even late-model petrol engines.

• Tough as for Heavy Work – Perfect for everything from diesel diggers to daily drivers, no matter the job site.

• Globally Approved – Meets top-tier specs from Volvo, Mack, Renault, and Detroit Diesel, trusted by big players worldwide.

• All-Season Protection – Stable in heat, reliable in the cold, keeps your engine protected from Cape Reinga to Bluff.

• Zero-Nonsense Maintenance – Reduces wear and sludge, so you’re not stuck under the bonnet every other weekend.

From the job site to the back paddock, Top Dog XDO’s 15W-40 viscosity means it stays fluid when you need it and protective when it counts. It's rugged, dependable, and no-nonsense, just like the Kiwi blokes and blokesses using it. Whether you’re keeping the whānau wagon running sweet or servicing the tractor before calving season, this oil won’t let you down.

Technical Specifications

What’s in the Box

• 1x Gulf Western Top Dog XDO Diesel Engine Oil

• Size: Available in 5L, 10L, and 20L containers

• User-friendly pour spout for mess-free top-ups

• Manufacturer-approved performance backed by Aussie-made reliability