► Gulf Western | Commercial & Heavy Duty Oils

Power That Doesn’t Quit

Big engines demand more than standard oil. The Gulf Western Commercial & Heavy Duty Oils Collection is built for diesel trucks, earthmovers & agricultural machinery that never slow down. Each product protects high-output engines against soot, heat & pressure — keeping fleets efficient, compliant & ready for the next haul.

Trusted by transport operators, fleet mechanics & contractors from Somerville to the Mornington Peninsula, Gulf Western heavy-duty oils deliver proven reliability under real Australian conditions. Backed by Same Day Dispatch, trade pricing & the Industrial Shed Trade Guarantee, this range is ready for any workshop or field job.

For full maintenance coverage, pair your oil service kits with Engine Oil Circulation & Filtration systems, use Lubrication & Cleaning Gear for post-service cleanup & add Tool & Equipment Care to keep your workshop running smooth between jobs.

What’s in This Collection:

► Diesel Emission Kit
Professional service kit that cleans & maintains diesel exhaust & emission systems. Helps restore performance while reducing smoke & fuel consumption.

► Enviro Diesel Treatment (EDT) 5 L
Fuel treatment formulated for improved combustion efficiency & injector cleanliness. Reduces particulate emissions & extends fuel system life for fleet engines.

► Turbo Diesel LA SAE 15W-40 CG4/SJ 20 L
Premium mixed-fleet oil for diesel & petrol engines. Provides outstanding protection against sludge & oxidation with excellent shear stability under heavy load.

► Turbo Diesel LA SAE 15W-40 CG4/SJ 205 L
Bulk drum designed for high-volume workshops & fleet depots. Delivers long drain intervals & consistent lubrication for turbocharged & naturally aspirated diesel engines.

► Enviro Diesel Treatment (EDT) 325 ml
Compact retail bottle for ongoing fuel system care. Cleans injectors, prevents carbon deposits & improves combustion quality with every fill.

► Enviro Diesel Treatment (EDT) 20 L
Trade-size fuel additive for fleet & agricultural operations. Provides measurable fuel savings & cleaner emissions across large diesel systems.

► Diesel Induction System Cleaner Kit
Complete cleaner set for intake manifolds & EGR valves. Removes carbon build-up to restore airflow, power & throttle response without disassembly.

► Diesel Injector Cleaner – Retail
Precision cleaner that removes deposits from injectors & fuel rails. Improves spray pattern consistency, cold starting & overall efficiency in diesel engines.