TOP DOG HDZ-50 20W-50 is a premium mineral diesel engine oil using high performing API and OEM approved additive technology suitable for American, European and Japanese diesel engines. This high viscosity formulation offers lower oil consumption and higher levels of wear protection for engines operating in the most severe applications or those with high mileage. It can be used in a range of applications from stationary engines, heavy duty diesel engines including those used in earth moving and road transport applications as well as some petrol engine applications requiring API SL or earlier performance levels.
TOP DOG HDZ-50 20W-50 is a premium mineral diesel engine oil using high performing API and OEM approved additive technology suitable for American, European and Japanese diesel engines. This high viscosity formulation offers lower oil consumption and higher levels of wear protection for engines operating in the most severe applications or those with high mileage. It can be used in a range of applications from stationary engines, heavy duty diesel engines including those used in earth moving and road transport applications as well as some petrol engine applications requiring API SL or earlier performance levels.
in 12 offers
last seen 17 Oct 2026
The lowest price we last saw for Gulf Western Top Dog HDZ Diesel Engine Oil - 20W-50 20 Litre was $147.00 at redpoint.com.au, compared across 9 retailers (last seen 17 Oct 2026). Prices may have changed since.
The all-time low we recorded was $91.79 on 28 Nov 2025.
Prices last updated 17 Oct 2026.
Gulf Western Top Dog HDZ Diesel Engine Oil - 20W-50 20 Litre
TOP DOG HDZ-50 20W-50 is a premium mineral diesel engine oil using high performing API and OEM approved additive technology suitable for American, European and Japanese diesel engines. This high viscosity formulation offers lower oil consumption and higher levels of wear protection for engines operating in the most severe applications or those with high mileage. It can be used in a range of applications from stationary engines, heavy duty diesel engines including those used in earth moving and road transport applications as well as some petrol engine applications requiring API SL or earlier performance levels.
TOP DOG HDZ-50 20W-50 is a premium mineral diesel engine oil using high performing API and OEM approved additive technology suitable for American, European and Japanese diesel engines. This high viscosity formulation offers lower oil consumption and higher levels of wear protection for engines operating in the most severe applications or those with high mileage. It can be used in a range of applications from stationary engines, heavy duty diesel engines including those used in earth moving and road transport applications as well as some petrol engine applications requiring API SL or earlier performance levels.
Last updated at 17/10/2026 11:18:29
Top Dog HDZ-50 20W-50 20L | 320346 | Gulf Western | Engine Oil
Delivery between 22–30 Oct $20
Gulf Western Top Dog HDZ-50 20W-50 CI-4 20L
Delivery between 24–28 Oct $8.80
Gulf Western Top Dog HDZ Diesel Engine Oil - 20W-50 20 Litre
Delivery between Tue – Fri $20
Top Dog HDZ-50, 20W-50 To Fit Gulf Western – New (Aftermarket)
Delivery $25
1 x GULF WESTERN Top Dog HDZ 50 Engine Oil CI-4/SL 20L 320346
Delivery between Wed – Fri $120
1 x Gulf Western Top Dog HDZ-50 20W-50 CI-4 Mineral Diesel Engine Oil 20L
Free delivery between 22–30 Oct
Gulf Western Top Dog HDZ-50 20W-50 CI-4 (20L)
Delivery between 19–26 Oct $22
Gulf Western Top Dog HDZ-50 20L
Delivery between 19–26 Oct $64.81
Gulf Western Top Dog HDZ-50 20W-50 CI-4 Diesel Engine Oil 20L | 320346 | 20W-50
Free delivery
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| Viscosity | 20W-50 |
| Form Configuration | Oil |
| Form | Liquid |
| Material | Mineral |
| Intended Use | Lubrication |
Top Dog HDZ-50 20W-50 20L | 320346 | Gulf Western | Engine Oil
Delivery between 22–30 Oct $20
Gulf Western Top Dog HDZ-50 20W-50 CI-4 20L
Delivery between 24–28 Oct $8.80
Gulf Western Top Dog HDZ Diesel Engine Oil - 20W-50 20 Litre
Delivery between Tue – Fri $20
Top Dog HDZ-50, 20W-50 To Fit Gulf Western – New (Aftermarket)
Delivery $25
1 x GULF WESTERN Top Dog HDZ 50 Engine Oil CI-4/SL 20L 320346
Delivery between Wed – Fri $120
| Viscosity | 20W-50 |
| Form Configuration | Oil |
| Form | Liquid |
| Material | Mineral |
| Intended Use | Lubrication |
