TOP DOG XDO is a heavy duty high performance, OEM approved diesel engine oil meeting the latest in lubrication technology formulated for Australia_s harsh environment meeting OEM requirements from Mack, Volvo, Detroit and Cummins. It provides superior protection against engine wear and sludge build up ensuring a cleaner engine. TOP DOG XDO offers extended drain intervals, reduced oil consumption and excellent low temperature viscometrics for reduced wear on start up. TOP DOG XDO is recommended for US, European and Japanese four stroke heavy duty diesel engines including the latest generation of highly tuned emission controlled engines including those with exhaust gas recirculation systems and SCR treatment systems. TOP DOG XDO is suitable where extended drain intervals are required (supported by routine oil analysis) and for equipment operating under the most extreme conditions. TOP DOG XDO is also suitable for stationary engines, petrol engines and 4WD_s making it an ideal mixed fleet oil. It is suitable for use as a hydraulic oil where a 15W-40 is called for and as a transmission oil where the Allison C3/C4 specification is required. TOP DOG XDO is not recommended for engines fitted with diesel particulate filters.
TOP DOG XDO is a heavy duty high performance, OEM approved diesel engine oil meeting the latest in lubrication technology formulated for Australia_s harsh environment meeting OEM requirements from Mack, Volvo, Detroit and Cummins. It provides superior protection against engine wear and sludge build up ensuring a cleaner engine. TOP DOG XDO offers extended drain intervals, reduced oil consumption and excellent low temperature viscometrics for reduced wear on start up. TOP DOG XDO is recommended for US, European and Japanese four stroke heavy duty diesel engines including the latest generation of highly tuned emission controlled engines including those with exhaust gas recirculation systems and SCR treatment systems. TOP DOG XDO is suitable where extended drain intervals are required (supported by routine oil analysis) and for equipment operating under the most extreme conditions. TOP DOG XDO is also suitable for stationary engines, petrol engines and 4WD_s making it an ideal mixed fleet oil. It is suitable for use as a hydraulic oil where a 15W-40 is called for and as a transmission oil where the Allison C3/C4 specification is required. TOP DOG XDO is not recommended for engines fitted with diesel particulate filters.
There are no live offers for Gulf Western Top Dog XDO 15W-40 Engine Oil 10L - 31012 right now. The all-time low we recorded was $32.94 on 25 Nov 2025. Set a price alert to hear when it's back in stock.
Prices last updated 5 Sept 2026.
Gulf Western Top Dog XDO 15W-40 Engine Oil 10L - 31012
TOP DOG XDO is a heavy duty high performance, OEM approved diesel engine oil meeting the latest in lubrication technology formulated for Australia_s harsh environment meeting OEM requirements from Mack, Volvo, Detroit and Cummins. It provides superior protection against engine wear and sludge build up ensuring a cleaner engine. TOP DOG XDO offers extended drain intervals, reduced oil consumption and excellent low temperature viscometrics for reduced wear on start up. TOP DOG XDO is recommended for US, European and Japanese four stroke heavy duty diesel engines including the latest generation of highly tuned emission controlled engines including those with exhaust gas recirculation systems and SCR treatment systems. TOP DOG XDO is suitable where extended drain intervals are required (supported by routine oil analysis) and for equipment operating under the most extreme conditions. TOP DOG XDO is also suitable for stationary engines, petrol engines and 4WD_s making it an ideal mixed fleet oil. It is suitable for use as a hydraulic oil where a 15W-40 is called for and as a transmission oil where the Allison C3/C4 specification is required. TOP DOG XDO is not recommended for engines fitted with diesel particulate filters.
TOP DOG XDO is a heavy duty high performance, OEM approved diesel engine oil meeting the latest in lubrication technology formulated for Australia_s harsh environment meeting OEM requirements from Mack, Volvo, Detroit and Cummins. It provides superior protection against engine wear and sludge build up ensuring a cleaner engine. TOP DOG XDO offers extended drain intervals, reduced oil consumption and excellent low temperature viscometrics for reduced wear on start up. TOP DOG XDO is recommended for US, European and Japanese four stroke heavy duty diesel engines including the latest generation of highly tuned emission controlled engines including those with exhaust gas recirculation systems and SCR treatment systems. TOP DOG XDO is suitable where extended drain intervals are required (supported by routine oil analysis) and for equipment operating under the most extreme conditions. TOP DOG XDO is also suitable for stationary engines, petrol engines and 4WD_s making it an ideal mixed fleet oil. It is suitable for use as a hydraulic oil where a 15W-40 is called for and as a transmission oil where the Allison C3/C4 specification is required. TOP DOG XDO is not recommended for engines fitted with diesel particulate filters.
Last updated at 09/05/2026 16:32:56
Gulf Western Top Dog XDO SAE 15w-40 Oil 5 Litre
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Gulf Western 30512 Top Dog XDO 15W-40 5L fits Ford F-250 7.3 D V8 J AWD Diesel Ute 10/96-11/03 154kw
Delivery between 7–17 Sept $10.95
Oil Gulf Western TOP DOG XDO SAE15W40 CI4/SL 5L 30512
Delivery between 11–18 Sept $23.25
Xdo Sae 15W/40 5 Litre 30512 - Gulf Western Oil | Universal Auto Spares
Delivery $14.95
Gulf Western Top Dog XDO 15W-40 Diesel Engine Oil 5L (30512)
Delivery by Wed $8.80
Top Dog XDO, SAE 15w40 To Fit Gulf Western – New (Aftermarket)
Delivery $25
TOP DOG XDO 15W-40 Diesel Engine Oil
Delivery between 10–18 Sept $15
GWO TOP DOG XDO SAE 15W-40 CI4/SL 5L
Delivery between Sun – Thu $55
Gulf Western Top Dog Xdo 15W-40 5L | 30512
Delivery $15
Top Dog XDO SAE 15W-40 5L | 30512 | Gulf Western | Engine Oil
Delivery between 10–18 Sept $20
originally posted on autobarn.com.au
Perfect choice for ageing diesel engine and Australian owned an operated. I have been using this brand for a few years now and never been disappointed !Economically priced and a full range of products to suit all vehicle user from Motorcycle's to Road Trains
originally posted on supercheapauto.com.au
I purchased a motor home fourteen years ago being a diesel with a 3.8 litre turbo rear mount motor with 82 thousand kilometers on the clock. I continued to use the oil recommended on the service sticker but found that the motor was using approximately one litre of oil every thousand kilometers. After some research I changed the brand to Gulf Western Top Dog XDO engine oil. I change the engine oil and filter on all of my three vehicles every five thousand kilometers. Since changing to Gulf Western I have driven twenty five thousand kilometers without using any oil between oil changes. In my opinion this is a testimony that the Gulf Western Top Dog XDO oil is a quality product.
originally posted on supercheapauto.com.au
I have been using Great Western oils for about 5 years now. Use their Top Dog diesel oil in my 200 series which is changed ar 5000km intervals but have gone to 10000km when travelling and not able to get the oil or have somewhere to do my service. Maintains pressure under heavy loads and higher temps. I tow a 3tonne van so my engine is always working pretty hard.Also use Great Western synthetic oil in two road motorcycles, a Goldwing 1800 and a Cagiva Raptor 1000. Again, can't fault this oil.From my perspective, Gulf Western Oils are excellent value for money and it is made in Australia. Can't get much beeter than that.
| Oil Composition | Mineral |
| API | CI-4 Plus, CH-4/SL |
Gulf Western Top Dog XDO SAE 15w-40 Oil 5 Litre
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Gulf Western 30512 Top Dog XDO 15W-40 5L fits Ford F-250 7.3 D V8 J AWD Diesel Ute 10/96-11/03 154kw
Delivery between 7–17 Sept $10.95
Oil Gulf Western TOP DOG XDO SAE15W40 CI4/SL 5L 30512
Delivery between 11–18 Sept $23.25
Xdo Sae 15W/40 5 Litre 30512 - Gulf Western Oil | Universal Auto Spares
Delivery $14.95
Gulf Western Top Dog XDO 15W-40 Diesel Engine Oil 5L (30512)
Delivery by Wed $8.80
Perfect choice for ageing diesel engine and Australian owned an operated. I have been using this brand for a few years now and never been disappointed !Economically priced and a full range of products to suit all vehicle user from Motorcycle's to Road Trains
I purchased a motor home fourteen years ago being a diesel with a 3.8 litre turbo rear mount motor with 82 thousand kilometers on the clock. I continued to use the oil recommended on the service sticker but found that the motor was using approximately one litre of oil every thousand kilometers. After some research I changed the brand to Gulf Western Top Dog XDO engine oil. I change the engine oil and filter on all of my three vehicles every five thousand kilometers. Since changing to Gulf Western I have driven twenty five thousand kilometers without using any oil between oil changes. In my opinion this is a testimony that the Gulf Western Top Dog XDO oil is a quality product.
I have been using Great Western oils for about 5 years now. Use their Top Dog diesel oil in my 200 series which is changed ar 5000km intervals but have gone to 10000km when travelling and not able to get the oil or have somewhere to do my service. Maintains pressure under heavy loads and higher temps. I tow a 3tonne van so my engine is always working pretty hard.Also use Great Western synthetic oil in two road motorcycles, a Goldwing 1800 and a Cagiva Raptor 1000. Again, can't fault this oil.From my perspective, Gulf Western Oils are excellent value for money and it is made in Australia. Can't get much beeter than that.
Having been using this in my 100 series cruiser for a couple of years (since I found out it's what my local mechanic was using). Always had great results, oil is always still in good condition at the end of the service period. One of the best value oils on the market in my opinion. Meets all the specs of much more expensive oils, at a better price.
For the price this is a good Australian Made Oil.It is recognized as being an official factory fill lubricant for some big names in the trucking industry world wide.This was enough for me to purchase and use it in my F250 7.3 lt Diesel.I was always a Castrol Oil Person, but after BP bought Castrol out, it seemed the price of their olis started to rise.So I started to look around for a equivalent or better engine oils.I'm also using a high temp Gulf Western Syn Oil in my tricked-up automatic gearbox as I tow a 3.6 tonne purpose built 20 foot off road caravan to remote parts of Australia.If your not sure which Gulf Western Oil is right for your vehicle, give the Tech Guys a ring just like I did...
Been using this oil in my 2016 ISUZU D'MAX and MOTORCYCLES - ( WET CLUTCH ) for years . 4X4 and Motorcycles run great . Motorcycles run smooth , no clutch slip , smooth gear changes , i always change my bike oil every 5000 klms 12 - months , and it still seems fine . Used it in a YAMAHA XJR1300, YAMAHA XVS V-STAR 650 , SUZUKI VSTROM 650 , BMW K75 - ( NO WET CLUTCH IN BMW ) , all bikes run great , super smooth gear changes in wet clutch bikes , no clutch slip.I refuse to be ripped off by buying SO CALLED PROPER MOTORCYCLE OIL , when there are many alternatives at a 1/4 of the price . Stock up and purchase from Number 1 - SUPERCHEAP AUTO when on sale .
The sign of a good engine oil is when it keeps performing under tough conditions. I was running Top Dog XDO 15W-40 for a full year and 2000km in my 4.0L turbo diesel. Lots of short trips which means the chance of engine wear is higher and the oil is working harder. I sent an oil test sample off for analysis at the next service interval. The results showed the bad news that a leaking fuel pump had caused a massive fuel dilution of over 10% and the oil viscosity had been reduced to 8.9 cST at 100C (down from 15.7 cST when new). It was an existing mechanical issue that I didn't know about until now. Surprisingly though, the wear metals were all at rock-bottom levels below 5ppm across the board. That means hardly any engine wear at all which is super impressive under ... MoreThe sign of a good engine oil is when it keeps performing under tough conditions. I was running Top Dog XDO 15W-40 for a full year and 2000km in my 4.0L turbo diesel. Lots of short trips which means the chance of engine wear is higher and the oil is working harder. I sent an oil test sample off for analysis at the next service interval. The results showed the bad news that a leaking fuel pump had caused a massive fuel dilution of over 10% and the oil viscosity had been reduced to 8.9 cST at 100C (down from 15.7 cST when new). It was an existing mechanical issue that I didn't know about until now. Surprisingly though, the wear metals were all at rock-bottom levels below 5ppm across the board. That means hardly any engine wear at all which is super impressive under these conditions. For those curious, the additive readings of my used oil were Phosphorus = 698ppm, Calcium = 2660ppm and Zinc = 843ppm. Considering that Top Dog XDO is also one of the more affordable turbo diesel engine oils available, there's plenty of concrete reasons why I can highly recommend this oil. Gulf Western Oil is a fair dinkum Australian brand and they made a top notch product.
A very good oil which I use every 7500km for my Hilux servicing. It can be hard to find at a decent price and I usually shop around to see when it is on special. I found it here at Autobarn on special so bought 2 drums at what seemed like a good price, only to go instore 10 days later and find that they had it again on special at $10 per drum less than what I paid on the online special. They sales person said as the transaction had already gone through they couldnt give me a refund to buy the other cheaper oil. The oil is a 5 star oil, but have given less for Autobarns misleading "sale' prices
I first purchased this oil quite some time ago when it first hit the shelves. I have a Nissan Navara D40 Diesel that had the manufacturers recommendation to use synthetic oil. The synthetic oil tended to get tired around the 12000 km mark. I am a great believer in using mineral oil in diesel machinery to increase reliability and less engine noise. This oil, as expected performed brilliantly and at 20000 km's on each service, the oil still had some decent viscocity left in it. The engine performs better and has a lot less noise than when using synthetic oils. I now also use it in my Mustang Skid Steer loader and it performs brilliantly. I love it and will continue to use it
Fantastic oil - works a treat in my 2.8 Hilux. Good size pack and good value. Definitely buy a funnel but as they are hard to pour from the 10litre tub.
| Oil Composition | Mineral |
| API | CI-4 Plus, CH-4/SL |
