Castrol GTX 15W-40 Diesel Engine Oil 5 L
Castrol GTX is one of the world s most trusted engine oils. It s more than just oil. It s liquid engineering that provides extra protection against diesel engine problems like soot and harsh deposits that your engine faces every day. Why is this important? Because soot and harsh deposits can make your oil thicker block oil ways cause wear and decrease performance. Castrol GTX Diesel 15W-40 is part-synthetic engine oil suitable for use in automotive petrol LPG CNG and diesel (excl. DPF) vehicles where the manufacturer recommends an ACEA A3/B4 API SP or earlier specification 15W-40 lubricant. Help extend the life of your engine with Castrol GTX DIESEL.
Castrol GTX is one of the world s most trusted engine oils. It s more than just oil. It s liquid engineering that provides extra protection against diesel engine problems like soot and harsh deposits that your engine faces every day. Why is this important? Because soot and harsh deposits can make your oil thicker block oil ways cause wear and decrease performance. Castrol GTX Diesel 15W-40 is part-synthetic engine oil suitable for use in automotive petrol LPG CNG and diesel (excl. DPF) vehicles where the manufacturer recommends an ACEA A3/B4 API SP or earlier specification 15W-40 lubricant. Help extend the life of your engine with Castrol GTX DIESEL.
Castrol GTX is one of the world s most trusted engine oils. It s more than just oil. It s liquid engineering that provides extra protection against diesel engine problems like soot and harsh deposits that your engine faces every day. Why is this important? Because soot and harsh deposits can make your oil thicker block oil ways cause wear and decrease performance. Castrol GTX Diesel 15W-40 is part-synthetic engine oil suitable for use in automotive petrol LPG CNG and diesel (excl. DPF) vehicles where the manufacturer recommends an ACEA A3/B4 API SP or earlier specification 15W-40 lubricant. Help extend the life of your engine with Castrol GTX DIESEL.
Castrol GTX is one of the world s most trusted engine oils. It s more than just oil. It s liquid engineering that provides extra protection against diesel engine problems like soot and harsh deposits that your engine faces every day. Why is this important? Because soot and harsh deposits can make your oil thicker block oil ways cause wear and decrease performance. Castrol GTX Diesel 15W-40 is part-synthetic engine oil suitable for use in automotive petrol LPG CNG and diesel (excl. DPF) vehicles where the manufacturer recommends an ACEA A3/B4 API SP or earlier specification 15W-40 lubricant. Help extend the life of your engine with Castrol GTX DIESEL.
in 11 offers
The lowest price for Castrol GTX 15W-40 Diesel Engine Oil 5 L right now is $34.96 at Auto One Australia, compared across 10 retailers.
The all-time low was $14.20 on 30 Oct 2026 — today's price is 146% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 Nov 2026.
Last updated at 03/11/2026 05:01:49
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originally posted on repco.co.nz
15W-40 is the recommended specification for my diesel engine. API CH-4 (and above) is what i need. Can't go wrong with Castrol, a proven high quality and in-spec product.I purchase the bulk of my engine-oils from Repco (whilst on special and/or catalogue deals), Repco offer good price's along with great service in-store and/or online.
originally posted on supercheapauto.com.au
The oil at this stage appears to be doing it job, but time will tell . but generally Castrol oils are of good quality and was recommended by the staff member, who I feel can be trusted.
originally posted on repco.co.nz
Castrol GTX Diesel has a higher amount of ZDDP(which prevents engine wear) compared to most other diesel oils, which is a good thing. Just don't use it if your vehicle has a DPF
| Form Configuration | Oil |
| Form | Liquid |
| Material | Mineral |
| Viscosity | 15W-40 |
| Operating Temperature | 202°C (flash point) |
Castrol Mineral GTX Diesel Engine Oil 15W40 5L Superior Cleaning Power
Free delivery
GTX DIESEL 15W-40 5L
Free delivery by 13 Nov
Castrol GTX Diesel 15W40 Engine Oil 5L - 3383440
Delivery $9
Castrol GTX Diesel 15W-40 Engine Oil 5L 3437069 fits Mazda E-Series 2.5 TD (SGL5 SGLR) WL-T AWD Diesel Bus 09/99-10/01 92kw
Delivery between 4–16 Nov $10.95
Castrol GTX 15W-40 Diesel Engine Oil 5L
15W-40 is the recommended specification for my diesel engine. API CH-4 (and above) is what i need. Can't go wrong with Castrol, a proven high quality and in-spec product.I purchase the bulk of my engine-oils from Repco (whilst on special and/or catalogue deals), Repco offer good price's along with great service in-store and/or online.
The oil at this stage appears to be doing it job, but time will tell . but generally Castrol oils are of good quality and was recommended by the staff member, who I feel can be trusted.
Castrol GTX Diesel has a higher amount of ZDDP(which prevents engine wear) compared to most other diesel oils, which is a good thing. Just don't use it if your vehicle has a DPF
Castrol oil has always been No.1 for performance. During my many years of motorcycle racing both road and enduro I've always depended on Castrol for both four stroke and two stroke machines. It goes without saying that I use it for my diesel 4 wheel drive and petrol cars without a problem. Sure its a bit more expensive than other brands but its a price I gladly pay for superior performance and peace of mind.
To have in stock and carry the 1 litre size is good. An issue was that it was located on the bottom shelf and difficult to find being a smaller container surrounded by larger containers it really should be at better height and viewing line.
| Form Configuration | Oil |
| Form | Liquid |
| Material | Mineral |
| Viscosity | 15W-40 |
| Operating Temperature | 202°C (flash point) |
