Castrol 15W-40 engine oils
Castrol 15W-40 engine oils
in 3 offers
The lowest price for Castrol Magnatec Diesel 15W-40 Engine Oil 5L - 3437335 right now is $70.16 at sparesbox.com.au, compared across 3 retailers.
The all-time low was $44.99 on 19 Nov 2025 — today's price is 56% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 2 July 2026.
Castrol Magnatec Diesel 15W-40 Engine Oil 5L - 3437335
Castrol 15W-40 engine oils
Castrol 15W-40 engine oils
Last updated at 02/07/2026 04:45:26
Castrol MAGNATEC Diesel 15W-40 Engine Oil 5L 3437335 fits MAHINDRA CJ 3 2.1 D All-wheel Drive, 2.1 D
Delivery between 7–15 July $9.90
Castrol Magnatec Diesel 15W-40 Semi Synthetic Engine Oil 5L, 3437335
Delivery between 8–10 July $15
Castrol MAGNATEC Diesel Engine Oil, 15W-40, 5 Litres
30-day returns
originally posted on supercheapauto.com.au
I have my 1999 model Subaru Forester serviced regularly by my trusted mechanic but always supply this oil as it always seems to run much more quiet on start up compared to other oils. It was also recommended to me by a long time friend and mechanic in another state as being the most suitable for my car. I have used it since I bought the car new. I still own the car because its still 100% reliable and in perfect running order. I always wait until its on special and grab 1 or 2 bottles from Supercheap Auto and hold them until needed rather than paying full price. I always order online as I am disabled and cannot always get to the store during the sale period and then either collect them myself or have someone do it for me. Its a good reliable product and the online ... MoreI have my 1999 model Subaru Forester serviced regularly by my trusted mechanic but always supply this oil as it always seems to run much more quiet on start up compared to other oils. It was also recommended to me by a long time friend and mechanic in another state as being the most suitable for my car. I have used it since I bought the car new. I still own the car because its still 100% reliable and in perfect running order. I always wait until its on special and grab 1 or 2 bottles from Supercheap Auto and hold them until needed rather than paying full price. I always order online as I am disabled and cannot always get to the store during the sale period and then either collect them myself or have someone do it for me. Its a good reliable product and the online purchase and click and collect is my favourite mode of buying from Supercheap. Its a win win for both of us!
originally posted on supercheapauto.com.au
Castrol MAGNATEC Engine Oil -10W-40, 5 Litre is a Quality and consistent product that I can always rely on to keep my car running efficiently at all times.My only significant concern is there is no tangible record in my account and or on my paper purchase receipt stating that my competition entry has been successful. This issue also occurs regarding my emailed receipt which if in place would give entrants peace of mind.
originally posted on supercheapauto.com.au
Bought this for my new Tool Pro pressure washer and other 4 stroke garden tools. Haven't used it in them yet but used Magnatec in my D Max for years with good results. The price on sale was also fantastic.
| Application Type | Diesel |
| SAE viscosity class | 15W-40 |
| viscosity class | 15W-40 |
| Warranty | Limited |
Castrol MAGNATEC Diesel 15W-40 Engine Oil 5L 3437335 fits MAHINDRA CJ 3 2.1 D All-wheel Drive, 2.1 D
Delivery between 7–15 July $9.90
Castrol Magnatec Diesel 15W-40 Semi Synthetic Engine Oil 5L, 3437335
Delivery between 8–10 July $15
Castrol MAGNATEC Diesel Engine Oil, 15W-40, 5 Litres
30-day returns
I have my 1999 model Subaru Forester serviced regularly by my trusted mechanic but always supply this oil as it always seems to run much more quiet on start up compared to other oils. It was also recommended to me by a long time friend and mechanic in another state as being the most suitable for my car. I have used it since I bought the car new. I still own the car because its still 100% reliable and in perfect running order. I always wait until its on special and grab 1 or 2 bottles from Supercheap Auto and hold them until needed rather than paying full price. I always order online as I am disabled and cannot always get to the store during the sale period and then either collect them myself or have someone do it for me. Its a good reliable product and the online ... MoreI have my 1999 model Subaru Forester serviced regularly by my trusted mechanic but always supply this oil as it always seems to run much more quiet on start up compared to other oils. It was also recommended to me by a long time friend and mechanic in another state as being the most suitable for my car. I have used it since I bought the car new. I still own the car because its still 100% reliable and in perfect running order. I always wait until its on special and grab 1 or 2 bottles from Supercheap Auto and hold them until needed rather than paying full price. I always order online as I am disabled and cannot always get to the store during the sale period and then either collect them myself or have someone do it for me. Its a good reliable product and the online purchase and click and collect is my favourite mode of buying from Supercheap. Its a win win for both of us!
Castrol MAGNATEC Engine Oil -10W-40, 5 Litre is a Quality and consistent product that I can always rely on to keep my car running efficiently at all times.My only significant concern is there is no tangible record in my account and or on my paper purchase receipt stating that my competition entry has been successful. This issue also occurs regarding my emailed receipt which if in place would give entrants peace of mind.
Bought this for my new Tool Pro pressure washer and other 4 stroke garden tools. Haven't used it in them yet but used Magnatec in my D Max for years with good results. The price on sale was also fantastic.
I've been using Castrol products for about twenty years and at that time the Magnatec range of products was relatively new to Castrol's portfolio… at least in Australia. Since then I believe the Magnatec range of products has been a very successful product line for Castrol.This particular Magnatec product is a high quality 10W-40 part-synthetic engine oil I have personally used many times without issue or concern. It meets the latest API SN/CF and ACEA A3/B4 specifications making it especially suited to many Toyota (i.e. Corolla, Camry) petrol vehicles and some light duty diesels without a diesel particulate filter (DPF).A very similar formulation known as Magnatec Professional Series (though only available to their trade customers in bulk containers) is used by ... MoreI've been using Castrol products for about twenty years and at that time the Magnatec range of products was relatively new to Castrol's portfolio… at least in Australia. Since then I believe the Magnatec range of products has been a very successful product line for Castrol.This particular Magnatec product is a high quality 10W-40 part-synthetic engine oil I have personally used many times without issue or concern. It meets the latest API SN/CF and ACEA A3/B4 specifications making it especially suited to many Toyota (i.e. Corolla, Camry) petrol vehicles and some light duty diesels without a diesel particulate filter (DPF).A very similar formulation known as Magnatec Professional Series (though only available to their trade customers in bulk containers) is used by many Toyota/Lexus dealerships, however I particularly like this 10W-40 formulation.This Magnatec product is also compatible with the majority of gaskets and seals used in Toyota petrol vehicles built from 1998 onwards.Always refer to your manufacturer’s handbook for the recommended specification of your vehicle as your vehicle may require a different viscosity such as 5W-30 or thinner.
It has only been 2 weeks but my car hasn’t blown up so can’t complain. Hard to review an engine oil without a lab test. Used to use Delo400 but can’t find that in QLD anymore. I have an MN Triton with a diesel that has its roots in the 80s and 90s so don’t feel I need some super duper synthetic. I replaced the oil myself along with a Ryco filter and a mechanic checked it a week later and said it looked ‘ok’. Fairly certain this is what a lot of the Mitsi dealers use for services.
I've used Magnatec oil for the last ten years, I've always been impressed with the way the oil holds on to all the metal parts no matter how long it has been since it was last started. Using the dip stick to check the oil level, you always have to wipe the stick first and redipe it because the stick is covered with oil which proves how the oil sticks to the metal.
I have not yet put this in my 308,000 km Truck, but wished to say thanks for when click and collect ended with me opening Diesel 15-40 for a winter top up. The Store replaced new with ordered Magnatec. I hope starting wear is reduced by this Product, as I am already watching Oil Filter Technology. Thanks!
Confident from long term use that this oil works well with Toyota 78 series (2002). The vehicle has spent many years in the outback of NT and has endured extreme temperatures and terrain. The oil is changed every 6000km and after 300 000km still does not use oil. I regularly add an oil additive to help hold its’ viscosity.
Magnatec, it sure is. I got some of the oil on my hands, and everything metallic within reach started to stick to my hands. I'd grab a spanner, and the new oil filter would whip straight over, I was like a junkyard magnetic crane.......OK, it's not like that, but better than the usual review droning on, hahahahaaa.
never had any issues. all our car engines have run without fault. great oil for engines even though the write ups are not agreeing or reliable id say. We shall leave on a good note Hi ghly recommended
| Application Type | Diesel |
| SAE viscosity class | 15W-40 |
| viscosity class | 15W-40 |
| Warranty | Limited |
