Castrol GTX High Mileage 15W-50 oil provides extra protection for engines with over 100,000 kilometres and are starting to show signs of wear. As an engine gets older gaskets become brittle, seals can deteriorate and oil can burn faster. Castrol GTX High Mileage helps extend engine life by providing superior protection against deposit build-up, increased seal performance and protection against oil burn off. Castrol GTX High Mileage is the perfect oil to help extend the life of your engine.Castrol GTX High Mileage 15W-50 is suitable for use in automotive petrol engines where the manufacturer recommends an API SN or earlier specification 15W-50 oil is used. To find the oil type and viscosity suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.
Castrol GTX High Mileage 15W-50 oil provides extra protection for engines with over 100,000 kilometres and are starting to show signs of wear. As an engine gets older gaskets become brittle, seals can deteriorate and oil can burn faster. Castrol GTX High Mileage helps extend engine life by providing superior protection against deposit build-up, increased seal performance and protection against oil burn off. Castrol GTX High Mileage is the perfect oil to help extend the life of your engine.Castrol GTX High Mileage 15W-50 is suitable for use in automotive petrol engines where the manufacturer recommends an API SN or earlier specification 15W-50 oil is used. To find the oil type and viscosity suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.
in 9 offers
last seen 30 Oct 2026
The lowest price we last saw for Castrol GTX High Mileage 15W50 Engine Oil 5L - 3413802 was $44.99 at Amazon.com.au, compared across 9 retailers (last seen 30 Oct 2026). Prices may have changed since.
The all-time low we recorded was $18.00 on 30 Sept 2026.
Prices last updated 30 Oct 2026.
Castrol GTX High Mileage 15W50 Engine Oil 5L - 3413802
Castrol GTX High Mileage 15W-50 oil provides extra protection for engines with over 100,000 kilometres and are starting to show signs of wear. As an engine gets older gaskets become brittle, seals can deteriorate and oil can burn faster. Castrol GTX High Mileage helps extend engine life by providing superior protection against deposit build-up, increased seal performance and protection against oil burn off. Castrol GTX High Mileage is the perfect oil to help extend the life of your engine.Castrol GTX High Mileage 15W-50 is suitable for use in automotive petrol engines where the manufacturer recommends an API SN or earlier specification 15W-50 oil is used. To find the oil type and viscosity suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.
Castrol GTX High Mileage 15W-50 oil provides extra protection for engines with over 100,000 kilometres and are starting to show signs of wear. As an engine gets older gaskets become brittle, seals can deteriorate and oil can burn faster. Castrol GTX High Mileage helps extend engine life by providing superior protection against deposit build-up, increased seal performance and protection against oil burn off. Castrol GTX High Mileage is the perfect oil to help extend the life of your engine.Castrol GTX High Mileage 15W-50 is suitable for use in automotive petrol engines where the manufacturer recommends an API SN or earlier specification 15W-50 oil is used. To find the oil type and viscosity suggested for your vehicle; either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team.
Last updated at 30/10/2026 16:28:57
Castrol GTX High Mileage 15W-50 Engine Oil 5 Litre
Free delivery
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!
Castrol Gtx High Mileage 15W-50 Mineral Petrol Engine Oil 5L, 3413802
Delivery between 6–9 Nov $15
Castrol Gtx High Mileage 15w-50 Engine Oil 5 Litre
Free delivery
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!
Castrol GTX High Mileage 15W50 Engine Oil 5L 3413802 fits Ford Mondeo 2.0 (HA HB HC) NGA NGB NGC NGD FWD Petrol Sedan 07/95-02/00 97kw
30-day returns
GTX HIGH MILEAGE15W-50 5L - Shoalhaven Oil Supplies
GTX High Mileage 15W-50 5L - Castrol
Delivery between 2–10 Nov $15.20
Castrol GTX High Mileage 15W-50 Engine Oil 5L - 3413802
Delivery $12
Castrol Gtx High Mileage 15W-50 Mineral Petrol Engine Oil 5L, 3413802
CASTROL GTX HIGH MILEAGE 15W-50 ENGINE OIL 5L
originally posted on supercheapauto.com.au
I'm not recomending this product. As I used in my Mitsubishi Triton mk petrol. Starting to make lifter noise. I always used penrite oil but my bad took cheaper options.
originally posted on supercheapauto.com.au
Cars over 200k love this, reduce burning oil too. Molecule tech for start-ups.
originally posted on supercheapauto.com.au
I use this oil in my high mileage Holden Commodore fitted with 3.8 ecotec engine (300,000klm's). No top ups needed between oil changes and has cured rear main main oil seal leak (common problem with ecotec motors)..
| Viscosity | 15W-50 |
| Form Configuration | Oil |
| Form | Liquid |
| Compatible Material | Engine seals |
| Compatible Vehicle Type | Car |
Castrol GTX High Mileage 15W-50 Engine Oil 5 Litre
Free delivery
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!
Castrol Gtx High Mileage 15W-50 Mineral Petrol Engine Oil 5L, 3413802
Delivery between 6–9 Nov $15
Castrol Gtx High Mileage 15w-50 Engine Oil 5 Litre
Free delivery
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!
Castrol GTX High Mileage 15W50 Engine Oil 5L 3413802 fits Ford Mondeo 2.0 (HA HB HC) NGA NGB NGC NGD FWD Petrol Sedan 07/95-02/00 97kw
30-day returns
GTX HIGH MILEAGE15W-50 5L - Shoalhaven Oil Supplies
I'm not recomending this product. As I used in my Mitsubishi Triton mk petrol. Starting to make lifter noise. I always used penrite oil but my bad took cheaper options.
Cars over 200k love this, reduce burning oil too. Molecule tech for start-ups.
I use this oil in my high mileage Holden Commodore fitted with 3.8 ecotec engine (300,000klm's). No top ups needed between oil changes and has cured rear main main oil seal leak (common problem with ecotec motors)..
I've been buying the GTX high mileage for as long as it's been available. Mainly because I've never bought a vehicle with less than 100K on it. This oil has served me and all my older vehicles well.
I read other reviews about how their vehicles rear main stopped leaking after using it. Sure, I thought really. My story starts with purchasing a V6 Prado, checked on a pit after driving it 30 km. No leaks. Changed the oil to a full synthetic after 2 weeks, no I got drips on the floor. What the hell, back on the pit, it’s the rear main. Tried a leak stop, better but.Towed a 1750 kg cvan 9000ks, still a minor leak. GTX high mileage comes on sale 1/2 Price so I bought some. 500 ks later no rear main leak.
Unusual that this oil is only API SN, no ACEA A3. ACEA A3 has better wear protection, sludge protection and reduced piston deposits.Not saying that Castrol hasn't made a product that might meet or exceed ACEA A3 specifications, but disappointing that it does comply with the common European standard.
Castrol is my go to oil for my older vehicles. I have found the 15W-50 works well in my 1981 model Mercedes Benz W123 four cylinder petrol engine. It has a high 270,000 ks and still does not burn oil between changes (15,000 ks).
This oil is perfect for those older v6s and v8s that need a bit of loving... A great oil and usually a great price always good o go
I have a beautiful W140 with the M104 engine which are famous for going well over 1,000,000km but not without leaking oil along the way...I had been running HPR15 Diesel which is one of the thickest 50 weight oils on the market to keep the drips to a minimum. I have eyed this stuff up for a while cause of its ability to restore seals and I'm glad I gave it a go! Despite being a bit thinner (which is also a benefit) it has significantly reduced the oil leak, I'd say by about 75%!
I bought this for 2003 Avalon with 300K km on the odo. There was a small oil leakage (never dropped below the min level by the end of 10K km oil change cycle) but looks like after using this oil it is stopped.. Usually, I was using 15w-40 but now switching to this one..
| Viscosity | 15W-50 |
| Form Configuration | Oil |
| Form | Liquid |
| Compatible Material | Engine seals |
| Compatible Vehicle Type | Car |
