Castrol EDGE 5W-40 A3/B4 is an advanced full synthetic engine oil suitable for use in automotive petrol and diesel vehicles where the manufacturer recommends ACEA A3/B3, A3/B4 or API SN/CF or earlier specification 5W-40 lubricant.
Castrol EDGE 5W-40 A3/B4 is an advanced full synthetic engine oil suitable for use in automotive petrol and diesel vehicles where the manufacturer recommends ACEA A3/B3, A3/B4 or API SN/CF or earlier specification 5W-40 lubricant.
in 5 offers
The lowest price for Castrol Edge 5W-40 A3/B4 Engine Oil 5L - 3421235 right now is $71.00 at eBay.com.au, compared across 5 retailers.
The all-time low was $28.99 on 30 May 2026 — today's price is 145% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Castrol Edge 5W-40 A3/B4 Engine Oil 5L - 3421235
Castrol EDGE 5W-40 A3/B4 is an advanced full synthetic engine oil suitable for use in automotive petrol and diesel vehicles where the manufacturer recommends ACEA A3/B3, A3/B4 or API SN/CF or earlier specification 5W-40 lubricant.
Castrol EDGE 5W-40 A3/B4 is an advanced full synthetic engine oil suitable for use in automotive petrol and diesel vehicles where the manufacturer recommends ACEA A3/B3, A3/B4 or API SN/CF or earlier specification 5W-40 lubricant.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 03:11:00
Castrol EDGE 5W-40 A3/B4 Engine Oil 5 Litre
Free delivery
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Castrol Edge 5w-40 Full Synthetic Engine Oil 5l
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 EDGE 5W-40 A3/B4 Engine Oil 5L 3421235 fits MERCEDES-BENZ GLE 450 AMG 4-matic (292.364), AMG 63 S 4-matic (292.375), 500 4-matic (166.073),...
Delivery between 12–22 June $9.90
Castrol EDGE A3/B4 5W-40 Engine Oil 5L - 3421235
Delivery $12
Castrol EDGE Engine Oil - 5W-40, 5 Litres
Delivery between 12–17 June $9.99
originally posted on repco.com.au
Top notch synthetic oil from the best. Mazda 3 BK used to take 5-30 but the car hit over 160000 and the 40 restores the torque perfectly, especially for highway driving. Its been freezing in the mornings so 5w no worries smooth as butter.
originally posted on supercheapauto.com.au
It's oil. Guess I'll know in about 400,000 - 500,000km if it was good or not. Oh Wait. Nah. I'll need to change brands and do the same again to know if other stuff was better.It meets a standard guys. Who knows if it's better or worse than something else. I'm not a scientist.Price was good when on special.
originally posted on supercheapauto.com.au
OK though a little overpriced considering it is an imported item (from Malaysia). Should be somewhat cheaper than the locally produced equivalent Penrite
| Oil Composition | Full Synthetic |
| SAE | 5W-40 |
| ACEA | A3/B4 |
| API | SN / CF |
| BMW | BMW Longlife-01 |
Castrol EDGE 5W-40 A3/B4 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 Edge 5w-40 Full Synthetic Engine Oil 5l
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 EDGE 5W-40 A3/B4 Engine Oil 5L 3421235 fits MERCEDES-BENZ GLE 450 AMG 4-matic (292.364), AMG 63 S 4-matic (292.375), 500 4-matic (166.073),...
Delivery between 12–22 June $9.90
Castrol EDGE A3/B4 5W-40 Engine Oil 5L - 3421235
Delivery $12
Castrol EDGE Engine Oil - 5W-40, 5 Litres
Delivery between 12–17 June $9.99
Top notch synthetic oil from the best. Mazda 3 BK used to take 5-30 but the car hit over 160000 and the 40 restores the torque perfectly, especially for highway driving. Its been freezing in the mornings so 5w no worries smooth as butter.
It's oil. Guess I'll know in about 400,000 - 500,000km if it was good or not. Oh Wait. Nah. I'll need to change brands and do the same again to know if other stuff was better.It meets a standard guys. Who knows if it's better or worse than something else. I'm not a scientist.Price was good when on special.
OK though a little overpriced considering it is an imported item (from Malaysia). Should be somewhat cheaper than the locally produced equivalent Penrite
I require 9 Litres for the X5 so I mix 5 litre of the 5W 40 + 4 litre of the 5W 30 for summer and reverse volumes for winter. Thoroughly recommended for any vehicle. Does what it is supposed and stays honey golden up until about 5000kms ( I change at 6000kms but if it's on one of my long travels out back happy to change if I have to at about 10000kms). This Xy E70 has done 230000kms, 500000 on the previous E53. No blue smoke, no oil consumption between oil changes except for the usual oil leaks (about 100ml between changes, weeping vale cover gasket). Cheers Gaz
Very good quality. I have an MB B200 (2012) and noted engine runs smoother. Less noise on cold starts. Highly recommended.
Very good premium oil for the price. Used in a Demio with 130km instead of the recommended 5-30W. Definitely got a bit more oomph!
Me and the motor got wild on this stuff last weekend. (Mk6 Golf 2009 1.4TSI)Emptied her out and stocked up with this stuff.We then lost track of time holding a "who can chug the most in 1hr" competition.Unfortunately the Mk6 Golf won (he managed to sink 3.7L approx) and I could only manage 0.8L before puking.I had the last laugh though as the Golf now has the 'rona, get rekt lad,Happy driving
Got this oil today seeing that it was only $49, I regularly buy 0w-40 but thought the price was to good to pass on and after draining my old oil and replacing it with this I noticed an immediate difference with my engine. Runs smoother and healthier and I can really fell my engine running well under high boost. Definitely recommend
Great Oil for high performance engines; not experienced burning, sludge or color changes even after many kilometers
Good for cold starts and being a Toyota Aurion owner you want a oil that's not to thin like 5w30 but 5w40 for better protection all year round so the castrol EDGE 5w40 and nulon 5w40 are my go-to oil car starts easier in winter with no rattle type sound which I get when I have tried penrite hpr5 5W40 a few Times
| Oil Composition | Full Synthetic |
| SAE | 5W-40 |
| ACEA | A3/B4 |
| API | SN / CF |
| BMW | BMW Longlife-01 |
