Castrol Magnatec 4L 5W-30 $45.59 ($36.12 @ M10), 10W-40 $35.39 ($30.08 @ M10), 10W-30 $27.59 ($23.45 @ M10) @ The Warehouse

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The Warehouse

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  kianjz2 on 31/07/2026 - 14:22

  Just took the last 2 Castrol Magnetic 10W-30 from Mitre10 Glenfield, $23.45 as listed. Thanks!

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  Senior Mouse on 01/08/2026 - 10:52

  I reckon Mitre 10 don't bother with dynamically updating their pricing like Bunnings to prevent undercutting and just limit the amount of damage per day by only partially stocking the shelves that they refill daily

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  pdevonporf on 01/08/2026 - 11:17

  Spend $80 and get $8 off code SAVE8

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  Dan Baker on 01/08/2026 - 18:36

  Worked for me to, but I've had to mix the semi-synth with full synth.

  It's only to top it up, though, and I'll switch to semi-synth next time fully in about 3,000 KMs.

  They didn't even quiz that it's the new picture versus the old bottles that they're holding.

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  JFUNK on 01/08/2026 - 19:27

  Don't forget about the other engine oil brands as they are discounted as well, some examples below: https://www.thewarehouse.co.nz/search?q=engine+oil&lang=defa…

  Caltex Havoline Range
  Caltex Havoline Formula SP 20W-50 4L: $20.99 NZD (was $34.99).Specification: SAE 20W-50, API SP, Mineral.
  Caltex Havoline Formula SP 10W-30 Engine Oil 4L: $22.19 NZD (was $36.99).Specification: SAE 10W-30, API SP, Mineral.
  Caltex Havoline Synthetic Blend SN 10W-40 4L: $30.59 NZD (was $50.99).Specification: SAE 10W-40, API SN, Semi-Synthetic.
  Caltex Havoline C3 5W-30 Fully Synthetic Engine Oil 4L: $36.59 NZD (was $60.99).Specification: SAE 5W-30, Fully Synthetic, ACEA C3.

  Petronas Nexta Range
  Petronas Nexta 20W-50 4L: $18.59 NZD (was $30.99).Specification: SAE 20W-50, Mineral.
  Petronas Nexta 10W-40 4L: $30.59 NZD (was $50.90).Specification: SAE 10W-40, API SN, Synthetic Technology.
  Petronas Nexta 5W-30 4L: $36.59 NZD (was $60.99).Specification: SAE 5W-30, API SP, Fully Synthetic.

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    pdevonporf on 01/08/2026 - 21:41

    Also WD-40, CRC 556, CRC brake clean and CRC silicon. All substantially cheaper than Repco , super cheap

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