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Scheduled Maintenance and Testing

Please be advised that our website will be undergoing scheduled maintenance and testing during the following time: Sunday, 7 June 2026

  • AEST (Melbourne / Sydney): 2:30 PM – 5:30 PM
  • ACST (Adelaide / Darwin): 2:00 PM – 5:00 PM
  • AWST (Perth): 12:30 PM – 3:30 PM

During this time, the website will be temporarily unavailable.
We apologise for any inconvenience and appreciate your patience while we complete this maintenance.

Thanks,
JAK Max Team

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OPTI Lubricants

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OPTI Lubricants, including the Opti-4 range, are formulated specifically for the demands of power equipment. Opti-4's patented Eutectic additive technology reduces friction, heat, and wear, giving your customers' 4-cycle engines better protection and a longer service life.

Find your local dealer today.

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Opti-2 - Pump

Opti-2 Pump – fits 4 litre bottle and 20 litre…

PART NUMBER

JM21624

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Opti-4 - 1 Litre Bottle 10W40 (1 x 4 Bottle Pack)

Opti-4 – 1 Litre Bottle 10W40 (1 x 4 Bottle…

PART NUMBER

JM44121

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Opti-4 - 1 Litre Bottles 10W40 (1 x 4 Bottle Pack)

Opti-4 – 1 Litre Bottles 10W40 (1 x 4 Bottle…

PART NUMBER

JM43141

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Opti-4 - 4 Litre Jug 10W40 (1 x 4 Litre Bottle)

Opti-4 – 4 Litre Jug 10W40 (1 x 4 Litre…

PART NUMBER

JM44444

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Opti-4 - 600ml Bottle SAE30 (1 x 3 Bottle Pack)

Opti-4 – 600ml Bottle SAE30 (1 x 3 Bottle Pack)…

PART NUMBER

JM43024