Penrite MC-4ST 100% PAO Ester 10W-40 Motorcycle Oil 2.5L $44.10 + $12 Delivery ($0 C&C/ In-Store) @ Repco

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megadeth on 15/10/2025 - 23:07 repco.com.au (129 clicks)
Last edited 15/10/2025 - 23:14 by 1 other user

Nice stuff for motorcycles with wet clutches.
Has JASO MA2 spec (as per Penrite website).
Good summer season oil. 4L is also discounted presently.

PREMIUM 100% PAO and ESTER base oils for maximum heat resistance and high performance
FULL ZINC+ additive pack for ultimate wear protection
SHEAR FREE formulation eliminates viscosity loss
LATEST oil technology for less wear, sludge and piston deposits
MAXIMUM power and acceleration
FACTORY PROVEN by competition race teams
Backward compatible and suitable for use with SM, SL, SJ, SH and SG oils
Trusted protection for performance engines

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• 

  Dumax on 15/10/2025 - 23:28

  +1

  You can also get: Penrite Vantage Full Synthetic 10W-40 Engine Oil 6L for $55 ($53.75 with plus) delivered (expires tonight) from eBay which has JASO MA2 as well.

  • 

    ATangk on 15/10/2025 - 23:54

    Is this the item which has Jaso MA on the product label but is actually JASO MA2, but someone actually said its not recommended for motorcycles? It was quite confusing I remember.

    • 

      Dumax on 16/10/2025 - 01:46

      I'm not sure who said that it isn't recommended for motorcycles but it literally has a picture of a motorcycle on the front. Perhaps it's not suitable for all motorcycles but it's suitable for anything that requires JASO MA2.

      JASO MA2 meets and exceeds JASO MA specifications and is therefore suitable for those bikes as well.

      Perhaps MC-4ST is somehow optimised for motorcycles, but since both meet JASO MA2 it's hard to tell the practical difference from the marketing puff.

      • 

        HitlersDad on 16/10/2025 - 07:49

        Used in many different bikes with non-issue

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      kenjai on 16/10/2025 - 02:08

      Yea I can confirm it is now all JASO MA2 they just havent updated the photos for some retailers. and for your second question this is exclusively motorcycle engine oil, dont put it in ur car.

      • 

        ATangk on 16/10/2025 - 09:50

        I was referring to the Penrite Vantage, not the linked product. I only need 2L of oil per oil change, so 6L would probably go weird before I finished it all.

  • 

    poohduck on 16/10/2025 - 14:08

    +1

    it's not full syn. It uses base mineral oil with a synthetic package. The pao and ester blend is full syn, designed from the ground up just as a lube for high end bikes. Incidentally - if you ride hard, 15w50 is better for warmer weather, 10w40 for the colder months.

    Any good oil is supposedly fine if it is fit for purpose (wet clutch etc). Cheaper oil changed more often is better than expensive oil changed less often. I use the penrite full (pao and ester) syn @ 5000km road; 3000 - 4000 if a track day or two included

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  StopSpending on 16/10/2025 - 00:32

  I just bought the mc 4st 10W-50 in 4 litres for $64.80 which works out a bit cheaper per litre.
  What's the difference?

  • 

    kenjai on 16/10/2025 - 02:06

    Well, just don't put 10w50 in bikes that the manufacturer recommends 10w30, maybe u can get away with 10w40, but still its a nah for me.

    • 

      poohduck on 16/10/2025 - 14:11

      is there a bike where 10w30 is recommended?

      • 

        kenjai on 17/10/2025 - 00:07

        +1

        Honda Monkey, Grom and cbr600rr uses 10w30 according to the manual.

  • 

    ATangk on 16/10/2025 - 09:58

    https://penriteoil.com.au/products/mc-4st-full-synthetic-10w…
    vs
    https://penriteoil.com.au/products/mc-4st-10w-40-100-pao-est…

    Of the more significant differences is the red bottle contains PAO or Polyalphaolefin wh ich is marketed as a premium lubricant for extreme temps/high performance. They market it as the 'race' oil for teams. But I believe it also has less lifetime than the yellow stuff (Total base number is lower)