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Castrol Engine Shampoo (Engine Flush) $3.50 @ Repco

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Usually sells for $15 to $20+ elsewhere, was on clearance at Repco for $10, then $5 and now $3.50 due to 30% off Castrol products stacking on the clearance price.

Castrol Engine shampoo doesn't contain any solvents unlike other engine flushes that can damage your seals and cause oil leaks.

Product video:
https://youtu.be/ZtGSLvYB9d0

Also spend over $30 on Castrol products and go in to the draw to win over $48,000 in prizes

Currently they also have Castrol GTX Ultraclean 15W-40 with a bonus filter for $23 (normally $39.99 without a filter) which night be useful to some after using the engine flush.
https://www.ozbargain.com.au/node/561618

Free pick up or $4.50 delivery fee (to me anyway) no matter how many I order.

Being a clearance item it might not be in stock in all stores, there was 18 at my local store and I ordered 9 to get the total over $30 to go in the draw to win the $48,000 worth of prizes.

Related Stores

Repco
Repco

closed Comments

  • It's on clearance, no one buys it unless they know how to do their own oil change

  • +2

    Good for the scalp

  • always wondering if these were a gimmick when changing oil frequently.

    • -4

      You left out a couple of words at the beginning of your sentence that would inform the reader who was wondering.

  • Imagine if inside each bottle of engine shampoo is 300 ml of engine oil!

    • Or maybe diesel?

  • I’d rather put a litre of morning fresh in the tank

  • +1

    I prefer Pantene Pro-V. Only the best for my engine.

  • +4

    Hmm - the only thing that I’d put in a engine is good quality engine oil… changed on a regular basis shouldn’t require oil flush additive’s

    • Good to flush when you miss 5 services or 100,000 service.

    • +6

      I always flush cars engines when I buy them as I have no idea how much the previous owner neglected oil changes, usually with diesel oil (due to the high detergent levels) and do a few 100km and change it over and over until it starts coming out like honey. You wouldn't believe how much crap I get out of some of them, I buy, sell and fix cars for a hobby and had 8 diffrent cars over the period of last year and do this regularly over the last 15 years or so.

      In theory you run the risk of getting oil leaks if seals/gaskets perished and the only thing stopping it leaking is a build up of sludge but I've never had that happen, also you could dislodge some sludge and it could get caught in a galley or turbo lines etc and cause engine or turbo failure but I haven't had that happen either.

      With most owners using synthetic oils and/or doing regular oil changes the sludge and carbon build up shouldn't get that bad but, but if you're talking about a 20-30+ year old car that may or may not have had it's oil changes neglected and always used mineral oil then engine flushing is good way to clean out the crap in the engine.

      As for oil additives, zinc and MoS2 are excellent additives to prevent engine wear. Zinc has been phased out by most of engine oil companies (Penrite still has some high zinc oils though) as it can cause damage to catalytic converters, and MoS2 is pretty much only available in Liqui Moly oils, but both are available as additives.

      I don't flush engines with every oil change after my initial flushes to get all the crap out of a newly purchased cars as if I do it once and continue to use good quality oil there is no need, as for zinc and MoS2 they are proven to reduce wear but I wouldn't advise anyone to add any engine additives without doing their own research first as most of them are snake oil but people will often believe the hype regardless.

      • Liquid Moly Ceratec is pretty amazing stuff imo.

        • I haven't used it but I've heard it's good stuff, lots of people on BITOG rate it highly.

      • I've also been recommending diesel oil instead of a harsh flush and a shorter service interval. Glad there are others who've been doing the same. The only "mechanic in a can" which I've seen work is Lucas transmission fix (and by fix, it improved, but didn't fully cure the issue).

        EDIT: Also, you can get a Zinc additive from abroad. I stocked up pre-covid and have used that when running in a newer motor (when combined with mineral).

    • +1

      +1. Got 195k on my corolla, oil comes out light golden brown everytime i change… been using castrol edge right from day 1.

  • Thanks. Got one to try out.
    Imagine it can't hurt. I use Castrol edge engine oil anyway

    • Hopefully it doesn't cause oil leaks down the road.

      Castrol makes a lot of different engine oils, there are better oils out there, and worse ones, doesn't mean much if you use Castrol.

  • After trying the nulon petrol injectors cleaner, the fuel consumption indicator goes up from 5.3L to 5.7L/100km, (odo 55k), not sure about this one, i don't want to top up the oil…

    • Get your injectors professionally cleaned (ultrasonic) if you think they need them, waste of money using additives for that purpose.

  • A gentle internal scrub is always good for the old banger

  • +1

    I know he receives some criticisms but this is still very informative:
    https://www.youtube.com/watch?v=Thszl7visBU

    • +1

      Ezarc has a good breakdown of this above too. What this video here doesn't cover is what's the risk of putting a good quality detergent based oil into a gummed up system?

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