Create a clean environment for your new oil and help remove engine oil sludge and harmful contaminates with Penrite Engine Flush. The solvent free formula safely breaks down and removes deposits, sludge and harmful contaminants that are simply removed with your old engine oil and being solvent free means it wont damage oil seals. Zinc is added for extra wear protection and simple to use formulation cleans your engine in as little as 10 minutes. Penrite Oil Flush is suitable to use with all engine types including petrol, diesel and LPG engines. It is safe to use on vehicles fitted with catalytic converters and diesel particulate filters. Penrite Oil Flush should be used 50mL per litre, the 375mL bottle will treat up to 7.5 Litres.
Create a clean environment for your new oil and help remove engine oil sludge and harmful contaminates with Penrite Engine Flush. The solvent free formula safely breaks down and removes deposits, sludge and harmful contaminants that are simply removed with your old engine oil and being solvent free means it wont damage oil seals. Zinc is added for extra wear protection and simple to use formulation cleans your engine in as little as 10 minutes. Penrite Oil Flush is suitable to use with all engine types including petrol, diesel and LPG engines. It is safe to use on vehicles fitted with catalytic converters and diesel particulate filters. Penrite Oil Flush should be used 50mL per litre, the 375mL bottle will treat up to 7.5 Litres.
Penrite 375ml Engine Flush
Create a clean environment for your new oil and help remove engine oil sludge and harmful contaminates with Penrite Engine Flush. The solvent free formula safely breaks down and removes deposits, sludge and harmful contaminants that are simply removed with your old engine oil and being solvent free means it wont damage oil seals. Zinc is added for extra wear protection and simple to use formulation cleans your engine in as little as 10 minutes. Penrite Oil Flush is suitable to use with all engine types including petrol, diesel and LPG engines. It is safe to use on vehicles fitted with catalytic converters and diesel particulate filters. Penrite Oil Flush should be used 50mL per litre, the 375mL bottle will treat up to 7.5 Litres.
Create a clean environment for your new oil and help remove engine oil sludge and harmful contaminates with Penrite Engine Flush. The solvent free formula safely breaks down and removes deposits, sludge and harmful contaminants that are simply removed with your old engine oil and being solvent free means it wont damage oil seals. Zinc is added for extra wear protection and simple to use formulation cleans your engine in as little as 10 minutes. Penrite Oil Flush is suitable to use with all engine types including petrol, diesel and LPG engines. It is safe to use on vehicles fitted with catalytic converters and diesel particulate filters. Penrite Oil Flush should be used 50mL per litre, the 375mL bottle will treat up to 7.5 Litres.
in 33 offers
The lowest price for Penrite 375ml Engine Flush right now is $12.72 at Carthy's Car Care, compared across 29 retailers.
The all-time low was $9.95 on 7 Dec 2025 — today's price is 28% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 19:22:31
Penrite Engine Flush
Delivery between 12–18 June $9.70
Penrite Engine Flush 375ML
Penrite Engine Flush (2 Sizes Available) 375ml
Delivery between 15–17 June $15
Penrite Engine Oil Flush - 375mL
Delivery between Thu – Fri $12.61
Penrite Engine Oil Flush - 375mL
Penrite Engine Oil Flush - 375mL
Delivery between 16–18 June $12.61
Penrite Engine Flush - 375ml
Delivery between Thu – Tue $5.95
ADEF375 Filter by Filtersplus
Penrite Engine Flush Cleaner 375 ML
Delivery between 10–19 June $14.95
Penrite Engine Flush 375mL - ADEF375
Delivery $15
originally posted on supercheapauto.com.au
I used the Penrite app and went through the Supercheap online store to find the suitable products for my oil change and found this.Ordered it online and picked it up the following day.Flushed the system and it was super clean, ready for the new oil.Changed the oil and boom, the car is running great.Really happy with this whole process
originally posted on repco.com.au
This product really works. Had an engine that the previous owners used the wrong type of oil in, was a mess inside with old crystallised oil throughout the head and sump. Followed the instructions of the flush and then dropped the old oil after running the engine and the engine flush for 20 minutes. A ton of sludge came out so topped up the oil and ran a second flush through it and again the new oil came out dirty as. Now the engine is now really clean and a ton of the sludge has been cleaned out. Would recommend this product as it does what it says it will.
originally posted on autobarn.com.au
Had been a bit slack on the last oil change, so ran some Penrite oil flush and it definitely made a significant difference. Car is now running much smoother, quieter and fuel economy had improved.
| Liquid volume | 375 Millilitres |
| Vehicle service type | Car, Street Motorcycle |
| Is discontinued by manufacturer | No |
| Country of origin | Australia |
Penrite Engine Flush
Delivery between 12–18 June $9.70
Penrite Engine Flush 375ML
Penrite Engine Flush (2 Sizes Available) 375ml
Delivery between 15–17 June $15
Penrite Engine Oil Flush - 375mL
Delivery between Thu – Fri $12.61
Penrite Engine Oil Flush - 375mL
I used the Penrite app and went through the Supercheap online store to find the suitable products for my oil change and found this.Ordered it online and picked it up the following day.Flushed the system and it was super clean, ready for the new oil.Changed the oil and boom, the car is running great.Really happy with this whole process
This product really works. Had an engine that the previous owners used the wrong type of oil in, was a mess inside with old crystallised oil throughout the head and sump. Followed the instructions of the flush and then dropped the old oil after running the engine and the engine flush for 20 minutes. A ton of sludge came out so topped up the oil and ran a second flush through it and again the new oil came out dirty as. Now the engine is now really clean and a ton of the sludge has been cleaned out. Would recommend this product as it does what it says it will.
Had been a bit slack on the last oil change, so ran some Penrite oil flush and it definitely made a significant difference. Car is now running much smoother, quieter and fuel economy had improved.
As I didn’t want a cheap mineral oil from the station for servicing in my truck I wanted to fully flush out my engine and use Penrite HPR 5 5W-40 Engine Oil 5L and worked as it should. Now happy have the tools required to do my own servicing will continue to use this flush.
Clean Up Your Ride: Must-Have essential for every DIY Car Enthusiast! Safely cleans your engine every oil change. I have been using this every time for years. Prado works a treat.
Pros: As always Penrite leading the way great product and noticeable difference will def recommend for all.Cons: only fault is bottle design with no line markings and black bottle it’s impossible to add the right amount straight from the bottle a clear bottle with markings so you can add the instructed amount without having to use other ways of measuring would see a 5 star review
Use this with every oil change. Service my cars at 5000km, never have any with sludge.Refill with C3 5/30 Full Synthetic. Bmw love it.
Like a spa day for your engine. This little bottle packs a punch, cleaning out all the gunk and grime that's been bogging down your engine's mojo. Just pour it in before an oil change, let it do its magic, and say hello to smoother, happier motoring. Your engine will thank you!
As always Penrite has made an awesome product. This was my 4th time using the engine flush on an old diesel engine. I have noticed a big change in the colour of the oil at each change. Not as dark and still looks good for another 10 thousand k's. Highly recommended Australian owned company. So show your support and your engine will love you for it.
I’ve been using this every 5,000 kms in a very high milage prius that had lived a hard life before my ownership. I cant see beyond the splash guard on the valve cover, but its changed from used bbq hotplate black to silver honey aluminium, so its doing its job. Id say its helped the rings, which are known to gum up in high mileage prius (500,000kms). It’s definitely using less oil between changes.
| Liquid volume | 375 Millilitres |
| Vehicle service type | Car, Street Motorcycle |
| Is discontinued by manufacturer | No |
| Country of origin | Australia |
