Octane Booster is a fuel treatment designed to enhance the octane rating of regular 91 (RON) unleaded octane petrol. It is formulated to increase the octane rating by up to 2.5 when used at a ratio of 375ml per 50 litres of petrol. Its unique formulation improves power & acceleration, enhances fuel economy, prevents engine detonation damage, reduces "" with low octane fuel and provides protection against valve seat recession. It will also keep injectors clean for optimum performance and economy. Octane Booster is designed for use in all petrol engines in passenger cars, 4WD', light & heavy commercial vehicles, motorcycles, marine and stationary engines. It can also be used in competition vehicles to increase power and performance. Octane Booster will readily mix with all types of unleaded fuels. A 2.5 increase in octane rating is dependent upon the fuel being used and is based upon regular 91 unleaded petrol. The increase in octane rating will vary between different grades of petrol.
Octane Booster is a fuel treatment designed to enhance the octane rating of regular 91 (RON) unleaded octane petrol. It is formulated to increase the octane rating by up to 2.5 when used at a ratio of 375ml per 50 litres of petrol. Its unique formulation improves power & acceleration, enhances fuel economy, prevents engine detonation damage, reduces "" with low octane fuel and provides protection against valve seat recession. It will also keep injectors clean for optimum performance and economy. Octane Booster is designed for use in all petrol engines in passenger cars, 4WD', light & heavy commercial vehicles, motorcycles, marine and stationary engines. It can also be used in competition vehicles to increase power and performance. Octane Booster will readily mix with all types of unleaded fuels. A 2.5 increase in octane rating is dependent upon the fuel being used and is based upon regular 91 unleaded petrol. The increase in octane rating will vary between different grades of petrol.
Penrite Octane Booster 375ml ADOCTB375
Octane Booster is a fuel treatment designed to enhance the octane rating of regular 91 (RON) unleaded octane petrol. It is formulated to increase the octane rating by up to 2.5 when used at a ratio of 375ml per 50 litres of petrol. Its unique formulation improves power & acceleration, enhances fuel economy, prevents engine detonation damage, reduces "" with low octane fuel and provides protection against valve seat recession. It will also keep injectors clean for optimum performance and economy. Octane Booster is designed for use in all petrol engines in passenger cars, 4WD', light & heavy commercial vehicles, motorcycles, marine and stationary engines. It can also be used in competition vehicles to increase power and performance. Octane Booster will readily mix with all types of unleaded fuels. A 2.5 increase in octane rating is dependent upon the fuel being used and is based upon regular 91 unleaded petrol. The increase in octane rating will vary between different grades of petrol.
Octane Booster is a fuel treatment designed to enhance the octane rating of regular 91 (RON) unleaded octane petrol. It is formulated to increase the octane rating by up to 2.5 when used at a ratio of 375ml per 50 litres of petrol. Its unique formulation improves power & acceleration, enhances fuel economy, prevents engine detonation damage, reduces "" with low octane fuel and provides protection against valve seat recession. It will also keep injectors clean for optimum performance and economy. Octane Booster is designed for use in all petrol engines in passenger cars, 4WD', light & heavy commercial vehicles, motorcycles, marine and stationary engines. It can also be used in competition vehicles to increase power and performance. Octane Booster will readily mix with all types of unleaded fuels. A 2.5 increase in octane rating is dependent upon the fuel being used and is based upon regular 91 unleaded petrol. The increase in octane rating will vary between different grades of petrol.
in 13 offers
The lowest price for Penrite Octane Booster 375ml ADOCTB375 right now is $16.25 at Carthy's Car Care, compared across 13 retailers.
The all-time low was $14.05 on 9 July 2025 — today's price is 16% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 2 Sept 2026.
Last updated at 02/09/2026 10:25:56
Penrite Octane Booster
Delivery between 7–11 Sept $9.70
Penrite Octane Booster Fuel 375mL ADOCTB375
Delivery between 3–15 Sept $10.95
Penrite Octane Booster Petrol 375mL - ADOCTB375
Delivery $12.50
Penrite Octane Booster Plus - 375ml
Delivery between Fri – Tue $9.95
Penrite 375ml Octane Booster
Free delivery
Penrite Octane Booster Plus - 375ml
Delivery between 7–15 Sept $7.95
Penrite Octane Booster Petrol 375ml - ADOCTB375
Penrite Octane Booster, 375 ml, ADOCTB375
Delivery between 9–11 Sept $15
Penrite Octane Booster, 375 ml, ADOCTB375
Penrite Octane Booster 375mL
Delivery between 7–10 Sept $9.99
originally posted on ebay.com
Very good product, servo has dirty fuel & had to fuel up w 91 octane. Car runs better on 95 octane so this product was a booster shot for my engine.
originally posted on supercheapauto.com.au
I have used this product many times in the past and every time this product performs as it states on the bottle, We’ll worth the spend.
originally posted on supercheapauto.com.au
Good product, works well when you put it in the car, i have been using for a very very long time now.
| Density at 15oC | 0.805 g/ml |
| Flashpoint | 71 0C |
| Pour Point | -59 0C |
| Kinematic Viscosity at 40oC | 1.26 |
| Nitrogen Content | 0.046% |
Penrite Octane Booster
Delivery between 7–11 Sept $9.70
Penrite Octane Booster Fuel 375mL ADOCTB375
Delivery between 3–15 Sept $10.95
Penrite Octane Booster Petrol 375mL - ADOCTB375
Delivery $12.50
Penrite Octane Booster Plus - 375ml
Delivery between Fri – Tue $9.95
Penrite 375ml Octane Booster
Free delivery
Very good product, servo has dirty fuel & had to fuel up w 91 octane. Car runs better on 95 octane so this product was a booster shot for my engine.
I have used this product many times in the past and every time this product performs as it states on the bottle, We’ll worth the spend.
Good product, works well when you put it in the car, i have been using for a very very long time now.
Great product that works well. Prevents tappets from ticking, which is a common issue when cars have had lower octane petrol used in cars that are tuned for 95 octane or above
It really works!! Smooth running, additional power, lesser consumption, better acceleration....
Great product, noticeable difference in cars performance. Very smooth and Responsive.
I use it when tracking modded LS1 engine, no scientific evidence other than it runs nicely at high rpm with 98 + the Penrite octane booster.
I usually use the Nulon octane booster to reduce pinging in my small block powered '52 Chev but it was sold out at all stores so I tried the Penrite version. I'm a huge fan if their oil and won't use anything else in my engine so had high hopes for the octane booster. Unfortunately, it made absolutely no difference what so ever.
Seems like a good product for the price. Clean the injectors in my car
definitely adds a bit of kick to your fuel, mowers,bike all run smoother
| Density at 15oC | 0.805 g/ml |
| Flashpoint | 71 0C |
| Pour Point | -59 0C |
| Kinematic Viscosity at 40oC | 1.26 |
| Nitrogen Content | 0.046% |
