Skip to content Skip to navigation menu

Additives

Shop Additives Categories

Your Selected Vehicle


Brands

Show More Show Less

Part Location

Price

Sort by
Repco Fuel System Cleaner 500mL - RFSC500

Repco Fuel System Cleaner 500mL - RFSC500

$35
Fitment Notes:
See More
LIQUI MOLY Petrol Injection Cleaner 300ml - 2786

LIQUI MOLY Petrol Injection Cleaner 300ml - 2786

$30
Fitment Notes:
See More
Penrite P26 DPF Cleaner Aerosol 400mL - P26DPFCA0004

Penrite P26 DPF Cleaner Aerosol 400mL - P26DPFCA0004

$41
Fitment Notes:
See More
Holts Wondarweld Cooling System Repair 250ml - HREP0062A

Holts Wondarweld Cooling System Repair 250ml - HREP0062A

$23
Fitment Notes:
See More
K-SEAL Ultimate Head Gasket Repair - K3501

K-SEAL Ultimate Head Gasket Repair - K3501

$102
Fitment Notes:
See More

Explore 4WD & Adventure

LIQUI MOLY Engine Oil Resealer 300ml - 2782

LIQUI MOLY Engine Oil Resealer 300ml - 2782

$29
Fitment Notes:
See More
Repco Lifter Free & Tune Up 300mL - RLFTU

Repco Lifter Free & Tune Up 300mL - RLFTU

$33
Fitment Notes:
See More
Rislone Engine Oil Burning & Leak Repair 500ml - 44223

Rislone Engine Oil Burning & Leak Repair 500ml - 44223

$81
Fitment Notes:
See More
Nulon Engine Stop Smoke 500ml - SS
Clearance

Nulon Engine Stop Smoke 500ml - SS

$10
Fitment Notes:
See More
Penrite Ultimate 6 in 1 Fuel Stabiliser 250ml - ADUFS250

Penrite Ultimate 6 in 1 Fuel Stabiliser 250ml - ADUFS250

$35
Fitment Notes:
See More
Rislone Engine Treatment Concentrate 500ml - 44102

Rislone Engine Treatment Concentrate 500ml - 44102

$23
Fitment Notes:
See More
Morey's Oil Stabiliser 1L - MOS

Morey's Oil Stabiliser 1L - MOS

$35
Fitment Notes:
See More
Penrite Diesel Injector Cleaner 20L - ADDIC020

Penrite Diesel Injector Cleaner 20L - ADDIC020

$435
Fitment Notes:
See More
Penrite Shift Eze 125ml - SHIFTEZE000125

Penrite Shift Eze 125ml - SHIFTEZE000125

$29
Fitment Notes:
See More
Repco Cooling System Flush 300ml

Repco Cooling System Flush 300ml

$16
Fitment Notes:
See More
Morey's Diesel Injector Cleaner 1L - MDIC

Morey's Diesel Injector Cleaner 1L - MDIC

$45
Fitment Notes:
See More
Nulon Upper Engine Cleaner 150gm - UEC150

Nulon Upper Engine Cleaner 150gm - UEC150

$29
Fitment Notes:
See More
Penrite Lifter and Tappet Fix 375ml - ADLTF375

Penrite Lifter and Tappet Fix 375ml - ADLTF375

$31
Fitment Notes:
See More
Rislone Rear Main Seal Repair 500ml - 44240

Rislone Rear Main Seal Repair 500ml - 44240

$38
Fitment Notes:
See More
Penrite Valve Shield Petrol Additive 250mL - ADVS250

Penrite Valve Shield Petrol Additive 250mL - ADVS250

$30
Fitment Notes:
See More
Penrite Radiator Stop Leak 375mL - ADRSL375

Penrite Radiator Stop Leak 375mL - ADRSL375

$30
Fitment Notes:
See More
Penrite Engine Oil Stop Leak 375ml - ADESL375

Penrite Engine Oil Stop Leak 375ml - ADESL375

$24
Fitment Notes:
See More
Penrite Motor Cycle Foam Filter Kit  - MCFFCKIT

Penrite Motor Cycle Foam Filter Kit - MCFFCKIT

$167
Fitment Notes:
See More
Nulon Gearbox Treatment 125ml - G70
Clearance

Nulon Gearbox Treatment 125ml - G70

$6
Fitment Notes:
See More
LIQUI MOLY Diesel Purge Plus 500ml - 2790

LIQUI MOLY Diesel Purge Plus 500ml - 2790

$30
Fitment Notes:
See More
One Shot Radiator Stop Leak - 20050

One Shot Radiator Stop Leak - 20050

$9
Fitment Notes:
See More
Penrite Engine Stop Smoke 375mL - ADESS375

Penrite Engine Stop Smoke 375mL - ADESS375

$19
Fitment Notes:
See More
Penrite Engine Boost+ 500ml - PSPEB0005
Clearance

Penrite Engine Boost+ 500ml - PSPEB0005

$10
Fitment Notes:
See More
Rislone Engine Oil Stop Leak Additive 325ml - 44209

Rislone Engine Oil Stop Leak Additive 325ml - 44209

$20
Fitment Notes:
See More
Valvoline Diesel Injector Cleaner 350ML-T/PAK - 8550

Valvoline Diesel Injector Cleaner 350ML-T/PAK - 8550

$38
Fitment Notes:
See More
Rislone One Seal Stop Leak 325ml - 44334

Rislone One Seal Stop Leak 325ml - 44334

$21
Fitment Notes:
See More
Sealwell Coolant System Conditioner 2 Pack - T51012

Sealwell Coolant System Conditioner 2 Pack - T51012

$27
Fitment Notes:
See More
Repco Diesel Injector Cleaner 300ml - RDIC

Repco Diesel Injector Cleaner 300ml - RDIC

$16
Fitment Notes:
See More
Flashlube Diesel Conditioner 50ml - FD50MX20B

Flashlube Diesel Conditioner 50ml - FD50MX20B

$7
Fitment Notes:
See More
Showing 40 - 78 of 125 products

The best Engine Additives for any situation

As you click through the engine additives section of this website or stroll down the aisle at a Repco store near you, the range of engine additives seem endless. The type of driving you do will have a bearing on the use of additives also. The family vehicle doing small run school pick-ups and drop-offs or those travelling in stop and start traffic may benefit through the use of a fuel additive by getting improved mileage or through an improvement in the performance of your engine. Best part of all, for the relative small expense, its something well worth considering during your next shop. A new bottle once every 5000km's is a small price to pay and your engine will feel all the better for it.

If you're searching for a way lengthen the life of your engine and the trasmission is functioning well, then a bottle of Trans fluid should give you that extension. For those transmissions shifting well but have sprung a leak, a bottle of Transmission Stop Leak will swell the seals and slow down the leak and allow you time to replace the seal or gasket. A lick of Shift Eze or Sudder Fix should also provide peace of mind.

For those driving classics or older cars, an oil additive will provide an extra layer of protection. When performing your next oil change, slip in a bottle of engine oil additive. Whilst its no magic fix, adding a bottle when performing your oil and filter change will be the next best thing.

Noticed a slight puddle on your driveway or in the garage? Chances are you have a cracked radiator, a loose hose clamp or a cracked heater hose. If after some examination you find the leak coming from your radiator, freeze plug or heater core, pouring a radiator additive directly into the radiator should seal the leak. Next time your due for a coolant change, drop another sealer in there. If the leak continues, its replacement time!

By simply maintaining your engine and applying a couple of engine additives when required, you'll continue to provide a level of care for your engine and ensure it gets you to where you need to be. These relative affordable products will preserve your engine and prolong any regualar trips to the mechanics workshop.

When it comes to your engine, we understand the importance of maintaining its care. Our range of engine additives, fuel additives, power steering fluid, transmission & radiator additives will make your product selection experience as simple and seamless as possible. Jump online and search by brand, or alternatively, if any further information is require our helpful staff in any one of our nationwide network of stores will be more than willing to provide any assistance.