Buy wisely
Buy wiselyBuy wisely
For RetailersFor developers
  1. Home
  2. Home & Appliances
  3. Kitchen
  4. Cookware
  5. Stockpots & Casseroles
  6. Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020
Buy wisely

BuyWisely is your one stop price comparison platform, delivering the best deals from over 20,000 online shops. We empower shoppers to make smart, cost-effective choices by offering transparent pricing, price history, and the latest deals across a broad range of products. With BuyWisely, your money goes further.

Popular Shops
JB Hi-Fi
The Good Guys
Harvey Norman
Appliances Online
Bing Lee
Kogan
Amazon
Officeworks
Contact Us
[email protected]
Affiliate Disclosure
Legal Information
Privacy Policy
Logos provided by Logo.dev
© 2026 BuyWisely•Price data powered by pricesAPI.io•Retailers: SellWisely.io
- 89%
Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020
Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020
Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020
Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020

Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020

$31.83

Penrite Radiator Corrosion Inhibitor - Protects against cavitation, scaling and oxidisation Penrite Radiator Corrosion Inhibitor Concentrate is a Type 'B', radiator corrosion inhibitor that protects against cavitation, scaling and oxidisation in vehicles that do not require a Type '' Anti-Freeze Anti-Boil coolant. It is an effective engine coolant that uses a Hybrid Organic Acid Technology (HOAT) inhibitor to provide maximum protection against corrosion whilst providing superior heat transfer to reduce engine operating temperature. Penrite Radiator Corrosion Inhibitor is suitable for use in a wide range of vehicles including passenger cars, light commercials vehicles, motorcycles, trucks, buses, stationary engines and other equipment. Penrite Radiator Corrosion Inhibitor when mixed with water will help provide improved heat transfer abilities over straight water by reducing cavitation and eliminating hot spots inside the engine. This can help lower the running temperature of the engine, preventing damage from overheating whilst the inhibitor pack will prevent rust, corrosion, scaling and oxidation if maintained at the correct dosage. DOSAGE: Radiator Corrosion Inhibitor should be used at a ratio of 50ml per litre of water. Penrite recommend mixing with Penrite De-Mineralised Water 1 litre makes up to 20 litres of coolant. Penrite also offer a range of gear oils, transmission fluids, engine additives and so much more.

Penrite Radiator Corrosion Inhibitor - Protects against cavitation, scaling and oxidisation Penrite Radiator Corrosion Inhibitor Concentrate is a Type 'B', radiator corrosion inhibitor that protects against cavitation, scaling and oxidisation in vehicles that do not require a Type '' Anti-Freeze Anti-Boil coolant. It is an effective engine coolant that uses a Hybrid Organic Acid Technology (HOAT) inhibitor to provide maximum protection against corrosion whilst providing superior heat transfer to reduce engine operating temperature. Penrite Radiator Corrosion Inhibitor is suitable for use in a wide range of vehicles including passenger cars, light commercials vehicles, motorcycles, trucks, buses, stationary engines and other equipment. Penrite Radiator Corrosion Inhibitor when mixed with water will help provide improved heat transfer abilities over straight water by reducing cavitation and eliminating hot spots inside the engine. This can help lower the running temperature of the engine, preventing damage from overheating whilst the inhibitor pack will prevent rust, corrosion, scaling and oxidation if maintained at the correct dosage. DOSAGE: Radiator Corrosion Inhibitor should be used at a ratio of 50ml per litre of water. Penrite recommend mixing with Penrite De-Mineralised Water 1 litre makes up to 20 litres of coolant. Penrite also offer a range of gear oils, transmission fluids, engine additives and so much more.

Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020

Penrite Radiator Corrosion Inhibitor - Protects against cavitation, scaling and oxidisation Penrite Radiator Corrosion Inhibitor Concentrate is a Type 'B', radiator corrosion inhibitor that protects against cavitation, scaling and oxidisation in vehicles that do not require a Type '' Anti-Freeze Anti-Boil coolant. It is an effective engine coolant that uses a Hybrid Organic Acid Technology (HOAT) inhibitor to provide maximum protection against corrosion whilst providing superior heat transfer to reduce engine operating temperature. Penrite Radiator Corrosion Inhibitor is suitable for use in a wide range of vehicles including passenger cars, light commercials vehicles, motorcycles, trucks, buses, stationary engines and other equipment. Penrite Radiator Corrosion Inhibitor when mixed with water will help provide improved heat transfer abilities over straight water by reducing cavitation and eliminating hot spots inside the engine. This can help lower the running temperature of the engine, preventing damage from overheating whilst the inhibitor pack will prevent rust, corrosion, scaling and oxidation if maintained at the correct dosage. DOSAGE: Radiator Corrosion Inhibitor should be used at a ratio of 50ml per litre of water. Penrite recommend mixing with Penrite De-Mineralised Water 1 litre makes up to 20 litres of coolant. Penrite also offer a range of gear oils, transmission fluids, engine additives and so much more.

Penrite Radiator Corrosion Inhibitor - Protects against cavitation, scaling and oxidisation Penrite Radiator Corrosion Inhibitor Concentrate is a Type 'B', radiator corrosion inhibitor that protects against cavitation, scaling and oxidisation in vehicles that do not require a Type '' Anti-Freeze Anti-Boil coolant. It is an effective engine coolant that uses a Hybrid Organic Acid Technology (HOAT) inhibitor to provide maximum protection against corrosion whilst providing superior heat transfer to reduce engine operating temperature. Penrite Radiator Corrosion Inhibitor is suitable for use in a wide range of vehicles including passenger cars, light commercials vehicles, motorcycles, trucks, buses, stationary engines and other equipment. Penrite Radiator Corrosion Inhibitor when mixed with water will help provide improved heat transfer abilities over straight water by reducing cavitation and eliminating hot spots inside the engine. This can help lower the running temperature of the engine, preventing damage from overheating whilst the inhibitor pack will prevent rust, corrosion, scaling and oxidation if maintained at the correct dosage. DOSAGE: Radiator Corrosion Inhibitor should be used at a ratio of 50ml per litre of water. Penrite recommend mixing with Penrite De-Mineralised Water 1 litre makes up to 20 litres of coolant. Penrite also offer a range of gear oils, transmission fluids, engine additives and so much more.

$31.83 - $332.99

in 9 offers

The lowest price for Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020 right now is $31.83 at RG Enterprises, compared across 9 retailers.

The all-time low was $31.83 on 16 Oct 2026. That's the lowest price we've ever tracked — a great time to buy.

Prices last updated 16 Oct 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 16/10/2026 11:18:58

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=rgeaus.com.au&sz=64RG Enterprises

$31.83

PENRITE Rad Inhibitor 100,000 Km Conc, 500ML (Box of 3)

Delivery $18.95

https://www.google.com/s2/favicons?domain=automotivesuperstore.com.au&sz=64Automotive Superstore

$255.82

Penrite Green Radiator Corrosion Inhibitor Concentrate 20L COOL1020 fits Ford Bronco 5.8 AWD Petrol SUV 09/83-12/86 157kw

Delivery between 19–29 Oct $10.95

https://www.google.com/s2/favicons?domain=ozgeneralstore.com.au&sz=64Oz General Store

$294.00

Penrite Radiator Corrosion Inhibitor 100,000 Km (Green Concentrate) (3 Sizes Available) 20L

Delivery between Wed – Thu $15

https://www.google.com/s2/favicons?domain=checkout.4wd247.com&sz=644wd247.com

$304.00

Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020

Free delivery

https://www.google.com/s2/favicons?domain=4wh.com.au&sz=644wheelhouse

$305.99

1 x PENRITE RADIATOR CORROSION INHIBITOR 20L COOL1020

Delivery between 21–23 Oct $15

https://www.google.com/s2/favicons?domain=filtersplus.co&sz=64Filters Plus WA

$306.24

COOL1020 Filter by Filtersplus

https://www.google.com/s2/favicons?domain=repco.com.au&sz=64Repco Auto Parts Smithfield

$309.00

Penrite 100,000km Green Concentrate Corrosion Inhibitor 20L - COOL1020

Delivery $12

https://www.google.com/s2/favicons?domain=universalautospares.com.au&sz=64Universal Auto Spares

$310.00

Radiator Corrosion Inhibitor (Concentrate) - Penrite 20L

Delivery between 22–26 Oct $49.95

https://www.google.com/s2/favicons?domain=motoheaven.com.au&sz=64MotoHeaven

$332.99

Penrite Radiator Corrosion Inhibitor Green Coolant 20 Litre

Free delivery

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

Product TypeCoolant
Package Size20L
Protection ProvidedCorrosion protection
Additive FunctionCorrosion protection
Corrosion ProtectionProtects all internal surfaces from corrosion

Price comparison

Updated 7 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=rgeaus.com.au&sz=64
RG Enterprises

$31.83

PENRITE Rad Inhibitor 100,000 Km Conc, 500ML (Box of 3)

Delivery $18.95

https://www.google.com/s2/favicons?domain=automotivesuperstore.com.au&sz=64
Automotive Superstore

$255.82

Out of stock

Penrite Green Radiator Corrosion Inhibitor Concentrate 20L COOL1020 fits Ford Bronco 5.8 AWD Petrol SUV 09/83-12/86 157kw

Delivery between 19–29 Oct $10.95

https://www.google.com/s2/favicons?domain=ozgeneralstore.com.au&sz=64
Oz General Store

$294.00

Out of stock

Penrite Radiator Corrosion Inhibitor 100,000 Km (Green Concentrate) (3 Sizes Available) 20L

Delivery between Wed – Thu $15

https://www.google.com/s2/favicons?domain=checkout.4wd247.com&sz=64
4wd247.com

$304.00

Out of stock

Penrite Radiator Corrosion Inhibitor Concentrate 20L - COOL1020

Free delivery

https://www.google.com/s2/favicons?domain=4wh.com.au&sz=64
4wheelhouse

$305.99

1 x PENRITE RADIATOR CORROSION INHIBITOR 20L COOL1020

Delivery between 21–23 Oct $15

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Specification

Product TypeCoolant
Package Size20L
Protection ProvidedCorrosion protection
Additive FunctionCorrosion protection
Corrosion ProtectionProtects all internal surfaces from corrosion

You may also like

Penrite Radiator Corrosion Inhibitor Concentrate 500ml - COOL10005
Penrite Radiator Corrosion Inhibitor Concentrate 500ml - COOL10005$10.00 - $28.85
29
Compare 14 offers
Penrite 10 TENTHS Race Coolant Inhibitor Concentrate 1L
Penrite 10 TENTHS Race Coolant Inhibitor Concentrate 1L$21.90 - $153.54
43
Compare 44 offers
Penrite 7 Year 450,000km Green Coolant Concentrate 20L - COOLGREEN020
Penrite 7 Year 450,000km Green Coolant Concentrate 20L - COOLGREEN020$183.41 - $299.95
13
Compare 11 offers
Penrite Coolant Concentrate
Penrite Coolant Concentrate$44.42 - $82.65
Compare 36 offers
Penrite 7 Year 450,000km Green Coolant Concentrate Enviro Box 20L - COOLGREEN020BOX
Penrite 7 Year 450,000km Green Coolant Concentrate Enviro Box 20L - COOLGREEN020BOX$183.41 - $314.99
Compare 12 offers
Penrite OEM Coolant 20L
Penrite OEM Coolant 20L$128.10 - $242.95
Compare 7 offers