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- 12%
Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001
Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001
Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001

Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001

Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001

$38.49

(6 reviews)

For Petrol / E10, Racing vehicles. 10 Tenths Race Castor is an ashless SAE 20W-40 engine oil manufactured from high quality castor vegetable oil, synthetic ester, anti-corrosion additives and an advanced anti-oxidant. This helps to reduce or eliminate traditional problems such as lacquers and deposits 10 Tenths Race Castor is also recommended for classic two and four stroke engines where the owner wishes to use a Castor based oil rather than mineral based oil. It is also suitable for use where monograde SAE 30 and SAE 40 Castor based products are used or recommended. This product may also be used as a premix in two stroke applications with both petrol & methanol fuels. 10 Tenths Race Castor contains corrosion inhibitors to combat potential problems with excess moisture being present when running on methanol. 10 Tenths Race Castor is suitable for use in two stroke engine premixes. It can be mixed with fuels such as unleaded and leaded petrol, E85, Avgas, Methanol and Racing Fuel. Due to a limited storage life, product should be mixed just prior to use. Please establish compatibility and stability before attempting to use in engine. Note Do not mix Race Castor Oil with mineral oils.

For Petrol / E10, Racing vehicles. 10 Tenths Race Castor is an ashless SAE 20W-40 engine oil manufactured from high quality castor vegetable oil, synthetic ester, anti-corrosion additives and an advanced anti-oxidant. This helps to reduce or eliminate traditional problems such as lacquers and deposits 10 Tenths Race Castor is also recommended for classic two and four stroke engines where the owner wishes to use a Castor based oil rather than mineral based oil. It is also suitable for use where monograde SAE 30 and SAE 40 Castor based products are used or recommended. This product may also be used as a premix in two stroke applications with both petrol & methanol fuels. 10 Tenths Race Castor contains corrosion inhibitors to combat potential problems with excess moisture being present when running on methanol. 10 Tenths Race Castor is suitable for use in two stroke engine premixes. It can be mixed with fuels such as unleaded and leaded petrol, E85, Avgas, Methanol and Racing Fuel. Due to a limited storage life, product should be mixed just prior to use. Please establish compatibility and stability before attempting to use in engine. Note Do not mix Race Castor Oil with mineral oils.

(6 reviews)

For Petrol / E10, Racing vehicles. 10 Tenths Race Castor is an ashless SAE 20W-40 engine oil manufactured from high quality castor vegetable oil, synthetic ester, anti-corrosion additives and an advanced anti-oxidant. This helps to reduce or eliminate traditional problems such as lacquers and deposits 10 Tenths Race Castor is also recommended for classic two and four stroke engines where the owner wishes to use a Castor based oil rather than mineral based oil. It is also suitable for use where monograde SAE 30 and SAE 40 Castor based products are used or recommended. This product may also be used as a premix in two stroke applications with both petrol & methanol fuels. 10 Tenths Race Castor contains corrosion inhibitors to combat potential problems with excess moisture being present when running on methanol. 10 Tenths Race Castor is suitable for use in two stroke engine premixes. It can be mixed with fuels such as unleaded and leaded petrol, E85, Avgas, Methanol and Racing Fuel. Due to a limited storage life, product should be mixed just prior to use. Please establish compatibility and stability before attempting to use in engine. Note Do not mix Race Castor Oil with mineral oils.

For Petrol / E10, Racing vehicles. 10 Tenths Race Castor is an ashless SAE 20W-40 engine oil manufactured from high quality castor vegetable oil, synthetic ester, anti-corrosion additives and an advanced anti-oxidant. This helps to reduce or eliminate traditional problems such as lacquers and deposits 10 Tenths Race Castor is also recommended for classic two and four stroke engines where the owner wishes to use a Castor based oil rather than mineral based oil. It is also suitable for use where monograde SAE 30 and SAE 40 Castor based products are used or recommended. This product may also be used as a premix in two stroke applications with both petrol & methanol fuels. 10 Tenths Race Castor contains corrosion inhibitors to combat potential problems with excess moisture being present when running on methanol. 10 Tenths Race Castor is suitable for use in two stroke engine premixes. It can be mixed with fuels such as unleaded and leaded petrol, E85, Avgas, Methanol and Racing Fuel. Due to a limited storage life, product should be mixed just prior to use. Please establish compatibility and stability before attempting to use in engine. Note Do not mix Race Castor Oil with mineral oils.

$38.49 - $897.00

in 53 offers

The lowest price for Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001 right now is $38.49 at Autobarn, compared across 35 retailers.

The all-time low was $13.31 on 14 July 2025 — today's price is 189% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 6 Nov 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 06/11/2026 18:12:01

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

$38.49

Penrite 10 Tenths Race Castor 20W-40 Full Synthetic Engine Oil 1L, RCAS001

Delivery between 13–16 Nov $15

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

$40.40

Penrite 10 TENTHS 20W40 Race Castor Oil 1L RCAS001

Delivery between 9–19 Nov $10.95

https://www.google.com/s2/favicons?domain=askmate.com.au&sz=64MATE: Mobile Auto Tech Expert

$43.00

Penrite 10 TENTHS Race Castor Oil 20W-40 1L

Delivery between 12–20 Nov $15

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

$43.90

Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001

Delivery $12.50

https://www.google.com/s2/favicons?domain=eziautoparts.com.au&sz=64Eziauto Parts & Accessories

$43.90

Penrite 10 Tenths Race Castor Oil Full Synthetic 20W-40 1L - RCAS001

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

$44.00

RCAS001 Filter by Filtersplus

https://www.google.com/s2/favicons?domain=nippon-performance.com.au&sz=64Nippon Performance

$45.95

Penrite 10 Tenths Full Synthetic Race Castor 2 Stroke Oil 1L

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

$46.00

Penrite 10 Tenths Full Synthetic Race Castor 2 Stroke Oil 1L

Delivery between 12–20 Nov $14.99

https://www.google.com/s2/favicons?domain=autopartsandbatteries.com.au&sz=64Port Kennedy Auto Parts & Batteries

$46.90

Penrite Race Castor Oil 20W-40 Syn. RCAS001

https://www.google.com/s2/favicons?domain=999autoshop.com.au&sz=64999autoshop.com.au

$46.99

Penrite 1L 10 Tenths RACE Castor Oil 20W-40 Two-Stroke Rotary Rx7 Rx5 13B

Price history

Price history

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

Reviews

Best Premix for Rotaries
12 March 2023jamiemac2453

originally posted on ebay.com

Blends beautifully with E85

Excellent product and protection for your motor
7 December 2020mats

originally posted on repco.com.au

I brought this to run in my chainsaw and other small engines. it offers the best protection for your motor, smells great and is priced reasonably although getting on the high side but worth it.

Quality oil
12 February 2023Richard R

originally posted on autobarn.com.au

Quality race Castor oil. Used for 2 stroke karts and performs well

Specification

ViscositySAE 20W-40, 15.25 cSt (at 100°C), 160 cSt (at 40°C), 95 (Viscosity Index), SAE 30
Form ConfigurationLiquid, Oil
FormLiquid
MaterialSynthetic ester, Castor vegetable oil
Intended UseAutomotive, Lubrication

Price comparison

Updated about 11 hours 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=autobarn.com.au&sz=64
Autobarn

$38.49

Penrite 10 Tenths Race Castor 20W-40 Full Synthetic Engine Oil 1L, RCAS001

Delivery between 13–16 Nov $15

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

$40.40

Penrite 10 TENTHS 20W40 Race Castor Oil 1L RCAS001

Delivery between 9–19 Nov $10.95

https://www.google.com/s2/favicons?domain=askmate.com.au&sz=64
MATE: Mobile Auto Tech Expert

$43.00

Penrite 10 TENTHS Race Castor Oil 20W-40 1L

Delivery between 12–20 Nov $15

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

$43.90

Penrite 10 TENTHS Race Castor Oil 20W-40 1L - RCAS001

Delivery $12.50

https://www.google.com/s2/favicons?domain=eziautoparts.com.au&sz=64
Eziauto Parts & Accessories

$43.90

Penrite 10 Tenths Race Castor Oil Full Synthetic 20W-40 1L - RCAS001

Price history

Price history

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

Reviews

Best Premix for Rotaries
12 March 2023

Blends beautifully with E85

jamiemac2453 originally posted on ebay.com
Excellent product and protection for your motor
7 December 2020

I brought this to run in my chainsaw and other small engines. it offers the best protection for your motor, smells great and is priced reasonably although getting on the high side but worth it.

mats originally posted on repco.com.au
Quality oil
12 February 2023

Quality race Castor oil. Used for 2 stroke karts and performs well

Richard R originally posted on autobarn.com.au

Specification

ViscositySAE 20W-40, 15.25 cSt (at 100°C), 160 cSt (at 40°C), 95 (Viscosity Index), SAE 30
Form ConfigurationLiquid, Oil
FormLiquid
MaterialSynthetic ester, Castor vegetable oil
Intended UseAutomotive, Lubrication

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