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From 1st July 2021 Rally Design will not be able to process orders to retail EU customers with a product value less than £135.00 (€150.00). Above €150.00 local customs may charge VAT, import duty and handling charge. Additionally postal operators and couriers may charge a fee to collect these charges. Please note, this does not apply to UK consumers or EU B2B customers. David Elderfield, Managing Director. Last Updated 01/07/2021.
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CB 40 For methanol fuels / where a castor oil is preferred


Competition castor engine oil. Highest quality castor oil with unique anti-oxidant system for enhanced performance.


All 4 stroke car or motorcycle engines which require a vegetable based oil. For use in engines running methanol or alcohol based fuels.

Note: Conventional mineral/synthetic lubricants are incompatible with Castor based oils.

User Benefits

  • Outstanding wear protection due to extra load-carrying additives and natural lubrication properties of Castor
  • Enhanced anti-oxidant performance

Millers Oils Part Number was previously: 5003GF


Your IP Address indicates that you are in the United States or Canada and we are currently unable to sell into those countries. If you do not reside in the United States or Canada then please e-mail your request directly to sales@rallydesign.co.uk quoting Ref: CATINFO/SG2/

PLEASE NOTE: All prices exclude VAT at 20%.
Where applicable, this is calculated and added during the checkout procedure.
This product was added to our catalogue on Saturday 08 November, 2014.
SAE Viscosity:  40
Specific Gravity (at 15C):  0.942
Kinematic Viscosity (at 100C, cSt):  14
Flash Point (C):  >200
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Rally Design Limited • Unit 4 St. Augustine's Business Park, Estuary Way, Swalecliffe, Kent, CT5 2QJ
Vehicle Identification: References to vehicle marques such as Ford, Vauxhall, Westfield, Caterham etc. are for vehicle fitment identification purposes only.
These references must not be used to imply the vehicle manufacturers have been involved in the design of these products nor endorsement of same.
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