Corrosion Preventatives

Castrol Rustilo 181
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Solvent based corrosion preventive


Castrol Rustilo 181 is a dark brown solvent deposited corrosion preventive fluid which, after evaporation of the solvent, gives a hard waxy yet flexible film.


Rustilo 181 is a long term protective for use in severe conditions where a high degree of protection is required. It is ideal for protection of to certain engine spares such as fuel injector nozzles, fin tubes and similar highly finished parts prior to long-term storage or transportation. Rustilo 181 used to be applied by immersion, brush or spray.

  • Contains a powerful corrosion inhibitor package suitable for severe conditions – provides reliable protection of components
  • Good mechanical film strength and finger print suppressing properties – highly finished work not damaged by handling improves product quality
  • Long bath-lifetimes possible – increases changing intervals and hence reduces operational cost
  • Easy to apply and short drying time – enables high level of productivity
  • Free from heavy metals, such as Barium – improves environmental profile and helps reducing waste disposal cost.
Metal type Cast Iron, High alloy steel / Stainless steel, Low / Med alloy steel
Corrosion protection Severe Conditions
Formulated without Heavy Metal Yes
Product type Surface Treatments
Applicable to these sectors Automotive Manufacture, Machinery, Metal Goods, Metals
  • The claims on film thickness and consumption are average values. These are valid for smooth surfaces with good drain-off characteristics and simple geometries without holes or recesses.
  • Average drying time is the time until the majority of the solvent is evaporated at ambient temperature and a relative humidity of 60 – 70%. The full corrosion protection will just be provided when the solvent is completely evaporated.
  • “Indoor storage” describes the storage of ferrous components in closed store-rooms having a relative humidity of 60%. Increased protection times could be achieved when treating finished surfaces or store the parts in a sealed pack.
  • “Outdoor storage” describes open storage, which assumes primary protection from the elements by tarpaulin or other form of cover.
  • Influence of temperature may cause some cloudiness, which is reversible and doesn’t have an impact on product quality.
  • If required protective films of Rustilo 181 can be removed by using a petroleum solvent or alkaline process cleaner, all available from Castrol.

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