CASTROL VARIOCUT G 399

Why Choose Castrol?

As part of Castrol’s Variocut range, G 399 sits as a specialist product designed for finishing operations where surface quality and dimensional control are prioritised. Variocut G 399 is a chlorine and heavy-metal free, low viscosity neat cutting oil designed for ferrous materials, including cast iron and a wide range of steels. It contains additives that enable high surface finish and the highest possible performance in terms of lubrication properties during operation. This supports extended grinding wheel and honing stone life while helping achieve smooth surface finishes and tight dimensional tolerances.

Castrol Variocut G 399's low viscosity and strong wetting behaviour reduce drag-out from components, which can lower overall fluid consumption and support cleaner machine operation over time. The oil also demonstrates good oxidation stability and filtering behaviour, which contribute to a longer service life in use and stable performance during extended production runs.

In terms of physical characteristics, Castrol Variocut G 399 has a low viscosity that supports high-speed finishing operations, and is a light and free-flowing finishing oil within the wider Variocut range. Because the product contains active sulphur to enhance its performance on ferrous materials, it is not suitable for use on yellow metals such as bronze or brass. Material compatibility should always be checked before introducing the oil into a new process or application.

Why Choose Broughton Lubricants?

If you need a chlorine and heavy metal-free, low viscosity neat cutting oil that meets high finishing demands and offers excellent flushing and lubrication, Broughton Lubricants can help you to find the perfect product for a range of applications. Our technical teams can provide practical support based on your specifications, drawing on decades of experience and our reputation for excellent customer service for over 100 years in the industry.

Thanks to our position as the UK’s only Castrol Ambassador Distributor for both the industrial and automotive product lines, we are well placed to help identify the most appropriate Castrol solution for your application. Our longevity means that when products are discontinued, replaced, upgraded or rebranded, we can help you to source a direct replacement or a suitable alternative.

For guidance on selecting the most suitable neat cutting oil for your machining process or for advice on replacements for discontinued products, contact Broughton Lubricants. Call us today on 03300 555 655 or use our online enquiry form to request a call back at your convenience.