Castrol Variocut G 399 is a high-performance neat finishing oil designed for demanding grinding, honing and superfinishing operations. It is formulated with highly refined base oils and delivers excellent flushing and lubrication performance, dimensional stability and reduced drag-out.
Application Areas
- Suitable for: Grinding, honing and superfinishing on cast iron, low-alloy steels, high-alloy steels and nickel/chrome alloys.
- Not suitable for: Aluminium and non-ferrous metals, as no approvals are listed in the official Castrol application table.
- Important note: The exact approved combinations of workpiece material and machining operation must always be taken from the official Castrol product application table.
FAQ – Frequently Asked Questions
What is Variocut G 399 designed for?
For precision grinding, honing and superfinishing where maximum dimensional accuracy and surface quality are critical.
Can the product be used on aluminium?
No — aluminium and non-ferrous metals are not approved.
Why does it offer such good dimensional stability?
The refined base oil system provides excellent lubricity and thermal stability, minimizing thermal deformation.
