Goldenstone® GMK natural gas engine oils are formulated from a special selection of high quality solvent refined and hydrotreated paraffinic-naphthenic base stocks blended with an advanced technology additive package that provides exceptional oxidation stability, nitration resistance and thermal stability.

Goldenstone® GMK oils are designated for lubrication of present medium to high speed four-stroke stationary gas engines burning natural gasses and used in power generation or operated as compressors for natural gas transportation through pipeline transportation systems.


• Excellent protection of valve train components
• Reduce level of combustion chamber ash
• Cleaner engines
• Longer oil and filter service