Conventional high pressure lubricant additives contain short chain chlorinated paraffins which are toxic and also harmful to the environment. Environmentally friendly high pressure lubricant additives are provided by combining 74.5 wt% to 84.5 wt% chlorinated alkanes such as PAROIL 310 NR or PAROIL 353 NR with 15.5 wt% to 25.5 wt% mineral oil. The high pressure lubricating oil additive may be added to engine oil or other lubricating oils such as hydraulic fluid, cutting oil, gearbox oil, automatic transmission fluid, and penetrating oil
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