A grease made from petroleum should not be used at temperatures in excess of 400⁰F unless it is being changed every hour or two.

Question

Quizplus · Accepted Answer

Petroleum-based greases typically have a maximum operating temperature much lower than 400°F. Most can operate effectively up to approximately 250°F to 300°F. The statement about changing the grease every hour or two at temperatures in excess of 400°F does not align with standard practices for the use of petroleum-based greases.

A Grease Made from Petroleum Should Not Be Used at Temperatures