Exxon Mobil announced Dec. 1 a new lineup of Mobil Delvac heavy-duty engine oils that meet the specifications of the new generation CK-4 and FA-4 engine oils, which are designed to boost fuel economy and increase oil drain intervals.
Exxon Mobil announced Dec. 1 a new lineup of Mobil Delvac heavy-duty engine oils that meet the specifications of the new generation CK-4 and FA-4 engine oils, which are designed to boost fuel economy and increase oil drain intervals.