Because diesel fleets run year-round, maintenance supplies can't wait for seasonal downtime. This October, Pak Petroleum Marketing is offering specials on Chevron Delo 400 XLE 15W-40 synthetic blend engine oil and Mystik JT-6 Hi-Temp Red #2 Grease. Stock up now while pricing is reduced and before end-of-year schedules tighten. Diesel Engine Oil for Mixed Fleets Chevron Delo 400 XLE 15W-40 is a synthetic blend heavy-duty diesel engine oil that protects mixed fleets across vari