Senergy takes you to Lower Visco City

Fuel efficiency calculator

With Guardol FE, Class 7–8 fleets can save up to 1.5% on annual fuel costs, and Class 6 fleets can save even more – up to 2%.

Calculate what your fleet could save by switching to Phillips 66 Guardol FE.


Phillips 66® Guardol FE (Fuel Economy) Diesel Engine Oil with Liquid Titanium protection additive is a premium quality, part-synthetic API FA-4 engine oil developed for fuel economy benefits in 2014 and newer engines.

DD13 engine teardown at 900,000 miles on FA-4 10W-30dw

FA-4 Transit Van Fuel Economy Testing

DD13 Scuffing Test (ASTM 8074) Performance


Looking for your next career path. Senergy Petroleum is now hiring sales, operations, accounting, warehouse, and drivers. Fuel up, with team Senergy.

  • Shift Differential Pay
  • 401 (K) w/ Company Match
  • Medical, Vision, Dental Insurance
  • Paid Time Off
  • Long Term Disability
  • Tuition Reimbursement