Use Mobil 1 0W-20 EP(Extended Protection) HM(High Mileage) motor oil, only. Use Mobil 1 oil filter, or Fram Endurance filter. Reset the OLM as usual, but extend oil OCI intervals for you savings & convenience. Run the M1 0W-20 EP HM for 15k miles of 20k miles of Mobil marketed OCI. Can run in cars & trucks past one year Mobil marketed time, if cars & trucks are not short-hopped. Please note: even in Death Valley, California (130F max temp), a 0W-20 is the specified oil by Honda (look up GM) because the engine operates perfectly on it, with maximum HP, torque, & MPG. Typical warmed-up engine temps are already very hot at 195F to 220F, in all climates, and engine temp is always hotter than any outside temp, so there is no need for a "thicker" (more viscous) oil at any outside temp. A "thicker" oil reduces HP, torque, & MPG, and does not lubricate oem designed internal engine components any better than specified oil
Consider using Mobil 1 0W-20 EP(Extended Protection) HM(High Mileage) motor oil. Use Mobil 1 oil filter, or Fram Endurance filter. Reset the OLM as usual, but extend oil OCI intervals for your savings & convenience. Run the M1 0W-20 EP HM for 15k miles of 20k miles of Mobil quoted OCI. Can run in cars & trucks past one year Mobil quoted time, if van & trucks are not short-hopped. Please note: even in Death Valley, California (130F max temp), a 0W-20 is the specified oil by Honda (look up for GM trucks) because the engine operates perfectly on it, with maximum HP, torque, & MPG. Typical warmed-up engine temps are already very hot at 195F to 220F, in all climates, and engine temp is always hotter than any outside temp, so there is no need for a "thicker" (more viscous) oil at any outside temp or conditions. A "thicker" oil reduces HP, torque, & MPG, and does not lubricate oem designed internal engine components any better than specified oil.