Will switching from 5w40 to 5w30 cause oil burning?
1 Answers
Switching from 5w40 to 5w30 will not cause oil burning if your car's engine allows the use of 5w30 oil. However, if your car's engine does not permit the use of 5w30 oil, oil burning may occur. Difference in viscosity: The viscosity of 5W-30 and 5w-40 oils is different, with 40 being slightly higher, meaning 40 has higher oil consumption. Difference in low-temperature performance: 5w-30 performs better at low temperatures because its viscosity is significantly better than 5w-40 under low-temperature conditions. Difference in high-temperature performance: Under high-temperature conditions, 5-40 offers better stability.