Hi Scotty and the community, Today I have a confusing issue with my car. My Toyota Allion 2015 (1NZ-FE engine). Recently I changed engine oil from 20w50 to 5w30 and cleaned the throttle body. I…

Raian

Hi Scotty and the community, Today I have a confusing issue with my car. My Toyota Allion 2015 (1NZ-FE engine). Recently I changed engine oil from 20w50 to 5w30 and cleaned the throttle body. I thought I will get better gas milage. Besides winter has arrived. Now I feel I drain more gas than previous. Even though I see my milage is 2-3.5km more on the dashboard than the summer time. But still I feel I drain more gas. What could be the issue or there is no issue? Thanks in advance :)