Is it a good idea to move from Synthetic oil to normal oil ?

[tmontague]

Subthetic oil tends to leak/burn more in an old engine as it is thinner at cold temps and flows better into small spaces even if viscosity is identical. If you want the synthetic oil for cold starts then go with a 0w40 instead of a 0w30. Based on your location I dint think your concern is cold start so just switch back to a conventional oil or go to a thicker viscosity

[ojeysky]

Originally Posted by tmontague

Subthetic oil tends to leak/burn more in an old engine as it is thinner at cold temps and flows better into small spaces even if viscosity is identical. If you want the synthetic oil for cold starts then go with a 0w40 instead of a 0w30. Based on your location I dint think your concern is cold start so just switch back to a conventional oil or go to a thicker viscosity

Yeah I have no issue with cold start; lowest temperature here is 20C and that is occasional (it's usually above 30C), so what viscosity do you recommend I go for? By the way I was using 20w50 before but noticed performance improvement since I switched to synthetic 5w30 except that I loose oil. So what viscosity of conventional or synthetic should I switch to without loosing much performance and fuel economy?