carlosian

I have a 2005 civic with 55k miles on it. I've used 5w 20 oil as indicated by Honda when I first bought the car (with 11k miles). I noticed back then the transmission used to **** harder and sometimes the engined idled when changing gears. I started using 10w30 oil and the problem stopped. I recently went back to 5w20 synthetic oil, after reading countless articles on sticking with the manufacturer's suggestion on oil types. After l changed it back to 5w20, I noticed the same issue as before. Is this a common issue? What type of oil to you guys use on your 7th gen civics?

thanks

lowlife9

they onley recommend 5w20 because it gives better mpg.i use 5w30 amsoil synthetic.

carlosian

what's the difference between 5w20, 5w30 and 10w30?


what would happened if I go back to 10w30 or try 5w30?

BlueEM2

iTrader: (1)

It's all thickness. 5W20 is thinner than 5w30 or 10w30. I would stick with 5w30 and don't go any thicker. 10w30 is too thick.

gearbox

iTrader: (95)

i switched to 5w30 after the engine got over 60k miles. it wears in and tolerances get looser, so you really need a thicker oil. 5w20 is just too thin if you live in warm climate.

unTuned

at about 70k miles i also started using 5w30 instead of the recommended 5w20. i use fully synthetic penzoil 5w30.