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Thanks.

Nothing like that. Its weird.

Hi I bought a 2010 Chevy Cobalt about a year ago. The car has rebuilt title. Yesterday the check engine light went on and I went to get it checked out at Oreilles and P0700 Transmission Control System Malfunction code spat out. Is there anyone that can help me figure out how to fix this? I am...

Originally Posted By: Dimitri Originally Posted By: Finz Just to confirm: Last 2 fill ups produced 19.x MPG vs 23 MPG and the only change has been a switch from Valvoline dino at dealer to PU 5w-30? That and winter gas since probably Sept? I don't see how either of those, alone or combined...

Originally Posted By: Finz Just to confirm: Last 2 fill ups produced 19.x MPG vs 23 MPG and the only change has been a switch from Valvoline dino at dealer to PU 5w-30? That and winter gas since probably Sept? I don't see how either of those, alone or combined, could contribute to a near 20%...

I filled up numerous times. About 8 full fill ups. They both are at 19mpg. Any thoughts?

Hey everyone so I ended up switching to PU 5w-30 with the oem oil filter. I had a sudden drop in overall mpg. It went from 23.5mg to 19.5mpg. Any ideas as to why would there be such a drastic drop?

Is the PU 5w30? Sorry for a dumb question have to make sure which one to use? Also would you mind what filter do you use that is relatively cheaper? and better in quality?

Guys thank you for the tips. It is greatly appreciated. This def helps out a lot.

Well my warranty expired couple months ago so its time for a switch :)I think I might give a Pennzoil Ultra oil a try. whats the interval for that? Also is it okay to use the oem filter with this oil? Thanks

Thanks for the tips. They are very helpful. As far as the oil goes they said they use the Valvoline 5w-30 and its not synthetic. Would you guys suggest I stick with this until the warranty expires? Or should I make the switch to using the Mobil 1 Extended Performance oil, Pennzoil Ultra. Also...

Hey guys I am fairly new to this website. I recently bought myself a new car couple months ago. I used to drive a 4 cylinder Camry until it died I wanted wanted something faster so I bought myself an Infiniti G37 coupe rear wheel drive and its automatic 7 speed. Its a 2009 with 12,000 miles...