Hey Guys,
I just had my 120k change oil last week, and I've noticed that my fuel consumption has gone up. I did not change my driving habit nor my daily route, and A/C is set at constant temp. Right now I'm getting ~13-14 mpg after the oil change, and previously I was at 17-19 mpg. What I noticed was that they installed a different oil filter, which is shorter in length than the previous one. I'm not sure what oil they used in my pathy but the receipt shows its a fully synthetic 5w-30 oil. What effect does a shorter oil filter do?
Any thoughts or ideas?
Thanks!