Hi! My car is 1996 Subaru Legacy L AWD. I find resently the MPG of my can is very low(~15MPG). It should have a MPG of 22 in local and 27 on high way. I drive mostly in local. I have this car from Aug. 2006. I changed the oil on Aug.29, 2006, and have ~2,500 miles on it. Is the low MPG caused by the oil or the low temperature in winter? Should I change the oil every 3 month or every 3,000 miles?
Tuesday, March 13th, 2007 AT 2:40 PM