There are several possible scenarios. Check emission control systems, the large vacuum tube that comes from engine to intake--look for evidence of oil pooling. Although this car probably has a factory recommendation to use 5-30 oil, after 8 years (and especially in warmer weather) I would recommend a thicker grade and see if your consumption changes. A compression check may reveal internal motor issues, but engines can also have good compression with the oil rings become on the pistons, resulting in glazed cylinder walls and high oil consumption. So you can try a couple of things yourself, visual inspection and thicker oil. Good luck
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Thursday, April 30th, 2009 AT 1:27 PM