13th Jun 2012, 18:13
I have the same car. I purchased it new, and after only 2 to 3 years after buying it, I have had to add oil before the oil change was due. I have always kept up with oil changes, but it doesn't make sense to me that I have to add oil.
30th Dec 2011, 00:24
I too have a 2005 300 with the bigger V6 that uses a quart of oil every 1500 miles. It has 50,000 miles on it and is well cared for.