Originally Posted by Blondie50

Hi Guys,
I have an issue with the amount of oil to put into my engine. I have a 2007 Limited Roadster with the standard 3.2 engine. My concerns are that after the last oil change I replaced 8.5 quarts of the proper Mobil 1 and now notice that the dip stick is showing about 1" above "max" full line. This time as I did my oil change I took notice to how much oil I removed and it was apprroximately 8.2 quarts. I used an evacuator thru the dip stick tube making sure I got out as much as possible. I changed the filter and got everything back together. Now I started to put in my new oil. I stoped at 7 quarts and checked the level with the dip stick. It showed full to the "max" marking on the stick. I started the engine to allow whatever oil would be taken into the filter and let it run for about 10 minutes and shut it off. I let it sit over night and this morning I checked the oil again and saw that it is now reading about 1/2 quart under the "max" mark. I added about 1/2 quart to bring the oil back up to the "max" mark. Now here is my question: Why did it only take 7.5 quarts when the book says 8.5 quarts? Do you think there may be an issue with my dip stick? I measured the length of the stick and it is 21 1/2" from bottom tip to the top flange (where the the plastic flange of the dip stick comes in contact with the tube.) Can anyone confirm that my measurement is what it should be? I do not want to put the last quart of oil in as long as it reads full on the dip stick. Your thoughts please...