When 5.8 really equals 6.25

[Itzed]

Did my first oil change on the BRZ today at 5,909 miles. Will probably change again at 10,000 miles, and settle into 5000 mile intervals afterwards. By the time I checked my oil level for the first time on the car, it was just slightly below the second hole (full mark) on the dipstick. I figured it might be burning a little, since it's new, but it never changed after that. So I put in about 5.8 quarts today, and what do you know, it's right below the second hole again. I added what was necessary to get it right to the full mark and it turned out to be about 6.25 quarts. I assume they probably measure out 5.8 quarts at the factory during initial fill. So I wonder if it really needs 6.25, or if I just got a short dipstick (setting myself up with that one). My garage is level, and the dipstick was all the way pushed in. What have others found?

[Akari]

What is your procedure for filling and checking? I've found it takes a good heating up and 30+ minute wait period before all my oil is back down in the pan.

[Itzed]

I've checked it cold in the morning, and warm after a drive. The oil expands a little when hot, but not much in this car. My previous 2.5 boxer was worse, or maybe the oil was more susceptible to expansion. FWIW, I had two BMW 3 series cars simoutaniously at one point, both with the 2.5 six, both calling for the same amount of oil, and one consistently took almost a full quart more to get to the full mark on the dipstick. Maybe my local Walmart siphons oil out of some of the 5 gallon jugs before I buy it. ��

[Black Tire]

Mine seems to use about 5.3 quarts at oil change time. See this thread that I started:

http://www.ft86club.com/forums/showthread.php?t=11734

A gallon is 4 quarts, are you sure you didn't put in a gallon + 1.25 quarts = 5.25 quarts?

[Itzed]

Nope, five quart jug, then a little more than another quart.