Dipstick wrong?
 

I did an oil change on my 951 last night in prep for an HPDE this weekend. I added 6 quarts, took it for a test drive and let it sit for 15 minutes. When checked the oil was just under the lower mark on the dipstick. I added a quart and now its spitting oil out the exhaust (I'm pretty sure my turbo seals are bad). Isn't the oil capacity 5.8 quarts? Is it possible for the dipstick to read wrong?

OK, I found my own anwer - checked the Turbo supplement to the factory manual set and oil capacity is "approx 6.5 ltr. with filter" which is ~6.9 quarts.