Mine was same. Showed full, drove it, checked it 2 days after, showed around bottom hole in dipstick, added 1/3 quart, wen't to between bottom hole and top. When warm its barely to 2nd hole... Not sure how accurate these Subby dipsticks may be but take a look at this thread:
Here Buddy
BLAH!!! I'll look at the manual tomorrow. Too drunk top read, now.