i also use the Mobil 5W30 & M102 filter and to take my truck to fill mark it takes 7 complete quarts and has done so on every oil change i have done and i change it in same place which is level and i have checked it afterwards in other locations and it is just to fill mark!! I called Toy Socal and asked them what the marks on the 06 D/C were for and was told they represent 1.5 Qts, the area between the 2 dots!! i have seen all kinda small errors in manuals on quantitys and not just on the tundra!! my 93 PU has errors also, nothing big just when ya drain and refill it seems the numbers are off a tad as in Differentials, transfer cases and yes even engine oil!!7 qts??????? How is that working for you? I stick with the manual and add 6.5 qts with oil filter. Besides the factory oil, the only thing that goes in my truck is Mobil 1 synthetic and it doesn't use a drop between oil changes.
I am perplexed why a new truck would use a full Qt of oil in 1 oil change cycle and that not be an issue? how long are your oil cycles as if that should matter? If the truck was 12 to 14 years old with 250K on it i would not see that 1 qt during an oil cycle would be an issue but you are talking about your 2006? v6?v8? you have a problem if a new truck is using that much oil in 3K to 5K miles!!On my last oil change I used right at 1qt over 4k of highway driving so I'm satisfied.