on my 2010 with 97,000-
I get small amounts of oil in the intake tube. About a spoonful every 5000 miles.
My oil change intervals- are 5000 miles (50% OLM) using Valvoline 5W-30 conventional oil.
I have always measured the oil that comes out.
5.5 qts in (with new filter).... and Ive drained out
5
4.5
4.75
5.25
etc....
Knowing that the engine uses varying amounts of oil over 5000 mile intervals-- and it seems that its dependant on the type of driving I did (city vs highway).
When I put in new oil- I always look at the FULL mark.
The Full mark for my engine is actually much higher than the FULL mark on the dipstick.
I Now add oil over the 5000 miles to keep the oil level up towards the full mark.
The oil I end up adding is anywhere in the 0.5 to 1 qt amount.
Examples.
4287 miles on this oil-
drained out 4.8 qts (out of 5.5).
Dipstick shows FULL.
This is what the dipstick registered at-- when I drained out 4.5 qts.
the 'REAL' Full level--