I am not good at converting to the metric system, but as close as I can estimate, there is a chance you do not actually have a problem. All engines today do use some oil between oil changes, and to address the numerous complaints, dip sticks no longer say "Add" and "Full". Now they are marked, "Min" and "Max". As long as the level remains above the "Min" mark, there's no need to add. Some mechanics just put in enough oil at the oil change to get it to the "Min" mark, so you can expect it to read low before the next oil change. It should be filled closer to the "Max" mark during the oil change.
If that does not solve the issue, consider adding a small bottle of dark purple dye to the oil, then check a few days later with a black light. The dye will show up as a bright yellow stain that you can follow back to the source. If it is burning in the engine, you will find the dye inside the tail pipe.
Auto parts stores will have the dye for the fluid being tested. Those that rent or borrow tools should have a black light.
Friday, May 19th, 2017 AT 8:04 PM