Where V - the engine oil capacity P – usable fuel k – the coefficient taking into account the wear of the piston group (k for diesel cars is 1.25 for gasoline cars is 1.15 for turbo cars is 1.3).įor passenger vehicles, the standard rate of burning is 0.005 - 0.025% per 100 liters of fuel, which ranges approximately from 5 to 25 grams of oil per 1 thousand km. The consumption of the filled oil in liters per 100 liters of fuel is determined as follows: Where ∑q - the oil filled up during a cycle (between maintenance periods) Qз - the oil filled when refueling Qсл – the oil drained during the replacement. The total actual oil consumption through burning per a cycle of its operation (from replacement to replacement) can be calculated by the following formula: Calculation formulas of oil consumption rate It involves the calculation of the permissible amount of oil consumption through burning according to the type of engine, the volume of operating oil and the amount of the consumed fuel, taking into account the state of the piston group. To find out the rate of oil consumption in the engine of your car, you need to employ the calculation formula and calculator, or use this online form. Engine oil consumption is usually calculated based on its volume consumed for burning of 100 liters of fuel. This figure is more accurate than the traveled distance, because when you stand in traffic jams, the oil is consumed even more, but the odometer does not change its value. To determine the rate, it is not the mileage that is taken into account, but the fuel resource consumption. How engine oil consumption rate is calculated Everything depends on the specific numbers and additional symptoms that may occur during the burn of lubricating fluid.

Excessive consumption of engine oil can indicate its poor quality (lubricant burns excessively) or engine fault (in most cases, there is leakage through valve stem seals and oil scraper rings). Engine oil consumption is determined depending on the amount that burns in the engine.

Oil consumption