Method for determining the times when it will be necessary to change, or add to, the engine oil in a motor vehicle engine

A method for determining engine oil servicing dates for a motor vehicle engine as a function of recorded engine operating parameters, comprising:

• continuously recording engine revolutions and at least one engine operating parameter relevant to engine oil ageing;
• determining a fictitious distance (dSi) by associating the recorded engine revolutions with evaluation factors (BT, Bn, BL) dependent on the at least one engine operating parameter relevant to engine oil ageing in accordance with a predeterminable association relationship;
• and
• calculating a remaining operating distance (SR) until a next engine oil servicing date by subtracting the determined fictitious distance from a predetermined total distance potential (SG).

A method for determining engine oil servicing dates for a motor vehicle engine as a function of recorded engine operating parameters comprising:

• continuously recording engine revolutions and at least one engine operating parameter relevant to engine oil ageing;
• determining a fictitious distance (dSi) by associating the recorded engine revolutions with evaluation factors (BT, Bn, BL) that are dependent on the at least one engine operating parameter relevant to engine oil ageing in accordance with a predeterminable association relationship;
• predetermining a total distance potential (SG) as the product of a permanently predeterminable original distance potential (Su) and one or more of:
• quality factors (Qi), oil change or oil top-up factors (FW, FN), the oil change or oil top-up factors being determined as a function of respective oil change quantity or oil top-up quantity;
• and
• calculating a remaining operating distance (SR) until a next engine oil servicing date by subtracting the determined fictitious distance from the predetermined total distance potential (SG).