Discussion on the influence of driving parameters of civilian cars on motor oil degradation

Abstract

Although the reason is not clear, mileage is commonly recommended as an indicator to evaluate the oil drain interval of a car. This paper tries to investigate whether the mileage is the most suitable indicator to evaluate the oil drain interval based on scientific experiments and data analysis method. Three civilian cars and motor oils (contained mineral oil, semisynthetic oil, and synthetic oil) were subjected to road tests under urban traffic condition. The real-time driving parameters comprising speed, mileage, idle time, engine operation time, and number of starts were obtained by on-board diagnostic system. Synchronous oil samples were collected about every 30 days. The physicochemical properties and component changes of experimental oils were analyzed in laboratory. The effects of driving parameters on oil properties were studied with the improved grey relational analysis method. The results show that the influencing factors of driving parameters on motor oil degradation were different in different experimental cars. The influence of mileage on oil degradation was not obvious. The idle time of engine, engine operation time, and number of starts were the three most significantly influential factors on oil deterioration after comprehensive analysis of the three experimental cars.

Essential Preventive Automobile Maintenance during a Pandemic

“…Although difficult conditions are not explicitly stated, they involve city driving and short distances. The parameters that affect the correction of the replacement interval are stated in [21]. The increase in the replacement interval is due to the need to reduce maintenance costs and ecological footprint of an oil change.…”

Study of the Effect of Physicochemical Degradation and Contamination of Motor Oils on Their Lubricity

“…The components used in the manufacture of motor oil are the base oil(s) and the polymeric and solid viscosity modifier dissolved therein, and chemical additives, which impart performance properties to the motor oil [4][5][6].…”

Acid activation of bentonite clay for recycled automotive oil purification

“…Motor oils play an important role in the operation and performance of a vehicle, being one of the products in greatest demand. From 1991 to recent years, the annual global demand for lubricants has remained around 35 million tons [1]. Until 2015, the growing demand from emerging markets such as Brazil, Russia, India and China have led to a 2.6% increasing in demand for lubricating oils [2].…”

“…The increasing motor oil demand combined with the decreasing petroleum availability (67 L of petroleum are required to produce 1 L of motor oil) require that UMO be reused (1.6 L of UMO is necessary to obtain 1 L of motor oil). In addition, UMO needs to be purified because is considered a dangerous waste (1 gal of UMO could contaminate 1 million gallons of drinking water) due to the presence of dust, heavy metals, polycyclic aromatic compounds (PAHs), polychlorinated biphenyls (PCBs), among others [1,[3][4][5].…”