Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is to lubricate moving parts; it also cleans, inhibits corrosion, improves sealing, and cools the engine by carrying heat away from moving parts.


 
    


 
    


 
    
 
    




 
    

![[WA] Valvoline XLD Premium 15W-40 Engine Oil $19 in-Store @ Big W, Joondalup](https://files.ozbargain.com.au/n/61/902561.jpg?h=dc860a42)


 
    

