Bought an oil filter today to do oil change
        
 I thought it to be quite expensive at R 180.00 (south african rand)
        
 The previous filter I got, was way much cheaper at R 90.00, but it might have been a non genuine filter
        
 Do they do the same job?
        
 I like to change oil every 7 000 km, more or less
        
 Using Liqui Moly