To avoid such problems, SK Lubricants should arrange delivery of products through their own sales network instead of using local courier services. What if the courier replaces the original product with a fake one, how the customer will come to know that he is getting the original product? In my case, when i ordered ZIC M5 - 1 Liter last month; i got the package (SK Lubricants) shopping bag closed from top with four pieces of transparent scotch tape, and key ring was attached with the bottle neck by scotch tape and there was no invoice or delivery instructions note of SK Lubricants. IMO there should be a code on the product hidden underneath like scratch cards, which can be verified by sending an SMS to ZIC for its originality.