has anyone every used Zmax its been on tv before and now they sell it in advance auto i just wanted to know if anyone has try it and whut were the results :confused:

Just change your oil on a regular basis. Regular oil is fine, synthetic if you're paranoid like me. :) Use and engine flush every year or two and you should be fine. Those additives are a waste of money.

ok thanks

I would never buy anything form the tv..Its all a scam.if it was so good they wouldnt have to advertise it on tv. right?