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Testimonials

Marissa S. |
have been using Syntek Xtreme Fuel Treatment for my last four fill ups. I have upgraded my mpg from 20.2 to 26.3. What's even better, my car is running with the power it use to have when I purchased it 5 years ago. I would definitely recommend Syntek Xtreme Fuel Treatment to all my friends.
Paul W. |
My last 5 fill-ups in my '95 Maxima showed an increase in mileage from around 28 MPG to and average of 31 MPG. The car (original engine) has 401,600 miles on it and the idle is smoother and the engine seems quieter than it has been in years.
Joseph D. |
Since my first use of Syntek Xtreme Fuel Treatment, I have been getting an extra 60 miles per tank! Syntek Xtreme Fuel Treatment is saving my wife and I over $10.00 with every fill up. I would recommend using Xtreme Fuel Treatment to anyone
Frequently Asked Questions
Click on any question below to find the answer.

Q: Does This Void My Engine’s Warrantee?

Q:Why Am I Just Hearing About This Now?

Q: Will This Hurt My Engine?

Q: What Will Happen To My Vehicle if I Stop Using It?

Q: Is Xtreme Fuel Treatment Classified As Hazardous?  Are There Special Handling Requirements?

Q: What makes Syntek Xtreme Fuel Treatment different from all the other additives on the market?

Q: Can I use lower grades of fuel when using Syntek Xtreme Fuel Treatment?

Q: What happens if I put more Syntek Xtreme Fuel Treatment in my tank than is recommended?

Q: Do I need to add the Syntek Xtreme Fuel Treatment on an empty tank?