Engine additives..

• Belly35

  

  Do you use engine, fuel additives to your vehicles?
  
  i change my engine oil on a regular mileage cycle, same for transmission but I do use an engine additive when I'm going on a long road trip and the same with a fuel additive. In the winter I will fill up with a higher octane gas once or twice a season.
• Uz2Bon36

  

  I've heard some mechanics say they use Lucas fuel treatment religiously. Also have read on Jeep forums about people using some Marvel Mystery oil to help clean/quiet lifters. Older Jeeps used flat tappet lifters which are notorious for being a tad noisy.
  
  Seafoam can be used by mechanics/dealerships (as a bandaid fix) to clean injectors before selling vehicles too. You can find all kinds of videos of people doing seafoam cleans on youtube because your car smokes like crazy.
  
• Ironman92

  

  No. Get oil changed about ever 5,000-6,000 miles.
• GoChiefs

  

  No. Regular maintenance is all you need.