searched around for a good two hours and didnt find the info i was looking for so heres my Q

does anyone do anything extra to prevent carbon build up other than regular oil changes?

If so what and how often?

 

Use good oil... Lucas treatment once every 1000 miles or so... Run 91 octane haha..

 

Fill up at only chevron or shell.

 

yeah i already put shell 91 octane and change the oil on time! was more curious if people use like seafoam in the oil or something like that?

 

Only use seafoam in your oil if your are going to change your oil again in under 500 miles. Like say you change your SYNTHETIC (Hopefully you only run full synthetic) at the normal mileage you could put in NON-SYNTHETIC same weight and pour like half a can into your engine and run to walmart then taco bell then come home, eat, then change your oil again with SYNTHETIC you would be doing a wise thing. But due to the high cost of changing your oil twice and purchasing a can of seafoam many do not do this. A wise thing to do would be like every two oil changes pull off the vacuum line off of your brake booster and sip some sea foam into the line that has vacuum (suction) while the engine is running and keep the RPM around 2000-3500 rpm you would be doing a good thing for your valves and cat by burning off caked up carbon on them. While doing this it is normal to see a smoke screen emitting from your exhaust and successfully pissing off your neighbors at the same time.

 

On top of that, if you have recently purchased your car or do not know when the following have been done you should probably do to prevent headaches down the line: Change fuel filter (you can test it by blowing on it and if there is much resistance change it, but then you must either use your lips or find some other way to check if there is resistance and at like $8 for a filter it is just easier to replace), Change PCV valve ($4 at autozone), change plugs at least wires too if you have the expendable money, flush all fluids and replace with new, if you are really serious about preventative maintenance replace your transmission oil (Do not use SYNTHETIC)

 

yeah ive done all that i just built the car! im very familiar with the basic tune up and maintenance just not so sure about additives? thanks for the response. the engine is in pristine condition as of now so just wanted to keep it that way, prob every once in awhile ill do what u recommended and change the oil place seafoam and then rechange the oil!

 

You're wasting your money and time putting 91 octane in it. If you have a high compression setup then fine run 91 all day, but as stated NUMEROUS TIMES mini-me's at 9.9~ compression run fine on 87 octane.

You can actually be doing harm as well as making your engine run worse because now you aren't getting complete detonation of fuel. Bad.

 

Stupid chrome f'd up.