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At every oil change I've been using STP Super Concentrated Fuel Injector Cleaner. Every now and than I will use the STP Complete Fuel System Cleaner instead of the other stuff.

I've gotten good results using that stuff. It's not going to give you any instant horsepower (unless your fuel system is clogged to ****), but it will keep your fuel system clean and help prevent the loss of horsepower.

I'm going to try the Prestone variants though. Gotta keep it in the family. :)
 

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44k will do wonders...... I heard this from my mechanic friend. He says most anything else is junk.
 

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Amsoil, 44K or Chevron Techron.
If you read your owners manual DC does not recommend using any type of fuel or oil additives. I use one of the above to keep the injectors clean every 6 months.
 

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Penray #2112. I've used & sold this for 8 years & never had a complaint.(I'm also 6'3" & 295 lbs)lol
 
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