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I have used Seafoam Many many times. It works Great on Carbureted Vehicles, Our IQ's are fuel injected.

Fuel Injection does not really need anything until you have many many more miles.

I would wait till at least 10K then, a fuel stabilizer, that lubes the fuel pump & top end.

Star brite Star Tron Enzyme Fuel Treatment Gas Additive
This is the best that I have tried.
I have no affiliation to this company, it just is a great product
 
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