Dealer offer to perform Fuel injection system for my G35 to make it runs smoother as I was compliant about rough idle from time tot time. I said no as I know they'll charge me an arm or leg to get this done. I havn't use the fuel injector cleaner additives since I have my G35. I think it should do the same job with what dealer does.

Should I have dealer do it? Or just get a bottle of Mobile1/chevron Fuel injection cleaner additive from Costco like I always does?

 

Lucas fuel system cleaner is the best one out their. It has a slight edge over the chevron/techron. I wouldnt touch STP or any of those brands.