Which one should I use? They both have techron in them. Which one does Hyundai use? I know one is stronger than the other. I have a 2013 sedan 3.8. Is the fuel system cleaner too harsh? I know some people say not to use seafoam because it can mess things up. Thanks for your help!
Picked up a 6-pack of Chevron Fuel Injector Cleaner with Techron at Costco today. Price was $13.99 after $4.00 instant rebate at register (no coupon required). Not sure how long this deal will last. Costco membership required.
