Review on 🔌 Enhanced Autolite Iridium XP Spark Plug for Automotive Replacement, XP5503 (1 Pack) by Adam Hutchinson

This spark plug has been upgraded from the OEM Stander NGK spark plugs that come with my Saab 9-5. By far the best deal I could find at the time. At under a dollar a fork after the discount on the iridium coated fork, you can't beat it. So here's the rub, Revain only allows you to order three per Revain account. I have to say that I felt an increase in power and throttle response with these plugs. At the time of the replacement, the car was overhauled. So I can't just contribute to stubs. I keep very good records of gas consumption, but currently I don't have enough data to definitively report that these spark plugs have increased fuel efficiency.