Denso (5303) IK16 Iridium Spark Plug, Pack of 1

Comment: Since the spark plugs on my mountain mitsubishi lancer 2.0 felt the difference of the normal wax candles. The originals were in very good condition. The engine now works with better performance at low and high revs, its response is faster, with the same fuel have more power and smoothness of motor.Si you want to save fuel will have to learn to dispense their management style. Excellent product 100% Japanese. The manufacturing quality is perfect. After thinking about purchasing this or another brand spark plugs and less if they are not manufactured in Japan

Comment: I bought a set of 6 for my Acura RL to replace the factory laser Platinum plugs. The first week after the replacement, my gas consumption increased from 22mpg to 20mpg. I attributed it to a cold spell that had come by in early October. The second week, it went back to 22mpg. I checked it this week and it has gone back up to 20mpg. I don't know where people are getting the improved gas performance from. I have not seen any difference between the 99k old laser Platinums and these 30 mile old Iridiums in performance, except that the Iridiums cost a lot more.

Comment: After reading all the info I could find, purchasing these plugs seemed the right thing to do, despite the increased expense. I have a 1997 Honda Odyssey, 215k miles, top mechanical condition. The plugs provided about 1.4 MPG more on a 480 mile round trip. My biggest expected savings, though, will be realized in the plugs' longevity. We'll see.

Comment: With these sparkplugs hope to get a better performance in my car, thanks for timely delivery and its seriousness, I'm still buying insurance.

Comment: Amazon claims a single Denso Iridium spark plug carries a list price of $20.38!
I suppose this makes their selling price of $8.47 per spark plug a bargain.
It just seems very costly compared to a $3.50 Platinum spark plug.
Longevity. My 2004 Camry has nearly 90,000 miles on the original spark plugs, but there is no evidence that it's time for a change. I just returned from a Labor Day trip where I averaged 44 MPG. Maybe I should wait until the MPG drops to 35 before buying new spark plugs.