Review on NGK 90083 LTR5BI 13 Laser Iridium by Jason Taylor

Installed on my 2010 Mazda3 Touring (2.0) last month. They look like stock iridium candles that have lasted 90,000 miles and work great. I've always gotten around 28-30mpg in mixed driving depending on traffic and A/C usage and they seem to be just as good or maybe a little better than the stock. Installation was very easy (see YouTube video) - just be careful not to over tighten the threads and use a torque wrench to prevent over tightening (aluminum bushings). Buy it; Just don't bother with less and these seem excellent.