Review on NGK 6240 PLFR5A 11 Laser Platinum by Rey Hossain

(1) Choose the correct spark plug. Platinum lasts longer but mi per gallon is fine. While Iridium spark plugs are good at mpg and last around 30,000 miles. There is a compatibility chart on the NGK website and I advise you to check it before purchasing. (2) Find the correct wrench/socket for your spark plug (preferably magnetic) so that you can easily and simply insert the spark plug into the engine socket. Fake: I glued the spark plug to the non-magnetic bushing with a little tape, lowered it, tightened 2 threads and pulled out the sock and tape, removed the tape and screwed the spark plug all the way. (3) After removing your old spark plug, hold it next to your new one to make sure the thread length is the same on both. I noticed an improvement from 22 to 26 mpg on the freeways for my 2003 Nissan Altima that did 100,000 miles.