Review on 🔥 NGK Iridium IX Spark Plug 5464 BKR5EIX-11 - Pack of 4 by Bart Elbrink

My Subaru was running a bit rough and it was time for new spark plugs so I decided to upgrade and tried the iridium ones. The old spark plugs had about 50,000 miles on them and were long overdue for replacement. The OEM connectors were platinum and I am told that platinum connectors can last up to 100,000 miles. Of course, this is not the case because after 50 km everyone was fouled. I installed new iridium spark plugs and suddenly my engine was like new again! Idling was quiet and smooth, as it should be. I've also noticed a slight improvement in fuel economy, but that's not surprising after changing fouled spark plugs. With only around 1000 miles on it I can't tell if the BKR5EIX-11 Iridium IX spark plugs are any better than the OEM platinum ones but they are about the same price so why not give it a try? Iridium is a much harder metal than platinum and has a much higher melting point, so these plugs are more durable and should, at least in theory, last longer than platinum. They don't get any hotter than OEM plugs, but with a thinner electrode they require less energy to spark meaning they're more efficient. I expected them to come with preset gaps but as they are not stock end caps for my Impreza 2.5i they were not set correctly for my car. I don't know if it's because iridium is a much harder metal than platinum and copper, or just because my hands aren't as strong as they used to be, but I struggled to get the .44 gap right get it. After finally getting them, I decided to save a lot of money and install them myself. I checked Subaru's online forum and a few people said it was very difficult to replace spark plugs on a 2008 Impreza. While I wouldn't say it was easy, I definitely wouldn't say it was that hard. As long as you have a standard 5/8" spark plug socket, a 3" or 4" extension, a flare nozzle and a little patience, I see no point in paying a ridiculous amount to a shop or dealer. money to install them for you. Maybe if you value your time or spent a lot of time getting a manicure it was worth it, but you don't have to be a master mechanic to put new spark plugs in an Impreza. If you'd rather leave such tasks to the professionals, there's no judgment here. I'm a bit short on cash right now and the dealership charged a lot of money to change four spark plugs.