[ptycamry]

Sup guys..

I've been using Denso IK-20 Iridum plugs for the last 20,000Km (12,500 miles)..

The first time I changed my plugs was almost at 100,000Km (60,000 miles) and I removed the original stock plugs and put in Denso IK-20's...

I want to know how often should I replace those Iridium plugs..??

Thanks for the help...

 

[toyomoho]

If the original plug was a single electrode also, the Denso plug can go at least 100K miles. The owner’s manual may state to change them out 60K, this is Toyota attempting to maintain the emission standards the car was certified at. From a drivers performance standpoint, changing out a 100K plug with a new one; you will never feel the differance.