Originally Posted By: DeafBrad
So my plan is to leave the Double Platinum plugs in for 100k miles and then replace them. For the most part I am following the manufacturer's maintenance schedule (100k mile plug changes) and wanted to confirm these plugs are able to do that.
Think "bathtub curve". Some will fail early. Some will fail extremely late. Most will fail somewhere around the middle.
The warranty isn't really an indicator of how long something will last, but a liability the warrantor is willing to take. There have been some horribly unreliable products with long warranties. The warrantor just accepts it as a cost of doing business, along with the understanding that many or most won't even bother to get a replacement. I mean, what sense is it to spend $5 to ship something costing $10, with the chance that the claim is denied? Some companies with legendary reliability have short warranties.
I remember when Mobil had they're craziness with motor oil warranties. They offered to repair engine damage if their oils were regularly used for at least the manufacturer's recommendation or up to 5000/7500/10,000 miles under any service conditions. That led to some awkwardness, since some assumed the protection ended after the mileage number, even though the fine print said that the carmaker recommendation was fine, like a Honda's 10,000 mile OCI under normal conditions.
So my plan is to leave the Double Platinum plugs in for 100k miles and then replace them. For the most part I am following the manufacturer's maintenance schedule (100k mile plug changes) and wanted to confirm these plugs are able to do that.
Think "bathtub curve". Some will fail early. Some will fail extremely late. Most will fail somewhere around the middle.
The warranty isn't really an indicator of how long something will last, but a liability the warrantor is willing to take. There have been some horribly unreliable products with long warranties. The warrantor just accepts it as a cost of doing business, along with the understanding that many or most won't even bother to get a replacement. I mean, what sense is it to spend $5 to ship something costing $10, with the chance that the claim is denied? Some companies with legendary reliability have short warranties.
I remember when Mobil had they're craziness with motor oil warranties. They offered to repair engine damage if their oils were regularly used for at least the manufacturer's recommendation or up to 5000/7500/10,000 miles under any service conditions. That led to some awkwardness, since some assumed the protection ended after the mileage number, even though the fine print said that the carmaker recommendation was fine, like a Honda's 10,000 mile OCI under normal conditions.
