Haven't read about that??
Do you have any links that I could read?
The original waste spark plugs were changed years ago to single platinum tips on one bank and platinum centers on the other bank, assuming V6 or V8, so there was even erosion
Without that you get this: Can u use Single Platinum Spark Plug in 4.0 sohc?
Platinum coating actually reduces the required voltage from a coil, but because of that they are usually gapped slightly wider, lol, so use the same voltage but have better spark.
So would like to read about the coil issue with platinum.