[HWYSTR455]

Nah, I get it, sorry if I came across wrong, meant no harm. And yeah, you can probably get away with plug wires for more than 5 years, but like I said, silicone flat breaks down over time, just like rubber. Faster I think. It's just easier to pick an interval to change at, then there's no question.

It's a matter of how long items are exposed to oxygen. That's what breaks things down, managing temp and humidity helps, but you can't really create a vacuum every time you park a car.

The shorter the wires the better. COP is good, no plug wires. Caddys and others have a 10 year/100k service interval, other than normal 'wear' items, or used to. But I know many that have had to replace stuff that failed, and in like a 4-5 year range.

.