Colder plugs - OK for daily driver in the winter?

[metroplex]

Are the colder plugs for the SHO ok to use on a daily driver in the Michigan winter? Will they tend to foul faster than the stock plugs? Would gapping the stock plugs smaller (like the colder plugs) be good enough?

 

[SHOdded]

Wouldn't worry about it.  Outside temps are not important, engine temps are.  The engine gets into closed loop very quickly, so any possible fouling will be mitigated.

 

[metroplex]

I've used 1 and 2 heat range colder plugs on the modular 4.6L V8s in the winter, and they seemed to foul a bit faster than stock - more so with the 2 heat range colder plugs.

 

[SHOdded]

How often do you change plugs?  May be a concern over tens of thousands of miles, certainly not a winter's worth (for most people).  Maybe bpd will chime in with his expertise/practical experience on this issue!

 

[metroplex]

It looks like a lot of members are running the SP534 reaped to 0.030", which is 1 range colder the early SHOs. I found Denso ITV22 plugs, and saw a few ppl here running them without problems. Know of any negative reports of using the ITV22 on the transverse 3.5 eb?