[paulv]

Originally Posted by MNBoxster

Hi,

In the vein of leaving well enough alone, I wouldn't recommend this. If they're not leaking, leave them alone. The possibility always exists that you may install them incorrectly, or a seal might shift when inserted and fail to make a proper seal.

Of course, the same is true if you were only to replace them when required, but then, you're forced to assume this risk.

What I would recommend is having a full set of fresh 'O' rings on hand when doing a Spark Plug change and again, only change the ones which leak. Keep the 'O' rings in a ziplok bag w/ all the air pushed out to keep them fresh. Hope this helps...

Happy Motoring!... Jim'99

Jim,

That's good advice -- thanks!

Regards,
paul....