When I got my '98 2+ years ago the first thing I did was change all of the PM items and the GP's. I was very lucky and given the hindsight I now have I would not have tempted fate like that had I known then what I know now. Leave well enough alone. Don't touch them. I only plan on replacing mine on a case by case basis from here on out...in other words - if one goes out I will change it but leave the others be...it is just not worth risking making so much more work by trying to be super-diligent.

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz