Twenty Year Old 986 Owners How's It Going?

[Disaster]

Originally Posted by jdlmodelt

all of my plastic has been fine. No brittleness or drying up of soft rubber.

Believe me the plastic is much more brittle than it was new. Rubber components are less compliant and more likely to crack, split or leak. If the engine was replaced you might have got lucky and had less compliant hoses replaced at that time.

For example my engine's foam heat shield/mat had shrunk and cracked and the backing was brittle sheet that fell apart as I manipulated it. The top edge of it was laying against, and being eaten by a serpentine belt pulley (which itself was dry and full of micro cracks.) I cut a third of the heat shield away and replaced it with sound deadener that attaches directly to the body panels.

Some other known possible aging failures are the coolant tank, coolant hoses, spark plug tube seals, AOS, mirror visor covers, speakers, and the rear window.

[Luv2Box]

Thanks everyone I appreciate your candid answers. The main word I'm reading here is "plastic." My '99 Tip has always been garaged by me (and it appears that the prior owners also garaged it) and I also use a cover on it as I moved next to the ocean a couple of years ago.
Last year I had the car inspected and was told it is in remarkably good condition for a 17 year old car. Over the six years I've owned it I've replaced the top, front seats (wish Porsche had used thicker bolsters on the driver's side), suspension (M030 Sport), Big Red brake upgrade, intake and exhaust upgrade, IMS (LN ceramic) and RMS, respray and new windshield (insurance paid for both), 18" wheels and several other minor mods to interior.
Although I rarely drive it with the top up I'm not experiencing the plastic deterioration I'm reading about here but thanks to your inputs I now know what to keep a check on.

[mnc-i]

Luv2Box,

I have a 99 Boxster I purchased in 2009 with about 104,000 miles. It currently has 283,000 miles.

Yes all the plastic and rubber parts do tend to deteriorate.

Mine is running just fine, but my passenger side low beam headlight when out three days ago. I am toying with the idea of having the dealer replace the bulb. This is because when my driver's side low beam went out about two years ago I broke the plastic clip that holds the clip the headlight unit plugs into. After spending hours taking off my front tire and wheel well liner, I still found no joy. My independent mechanic was able to repair it and also repair the very brittle wires in the headlight unit that had lost all their insulation.

I've replace the factory seats with sport seats (thanks Woody), replaced a passenger side axle (thanks woody), replaced the CDR220 and put on later model 17 inch wheels.

I've had only one oil leak and that was a bad oil sending unit.
The light on my odometer goes out, but comes back on every so often. I can live with that.

MNC-I

[Disaster]

Originally Posted by mnc-i

The light on my odometer goes out, but comes back on every so often. I can live with that.

MNC-I

The cluster lights are really easy to replace. You have to pop off the left cover and right emergency flasher and remove 2 star screws. Then the cluster lifts right up and you gain access to what you need. The lights are cheap.

[Luv2Box]

Originally Posted by mnc-i

Luv2Box,

I have a 99 Boxster I purchased in 2009 with about 104,000 miles. It currently has 283,000 miles.

Yes all the plastic and rubber parts do tend to deteriorate.

Mine is running just fine, but my passenger side low beam headlight when out three days ago. I am toying with the idea of having the dealer replace the bulb. This is because when my driver's side low beam went out about two years ago I broke the plastic clip that holds the clip the headlight unit plugs into. After spending hours taking off my front tire and wheel well liner, I still found no joy. My independent mechanic was able to repair it and also repair the very brittle wires in the headlight unit that had lost all their insulation.

I've replace the factory seats with sport seats (thanks Woody), replaced a passenger side axle (thanks woody), replaced the CDR220 and put on later model 17 inch wheels.

I've had only one oil leak and that was a bad oil sending unit.
The light on my odometer goes out, but comes back on every so often. I can live with that.

MNC-I

My driver's side headlight has the same clip broken and I'm dreading the bulb burning out because it will have to be replaced. Thanks for the heads up I'll have my indy do it.
I'd love to have sport seats in mine but Boxster Red Sport seats are a needle in a haystack to find and super expensive when they rarely come up, or they are in such poor condition they'd have to be recovered.

[jdlmodelt]

That's right...my passenger speaker cover was cracked so I applied some super glue to stabilize it. Also, yes the visor mirror covers do suck with brittleness.

Originally Posted by Disaster

Believe me the plastic is much more brittle than it was new. Rubber components are less compliant and more likely to crack, split or leak. If the engine was replaced you might have got lucky and had less compliant hoses replaced at that time.

For example my engine's foam heat shield/mat had shrunk and cracked and the backing was brittle sheet that fell apart as I manipulated it. The top edge of it was laying against, and being eaten by a serpentine belt pulley (which itself was dry and full of micro cracks.) I cut a third of the heat shield away and replaced it with sound deadener that attaches directly to the body panels.

Some other known possible aging failures are the coolant tank, coolant hoses, spark plug tube seals, AOS, mirror visor covers, speakers, and the rear window.

[CoBeerToad]

Pretty solid. 105k and garaged 99% of the time.

I replaced all the suspension last year or maybe the year before that.
Was told the plastic window was replaced by PO, but it's in need again. With the top being manual, it mostly just sits folded down during the summer months anyway which I'm sure doesn't help, but if I can't see it, it isn't happening.