White987S

You finally cooked off all that moisture that had accumulated in your oil. Normal. Monitor your continued usage. It should stabilize.

I drive about 12,000 miles a year in the Porsche, from mid-March till mid-October. In winter storage the remaining months. I probably still drive 4x's the mileage of most all other Porsche owners. I have other winter hobbies and interests, and enjoy the break from the Porsche. Come every spring, I drive a "new" Porsche.

I've had several Porsches (Boxster 987S, 993 Turbo, and now a 991S). None have used oil between changes.  I am very happy with the Mobil 5W50. Porsche A40 approved. Excellent Blackstone UOAs. I have changed every 5,000 miles.

And hand carry the 3 gallons of distilled water, so you make sure they use it.

Flood salvage? Oouch. Salt water or fresh? Makes a difference. Talk to your insurance company and State DMV before you proceed too far into the process.

What is your plan? To have one set of tires do everything, and all seasons for you in CO? All season tires on a Porsche suck. They do everything just "OK". I'm not a fan of just "OK". Get a quality set of summer performance tires like Michelin Pilot Super Sports, AND a dedicated set of winter tires, on seperate wheels. Plug & play. Fun. Safe.

How much do you want to spend? Glass out? Concours? Too many variables. Could be <$3,000. Could also be +$12,000.

Other options for you:

1) Wrap it? Just about any color. Maybe <$5,000-ish

2) Get a high quality full paint correction detail, with a quality nano coating final step (like OptiCoat Pro Plus or CQuarts). At least $1,200. Could be more if you need a LOT of correction.

How's your clear coat?

One red tail light is called a "fog light".

Two red tail lights is called "brake lights".

1) Alignment.

2) Quality, matched, tires that are less than 4 years old, properly inflated, road forced balanced, and in the proper direction of rotation (if applicable).

3) Make sure rear spoiler deploys at about 72-75 mph.

4) Start shopping for new mechanic

Mileage? Driven in the winters by prior owner? My guess is bore scoring.

If you want to save money, buy 4 new Hankooks or Kumhos. 4 tires cost about the same as 2 rear Michelins. Don't mx & match tires.

Nothing will out perform your current MPSS, especially when you go to the DE.

Your rear tires need to match your front tires. Don't mix & match. Did you check Tire Rack? Your dealership? What is the DOT code date on your front tires?

The car holds over 6 gallons of coolant. Topping up with distilled water, is just fine. Don't worry. In emergency, you could get away with a quality bottled water from the gas station or convenience store. Never tap water. And only Porsche compatible coolant, bought from Porsche, or even VW or Audi if you want to save a little $.

Also look into a worn out ignition switch and worn out micro switch in the top's lock mechanism.

And you do not seem to have an aftermarket radio, so that rules that one out already.

Porsche filter or OEM?
Proper torque?
Proper clean-up? Could just be residual oil from the change out.

 

So, you've been driving around with a CEL, and now it's gotten worse? Hummmmm. Need codes. My guess is your MAF is toast. Disconnect, and see if it runs better. Remote guess is a tank of bad fuel.

 In addition, maybe just my imagination but seemed like less mechanical engine noise with DT40 compared to M1 0-40!

Not your imagination. One of the advantages of the most recent formulation of DT40.

Another local indy shop to consider would be Eurosport in Bensenville.

BAD NEWS guys... I drove the car for about 2hrs today going from one mechanic to the next for opinions and by the end of my trip, the check engine light came on and the engine started really struggling and shaking and I got P0300 and P0307 misfire codes!   :(

 

P0300: Random/Multiple Cylinder Misfire Detected

P0307: Cylinder 7 Misfire Detected

 

Is my engine hopeless?!

Ooouch!

Any recourse going back to the seller? I don't know Illinois law regarding used car sales. Is there an implied 30 day warranty? Was the seller a Porsche dealership, private party, random used car dealership.

As clean as the engine looks on a 91,000 mile car, I suspect it was dressed up just for the sale.

 call the wife or take a taxi, and retrieve the 997 with one of these tires, tools,  and a floor jack. The on-board spare would be for longer trips. 

 

 

Get the Uber app on your phone. No one uses taxis anymore.

If you need a good indy shop in the Chicago area, look into Fischer Motors in Lake Barrington. Rick Fischer is the owner.

Carry a quality vulcanized tire plug kit in the car and a pair of pliers. This will save you in many cases. And be diligent about checking your tires pressures, before & during, your drives. Lastly, inspect your tires for any nails. Your really need to get your head under the rear of the car to properly inspect the massive rear tires.

For #4 above:

If you drive to events, look into Yoko AD08R.

And here is Jake's email address:

jake.raby@me.com

or

jake@rabyenginedevelopment.com

 boxster in zenith blue metallic.

Franz

Franz, great color! Enjoy!!