Survey of 996 Owners

I'd like to conduct a survey of 1996-2008 Porsche owners in order to get an idea of what kinds of preventative maintenance have the most value/effect. Whether your car is healthy or if you've experienced an IMSicon failure or bore/cylinder scoring issue, please share. I will post this survey in a number of forums and compile the information in order to get some conclusive data on what works instead of just relying on circumstantial evidence: 1) The year, model, and mileage of your Porsche the last time you drove it (i.e., at the time of failure, if it experienced one) 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? 2a) Did the failure occur on a racetrack? 2b) What was the nature of the failure? 3) What oil is/was used in the car? 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? 5) Did/does the car have a magnetic oil drain plug? 6) Did/does the car have a 3rd radiator installed? 7) Did/does the car have a low-temp thermometer installed?

99 c2 cab tip. 96,808 No failures Mobil 1 0-30 (planning on slightly heavier weight at next change. Oil seems too thin at temp.) Stock oil filter magnetic drain plug does have 3rd radiator stock thermostat Car is a daily. Have put about 1000 miles on it in the last 2 months. Oil level does not decrease at all between oil changes. 5,000 mile intervals. Car is currently at 5700 on current change. Still at the full mark. Checked when cold.

Hi, welcome back! What have you been up to since your first series of posts 16 years ago and today?

1) The year, model, and mileage of your Porsche the last time you drove it (i.e., at the time of failure, if it experienced one) --Two days ago-- 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? --No IMS or scoring issue, but the engine did fail (connecting rod bolt) 2a) Did the failure occur on a racetrack? --Yes, I am an idiot and money shifted the car-- 2b) What was the nature of the failure? --Rodbolt stretched, connecting rods gave up. Dual D-***** on cyl 2 and 3-- 3) What oil is/was used in the car? --DT40 on street, XP9 on track-- 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? --Spin On-- 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? --Not sure what this is. Time to go Google-- 5) Did/does the car have a magnetic oil drain plug? --Did not at time of failure, does now.-- 6) Did/does the car have a 3rd radiator installed? --No-- 7) Did/does the car have a low-temp thermometer installed? --Did not at time of failure. Does now--

1) 2000 C2 Cab. Daily driver. Owned 1.5 years. Only failure was tiptronic trans. 2) No. 3) Mobile 0-40 or Motol something. 4) Stock filter. 5) Yes. 6) Yes, standard on tips. 7) No.

My answers are based on the time of failure 1) The year, model, and mileage of your Porsche the last time you drove it (i.e., at the time of failure, if it experienced one) 2002 c4s - 106k km 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? Scored cylinders 4 & 6 2a) Did the failure occur on a racetrack? No 2b) What was the nature of the failure? No Clue, my guess is extensive winter driving 3) What oil is/was used in the car? Mobile 1. 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? No 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? No 5) Did/does the car have a magnetic oil drain plug? No 6) Did/does the car have a 3rd radiator installed? No 7) Did/does the car have a low-temp thermometer installed? No

1) The year, model, and mileage of your Porsche the last time you drove it. '02 C4S, 120k+ miles | '99 C2, 105k miles 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? No | No 2a) Did the failure occur on a racetrack? n/a 2b) What was the nature of the failure? n/a 3) What oil is/was used in the car? Rotella T6 in both 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? No | No 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? n/a 5) Did/does the car have a magnetic oil drain plug? No | No 6) Did/does the car have a 3rd radiator installed? No | No 7) Did/does the car have a low-temp thermometer installed? Yes | No And because everyone seems to care: 8) Did the care have the original or aftermarket IMS bearing? LN retrofit @ 103k miles | Original IMS bearing (I don't own either car anymore, but I'm still in contact with the current owners)

1) The year, model, and mileage of your Porsche the last time you drove it (i.e., at the time of failure, if it experienced one) - 2004 Carrera 2, 84,000 kms 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? - Luckily no 2a) Did the failure occur on a racetrack? - N/A too risky to track 2b) What was the nature of the failure? - N/A 3) What oil is/was used in the car? - Mobil 0w40 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? - LN Spin on + LN pro retrofit 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? - No, planning to buy one on my next trip to the USA 5) Did/does the car have a magnetic oil drain plug? - No, installing LN next service 6) Did/does the car have a 3rd radiator installed? - No at present but will be installing one 7) Did/does the car have a low-temp thermometer installed? - No, dont have any plans for one

1. 1998 C2 101800Km, drive everyday 2. No 3. Mobil 0W40 4. OEM 5. No 6. Yes 7. No

1) 2002 Porsche Carrera -78k 2) No - Timing Chain started disintegrating 2a) No 2b) Timing Chain started disintegrating 3) I am not sure, I believe it was like this when I purchased it 4) Not then, it does now 4a) 5) It does now 6) No 7) No I highly recommend pulling the sump and looking for metal bits when purchasing used, this would have saved me some serious cash.

1. 2000 Carrera Coupe 102,025, drive once a week or more on occasions. 2. No 2a. No 2b. IMSB (dual) had excessive wear replaced @ (100k). 3. Not sure about before but now running Mobil 0W40. 4. Stock Filter Assembly. 4a. N/A 5. Yes 6. No 7. Yes

Not sure this 'survey' will be helpful but I'll play. 1. MY99 coupe, 6 spd. 74,300 miles 2.neither 2a.na 2b. na 3. castrol 5w-40w synthetic 4. oem 4a.na 5.yes 6.no 7.next week

1. MY '99 C2 - summer DD car - 137k mileage currently 2. Original motor failed on the track in '08 @ 84k mileage Not sure of failure type Replaced with a factory replacement in '08 (Sunset Imports - local indy installed) 3. Mobil 1 (0-40w) 4. No 5. No 6. No 7. No

Thanks for all the responses, and please keep them coming. In response to ejDoherty: I am a frequent poster at Planet-9 and on a bunch of Facebook Forums, and I used to be VERY active at Pelican Parts. Not sure why I never frequented Rennlist (I think at one point you had to pay for membership?)

Kris Murphy -- what kind of 996 is your car? What was the mileage at the time of the engine failure, and what is the current mileage on the new engine?

1) The year, model, and mileage of your Porsche the last time you drove it. 2004 Carrera 4S, 93k miles 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? No 2a) Did the failure occur on a racetrack? n/a 2b) What was the nature of the failure? n/a 3) What oil is/was used in the car? Motul Excel 8100 5w40. 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? - LN Spin on 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? - No 5) Did/does the car have a magnetic oil drain plug? - Yes 6) Did/does the car have a 3rd radiator installed? - No 7) Did/does the car have a low-temp thermometer installed? - Yes

in the name of science... 1) The year, model, and mileage of your Porsche the last time you drove it (i.e., at the time of failure, if it experienced one) 2004 40th Anniversary 35,600 2) Did your car experience either an IMS or cylinder-scoring-related engine failure? No 2a) Did the failure occur on a racetrack? No 2b) What was the nature of the failure? N/A 3) What oil is/was used in the car? Mobil 1 0w=40 / Castrol 5w-40 / Mobil 1 5w40 / Motul 5w-40 / DT-40 5w-40 4) Did/does the car have a LN engineering spin-on oil filter, or the stock oil filter? Yes, currently using a Napa Gold 4a) If the filter was a spin-on, did/does the car also have the extra magnetic strip installed? No 5) Did/does the car have a magnetic oil drain plug? Yes, since 27,000 miles 6) Did/does the car have a 3rd radiator installed? No 7) Did/does the car have a low-temp thermometer installed? No, but the part and fluids are in house

1) 2004 911 Targa, 80,200 miles. 3rd owner. It's been my daily driver for the last 6 years or so. 2) Only failures have been the water pump and AOS. The RMS was replaced by a previous owner. It still has the stock IMS bearing. 2a) Failures occurred in daily driving scenarios. 2b) Water pump bearing failed, and AOS started leaking coolant. 3) Mobil 1 0W-40, religiously. 4) Stock oil filter. 4a) N/A 5) I installed a magnetic drain plug during my 1st oil change. 6) No 3rd radiator installed. 7) No low-temp thermometer installed.

what mileage did water pump fail?

1) 2003 996 C2 Coupe 3.6L Carrera Aero. I drove it today. It just hit 66k miles. The IMS LN single pro was installed with new flywheel/clutch assembly at 60k mile service. IMS bearing indicated no signs of faliure 2) No 2a) N/A 2b) N/A 3) Mobil 1 0w-40w fresh every 5k 4) No stock, use only Porsche filters 4a) N/A 5) Yes, dating all the way back to first dealer service. Drain plug replaced with a new magnetic one every other change. 6) No, to date no cooling issues street or track. 7) No