Kirk Otis

Tiptronic, black top, 28,000 miles.
What should I be concerned about?
Can it be my (fair weather), daily driver?

The ask is 29000

Kirk Otis

4 new Michelin Pilot Sport PS2 tires (under 2,000 miles).
Clean CarFax record ("no accidents/no damage").
3.6L 6V engine, Tiptronic 5-speed automatic transmission, alloy wheels, Porsche premium sound system, a multi-CD player in dash, power seats, full leather, floor mats, air conditioning, power mirrors, power cabriolet roof in black.The IMS Bearing work has been completed.

Doug H

That is a pretty low price for only 28k miles. Check for bore scoring. An 09 with higher miles is a better way to go, but check for bore scoring on anything earlier than an 09.

Kirk Otis

It is a friends car (which makes me even more nervous). I sounds good, and there is no signs of scoring. Is this something that can be prevented? the car is an automatic, can there be a new chip installed that protects the engine? or some sensor, a better lubricant?

alwayswantedone

Take it to a Porsche shop that does pre-purchase inspections (can find recommendations for your area from folks here) and have it looked at critically.

Kirk Otis

Is there a way to avoid Bore Scoring?

Special oil, limit revving, operating temp, etc.

surfinglbi23

Pretty much the best way to prevent bore issues is frequent oil changes but I think there will be folks on here with issues regardless.

Petza914

Here's your checklist:

1. LN Engineering Spin on Oil Filter Adapter with K&N HP-1007 or M1-107 Filter - this prevents any debris from getting by the fiilter bypass valve in the OEM filter setup as the spring fatigues over time
2. FilterMag Oil Filter Magnet - traps any microscopic ferrous debris against the side of the filter
3. LN Engineering Magnetic Oil Filter Drain Plug - extra insurance. Don't over-tighten; just 19 ft. lbs.
4. Driven DT40 5W-40 Motor Oil - has the proper levels of Zinc & Phosphorous to protect the valve train and is good up to 300 degrees F
5. Change Oil every 4,000-5,000 miles based on results from Used Oil Analysis reports (send to Blackstone, LN, or others - make sure report includes the TAN & TBN analysis so you can see how much of the anti-wear additive package remains at the time the sample was taken)
6. Install 160 degree Low-Temp Thermostat - allows for a more gradual warm-up of the motor by opening sooner. This is the one that will help prevent bore scoring.
7. Don't start the car and let it warm up at idle - the enriched fuel trim that occurs with the initial higher RPM idle can wash lubrication from the cylinder walls - drive away so that this extra fuel is being used for propulsion. Do not exceed 3,000 RPM until the oil temp is up near 200 degress F on the left gauge.
8. Keep oil level at the full arrow or one line down from the full arrow - never above it where the bar-graph is completely full - this can damage your AOS.

This is what I'm doing in both my 2005 997.1 3.8s and haven't had any issues - wife's DD is at 95,000 miles and my supercharged one is at about 55,000 miles.

Enjoy !