Engine

I've heard that 2005 Boxster S's can either the single or double row IMS bearing.  Can I determine which one by looking at my VIN?

In ims video number 4, the caption says that 1995 through 1998 Boxters do not sure ffer from significant failure rates, however the gentleman speaking in the video says it is 1995 through mid-year 2000. Which is it?  Thank you.

Once in a while, when car is started, a whiring noise, like a fan, can be heard coming from behind me. Sounds like it is behind passenger seat. Stops after a while. What is it? Thanks-Andrew

Mass Flow sensor was relaced and the check engine light was reset but came on after approximately 60 miles.   After this a high pressure smoke test showed smoke coming out the #1 cylinder.  I was told it was the spark pulg seal and this problem could cause the check engine light to come on.  The idea is that if smoke is coming out, when the motor is running air was being drawn in changing the air fuel mixture.  

Another mechais said that this didn't matter.

The car doesn't start every time I try.  It will start and restart several times during the day and then it will not start.  There isn't a Porsche repair shop in Key West, A local mechanic has checked the obvious things such as fuel, spark, and air supply and all seem OK.  Are there any switches, relays, etc that I can direct him to check out?  Thanks for your help.  John Hudson

I inadvertantly topped off my 981 Boxster S with about 2 quarts of ethylene-glycol coolant.  I know that coolant types are not to be mixed but haven't found any information related to how much ethylene-glycol mixed in with OAT coolant is problematic.  The cooling system has 4-5 gallons of coolant so at most it is now 10% ethylene glycol and 90% OAT.  The coolant still has a pink color and operating temperatures are the same as they've always been.  I've talked with the service folks at my local Porsche dealer and it's a fairly expensive job to flush and refill the cooling system - so I'd ra

I used to drive my 1987 3.2L Targa very briskly, and never had any engine problems. Can I drive my new 2012 Boxster S in the same fashon?  Has the 9A1 engine proven to be robust? Thank you.

Wondering whether it's best to change oil in my car before putting it away for the winter or after taking it out of storage.   I drive the car about 2500 miles a year and up to now have been changing oil in spring.  If I have the oil changed in fall before 4 month storage I would usually drive it for 5 miles from the shop to my garage. 

I have a base 2009 with PDK.  Just added Sport and Sport+.  Plan on doing three or four DEs this year.  Running Mobil One.  Should I change oil more often?  Should I change to a pure racing oil for the DE?  I understand the racing oil has more wear additives but less corrosion preventative requiring more frequent changes.  Should I send the oil for testing?

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John Carson