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Post by flash1034 on Dec 24, 2003 0:46:25 GMT -5
My Porsche mechanic says that the 15w-50 Mobil 1 is the right oil to run in my 993. I read on the Mobil 1 web site that they recommend the 0w-40 weight oil. What are you guys running and why?
Thanks,
Flash
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Post by The Pope on Dec 24, 2003 20:01:40 GMT -5
Your Porsche mechanic is correct. Pre-1999 cars are to use 15W50 while the later cars use 0W40. The Mobil 1 web site may be referring to the newer P-cars.
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Post by jla993 on Dec 27, 2003 11:25:16 GMT -5
Bought a MY 1998 C4S (993) from second owner in FL. I live in Wisconsin. The car has always used Mobil 1 15W-50 and had 34K on the odo. I drove the car back home and wanted to change the oil after putting on 2K miles in a few weeks. The Porsche dealer recommended that I change to Mobil 1 0W-40 "European Car Formula." I told him the car was a 993 and had always used 15W-50. He said ECF is what Porsche wants the dealers to use. I checked Mobil 1's web site and it seemed to confirm what the service advisor told me so I made the switch. I have not noticed any oil "issues" since and have continued to drive the car in some pretty cold temps. Did the dealer make a mistake? If so, should I go back to 15W-50 at the next oil change? All input appreciated.
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Post by JWight on Jan 5, 2004 23:26:16 GMT -5
The guys at the PCA website (Porsche Club of America) say that you should be using 0W-40. Apparently, that was the factory fill and what they suggest, especially in cold weather. There was some info on the subject relating to hydraulic seals on valves or something like that, I'm no mechanic, but supposedly the 15W oil didn't allow them to seal properly at lower temps. Lots of good info there at that website, just go to the 993 section of the tech section and use the search to look up oil issues.
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Post by The Pope on Jan 6, 2004 10:27:49 GMT -5
No, there is no problem using 0-40 in the 993. However, the factory fill was 15-50 and there is no problems using that oil either. The factory is now using 0-40 in the 996 and Boxster cars and just wants the dealers to use the same oils in some of the older cars because 0-40 works just as well.
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Post by Rob Krumwiede on Feb 12, 2004 11:02:53 GMT -5
I have been running 0-50 here in sunny Californiiiaaa, jsut made switch to 0-40 no difference, I assume the 50 is probably better when driving in Arizona in 110 degrees ;D
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Post by ren911 on Mar 27, 2004 13:39:48 GMT -5
My CEL has been coming on with DTC P1411: SECONDARY AIR INJECTION SYSTEM SIGNAL INCORECT (CYLS. 4-6). I've been told by two different shops that this DTC means my 96 993 with 67K miles needs a valve job because of the accumulation of carbon deposits. At an estimated cost of $5-10k, a valve job is not something I'm willing to undertake at this juncture.
That said, I just had an oil change and instead of putting 15-50, they put in Turco 10-40. When I asked why, their reply was that 15-50 may be contributing to the carbon deposits.
Being in Atlanta, I figured 15-50 was the correct weight.
Have any of you had a similar experience?
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Post by steve on Apr 28, 2004 9:09:20 GMT -5
according to the european req for oil 15-w40 to 20w-50 for all round summer use!
i have 15-50(mobil) in mine which i suppose covers me for all uk weather!!!..
while on the subject anyone recommend an additive??...slick 50..wynns etc...or is it not worth it??..with it being a dry sump en all?
96-c2
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