Is it really IMS failure?? Carnage pics and detail within!
01-29-2009, 12:59 PM
#46
Macster,
My understanding is Mobil 1 changed their formulation in the recent past leading to some issues. My local builder indicated to me they grenaded a few new engines using Mobil 1's new formulation and were able to trace the issue back to Mobil 1 and won't touch it as a result. My subsequent research indicated others having similar issues.
I won't pretend to be an expert because I am not, but I do listen to those I trust on the issue. For my 2004 Boxster S, I look for an oil at least an API SL, SH, or SJ rating and an HTHS viscosity of at least 4.5. So I run Castrol full synthetic 5w-40 (which is on Porsche's approved list and is easily obtained locally) or Redline 5w-40 (which isn't on Porsche's list and has to be ordered). For my Spec Miata track car I run Brad Penn 10w-30 which I like a lot and I order from LN Engineering.
As for why all the secrecy? I don't want to speak for Jake, but I've read lengthy, lengthy, lengthy discussions on Rennlist and the Pelican forums on the Mobil 1 issue that IIRC Jake participated in. I suspect he, and others that participated heavily in those threads don't want to open that can of worms again. As for me, I don't have the technical background to debate the issue with others so I won't. Basically I can tell you what I use based on information from those who know a lot more than me that I trust....that's about it.
Mike
My understanding is Mobil 1 changed their formulation in the recent past leading to some issues. My local builder indicated to me they grenaded a few new engines using Mobil 1's new formulation and were able to trace the issue back to Mobil 1 and won't touch it as a result. My subsequent research indicated others having similar issues.
I won't pretend to be an expert because I am not, but I do listen to those I trust on the issue. For my 2004 Boxster S, I look for an oil at least an API SL, SH, or SJ rating and an HTHS viscosity of at least 4.5. So I run Castrol full synthetic 5w-40 (which is on Porsche's approved list and is easily obtained locally) or Redline 5w-40 (which isn't on Porsche's list and has to be ordered). For my Spec Miata track car I run Brad Penn 10w-30 which I like a lot and I order from LN Engineering.
As for why all the secrecy? I don't want to speak for Jake, but I've read lengthy, lengthy, lengthy discussions on Rennlist and the Pelican forums on the Mobil 1 issue that IIRC Jake participated in. I suspect he, and others that participated heavily in those threads don't want to open that can of worms again. As for me, I don't have the technical background to debate the issue with others so I won't. Basically I can tell you what I use based on information from those who know a lot more than me that I trust....that's about it.
Mike
08-29-2016, 11:17 PM
#47
Track Day
Join Date: Aug 2016
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Interesting thread. I think I might be dealing with the same issue.
03/04 3 chain engine
What colour plastic are the ims chain guides? Black like the fixed cam chain guide, or white/yellow like the tensioner rail?
03/04 3 chain engine
What colour plastic are the ims chain guides? Black like the fixed cam chain guide, or white/yellow like the tensioner rail?
08-30-2016, 10:54 AM
#49
Instructor
Yes, thanks Jake. I can recommend Castrol Edge 5w-40. No-one can sue me (I hope). It quietened down my engine (2008 M97 3.4 with 60000 miles) immediately and I sleep better at night.
Now if only I could stop the throw-out bearing chirp, I'd be a happy man.
Now if only I could stop the throw-out bearing chirp, I'd be a happy man.
08-30-2016, 12:17 PM
#50
8th Gear
Join Date: Dec 2014
Location: Jacksonvill, Fla
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Hi All, I'm new to Porsche, having just bought a 2002 Boxster. I always believed that Porsche was a HI Quality, top of the line car! Was my view of the quality misunderstood, just a myth? I hope not!!
