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Best oil for 993???

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Old 03-01-2007 | 11:57 AM
  #16  
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Jon are u using Blackstone to track ur car engine's internal wear? if so how do u like them, I know some aircraft engines are tracked for internal signs of wear.

Anyone else using a simular company to Blackstone and how are ur results and costs?
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Old 03-01-2007 | 12:00 PM
  #17  
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I've used Blackstone for a few years now on other cars. I had them test the mystery oil my 993 came with to get a baseline and make sure there were no wear metals. I intend to have them test going forward.
Old 03-01-2007 | 01:48 PM
  #18  
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Steve -

Having read the article you have send around (which is great) what are we going with on the oil front. I think I speak for alot of people on this board when I say that the car sees summer street use, spirited driving and 5 to 10 track weekends a season. I have been a devoted user of Mobil1 15W-50, and their 90W gear oil, what are you recommending now, having this info. Do you agree with the 20W-50 motorcycle oil?
Old 03-01-2007 | 01:48 PM
  #19  
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PO religiously used Mobil 1 15W50 since 1996.
No drips or leaks EVER and she uses a quart approx. 2 to 2.5 thousand miles.

I only use Mobil 1 15W50 (SL) during my oil changes and also slip in a quart of Lucas.
No drips or leaks, quiet running engine, still uses a quart every 2.5K miles or so.
No complaints.
(And yes, I drive it year-round ...OK, OK, I try to avoid the salt-snow days).

Gerry
(Got it two years ago at 19+K on the odometer, she's now at 28K, and I'm just about to get the 30K service (and Bilstein-fandango) done.)
Old 03-01-2007 | 02:07 PM
  #20  
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and also slip in a quart of Lucas
FYI: http://www.bobistheoilguy.com/images/lucas/lucas.htm
Old 03-01-2007 | 02:26 PM
  #21  
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Yeah, don't worry, I've seen/read all the pros and cons about Lucas and 'frothing' etc. etc.
Based on what I read/saw I *still* made the decision to use a quart in the p-car.

Have used Lucas in the wife's Ford for the last 8+ years (and 80K miles) with no probems and in the p-car, now, for approx. 2 years, with nary a hiccup wrt oil pressure, consumption, weird sounds, etc. etc. etc.

As always, YMMV, mine seems to be OK!

G.
Old 03-01-2007 | 02:28 PM
  #22  
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15W50 in the house
Old 03-01-2007 | 02:29 PM
  #23  
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Royal Purple.
Old 03-01-2007 | 02:59 PM
  #24  
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Steve Weiner-Rennsport Systems
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Originally Posted by agdamis
Steve -

Having read the article you have send around (which is great) what are we going with on the oil front. I think I speak for alot of people on this board when I say that the car sees summer street use, spirited driving and 5 to 10 track weekends a season. I have been a devoted user of Mobil1 15W-50, and their 90W gear oil, what are you recommending now, having this info. Do you agree with the 20W-50 motorcycle oil?
My only point in offering that link is to say that oil formulations have (are) changed due to the new API SM rating and the EPA-mandated rules on cat life. This resulted in drastically reduced levels of ZDDP which is NOT a good thing.

The bottom line is that if the bottle has "API SM/SL" on it, its NOT the same good stuff as you've been using.

Last night after work, I perused the isles at my local Walmart looking at various oils to see what was currently available. All of the Mobil 1 formulations were now the new SM, the Royal Purple was still SL (this may change), Rotella & Delo were still SL or CJ but that will change soon as diesel oils reduce the Zn, P and S content.

Look carefully at the bottles as that tells the tale.

There is a LOT of activity on this subject over on Pelican's 911 Forum in a few threads and its really highly recommended reading!! You'll note a few comments on Lucas products, too.

Mr. Hillary's postings were very enlightening & educational but one needs to remember that the oil formulations sold overseas are NOT the same things as we have here, especially now.
Old 03-01-2007 | 03:56 PM
  #25  
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Were could i buy mobil 1 15w50 its hard to find it in montreal canada...
Old 03-01-2007 | 04:27 PM
  #26  
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Did a quick google and:

http://www.amazon.com/Mobil-15W50-Sy.../dp/B0002XI9N0
Old 03-01-2007 | 04:36 PM
  #27  
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Originally Posted by scott watkins
But that's the "bad" reformulated SM version.

FYI, the actual vendor isn't Amazon, it's CDOC: http://www.cdoc.com/products.asp?str=5010&name=FLUIDS
Old 03-01-2007 | 04:53 PM
  #28  
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While the SM formulation is not as good as the SL, I wonder is it still good enough?
Old 03-01-2007 | 05:01 PM
  #29  
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While the SM formulation is not as good as the SL, I wonder is it still good enough?
That's the whole issue at hand! This was linked to on the first page. Definitely read it to see what the problems are: http://www.lnengineering.com/oil.html
Old 03-01-2007 | 05:58 PM
  #30  
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Our 993's run Mobil 1 0W-40. Most importantly, whatever oil/visc. you are running, don't stomp on it until you are within safe operating temperature range.


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