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Old 07-14-2017, 04:00 PM   #1
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1st Oil Analysis

Had my oil done...seems to be good...any thoughts?



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Old 07-14-2017, 05:41 PM   #2
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Had my oil done...seems to be good...any thoughts?

Sure: Why are you using a 5W or even 10W-30? It is the wrong weight for these engines...............
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Old 07-14-2017, 09:07 PM   #3
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Sure: Why are you using a 5W or even 10W-30? It is the wrong weight for these engines...............
Agreed. My understanding is that for M96 engines under 80K miles 0W-40 is recommended. After that, and in hot climates, 5W-40 is the way to go.

I believe Mobil 1 5W-30 is recommended for diesel engines, so I would stay away from that formula. I could be wrong, but this philosophy has served me well for many years.

Just sayin'............

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Old 07-15-2017, 02:33 AM   #4
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Good report, but it's only one report, and your baseline. Stop using a 5W30 oil. If you want to stay loyal to Mobil, and want an A40 Porsche Approved Oil, I'd recommend 5W50. That's what I use. If you drive in the cold months, switch over to 0W40. I use Mobil 5W50 from March till Ocober, and change every 5,000 miles. Car is hibernated in the winter.
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Old 07-15-2017, 03:58 AM   #5
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Sure: Why are you using a 5W or even 10W-30? It is the wrong weight for these engines...............
I have a 986 with 44K miles and still have the original ims, I was told to use 10w40. Which I have done and using the Gibbs racing oil. Is this still the recommended weight for my particular situation?
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Old 07-15-2017, 06:12 AM   #6
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Thanks I used 0w-40 for the oil change. The other was the PO choice
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Old 07-15-2017, 06:53 AM   #7
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I have a 986 with 44K miles and still have the original ims, I was told to use 10w40. Which I have done and using the Gibbs racing oil. Is this still the recommended weight for my particular situation?
10W-40 oil, depending upon whose oil, usually offers considerably higher film strength than lower weights. That said, there are now 5W-40 oils, such as the Gibbs DT40, that show comparable film strength in a slightly lower weight oil, which the M96 engine likes.
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Old 07-15-2017, 10:54 AM   #8
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10W-40 oil, depending upon whose oil, usually offers considerably higher film strength than lower weights. That said, there are now 5W-40 oils, such as the Gibbs DT40, that show comparable film strength in a slightly lower weight oil, which the M96 engine likes.
That sounds good, I have been using the DT40, so I'll switch to the 5W40 on my next change. Thanks Jeff

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