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Old 09-14-2016, 12:33 PM   #1
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So for an idiot like me, am I good with the 0/40W Mobil 1 Porsche spec'd earl?
Depends upon what you want. We do not use any 0W-40 M1, and have not for many years now. The are much better oils available now that offer far superior engine protction. We also do not use any 0W-anything oils due to low film strength issues inherent to zero weight oils, regardless of the manufacturer, and stopped using Mobil 1 products completely not long after Exxon acquired them and started reformulating the line.
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Old 09-14-2016, 04:17 PM   #2
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Depends upon what you want. We do not use any 0W-40 M1, and have not for many years now. The are much better oils available now that offer far superior engine protction. We also do not use any 0W-anything oils due to low film strength issues inherent to zero weight oils, regardless of the manufacturer, and stopped using Mobil 1 products completely not long after Exxon acquired them and started reformulating the line.
Good to know, thanks.

Are there any particular brands you do suggest and weight? Like I said I have a 2001 Base with 43K miles and not replaced the IMS. I live in California and we have very mild winters (that is even a stretch, rarely hits freezing, and I actually rarely drive it in the winter, only on trips to the coast). Appreciate any help on this matter.
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Old 09-15-2016, 03:18 PM   #3
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Good to know, thanks.

Are there any particular brands you do suggest and weight? Like I said I have a 2001 Base with 43K miles and not replaced the IMS. I live in California and we have very mild winters (that is even a stretch, rarely hits freezing, and I actually rarely drive it in the winter, only on trips to the coast). Appreciate any help on this matter.
I would not go any lighter than a 5W-40, prefering a 10W-40 in warm climates due to improved film strenghts. I would also focus on ZDDP content.

There are several brands worth looking at, in cluding Joe Gibbs, Motul, Castrol, and even some of the Shell Rotella's.
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Old 09-16-2016, 03:12 PM   #4
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I would not go any lighter than a 5W-40, prefering a 10W-40 in warm climates due to improved film strenghts. I would also focus on ZDDP content.

There are several brands worth looking at, in cluding Joe Gibbs, Motul, Castrol, and even some of the Shell Rotella's.
JFP, I thought the Shell Rotella Full Synthetic is just for Diesel Engines, is that correct?
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Old 09-17-2016, 01:48 PM   #5
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JFP, I thought the Shell Rotella Full Synthetic is just for Diesel Engines, is that correct?
Yes. Many diesel oils are very high temp/high shear resistant Group IV oils, with very high ZDDP levels because they do not use cats.
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Old 09-17-2016, 02:01 PM   #6
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Yes. Many diesel oils are very high temp/high shear resistant Group IV oils, with very high ZDDP levels because they do not use cats.
Sorry for sounding like an idiot, but should I use Rotella in my 986 or not? Because I thought you were recommending that I use Rotella T6 Full Synthetic 5/40W

Sorry to bug you but I am due for my next oil change and I just want to get it right.

Thank you
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Old 09-17-2016, 03:02 PM   #7
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Sorry for sounding like an idiot, but should I use Rotella in my 986 or not? Because I thought you were recommending that I use Rotella T6 Full Synthetic 5/40W

Sorry to bug you but I am due for my next oil change and I just want to get it right.

Thank you
Yes, you can use the Rotella T6. You could also use Joe Gibbs DT40, which is another excellent choice.
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