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Old 09-13-2016, 01:43 PM   #1
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What you should really be thinking about is anoil's flim strength and a given product's ability to stand up to high temperature/high shear conditions without falling out of grade. Then the differences between a 0W and 10W-anything become much more obvious, regardless of the minimum ambient temperatures.
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Old 09-13-2016, 05:26 PM   #2
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What you should really be thinking about is anoil's flim strength and a given product's ability to stand up to high temperature/high shear conditions without falling out of grade. Then the differences between a 0W and 10W-anything become much more obvious, regardless of the minimum ambient temperatures.
So for an idiot like me, am I good with the 0/40W Mobil 1 Porsche spec'd earl?
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Old 09-14-2016, 12:33 PM   #3
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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   #4
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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   #5
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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   #6
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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   #7
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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 09-14-2016, 01:56 PM   #8
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What you have blundered into is an area where there are strong opinions and even a few based on facts. There are forums devoted to the subject (like this one) and, even after hundreds of postings, still differing opinions.

There are folks whose experience inside the M96 engine exceeds 1,000 that don't use any Mobile product. There are tens of thousands of P-car owners who do. An oil developed with Porsche is mind is Joe Gibbs DT40. May be tough to get though depending on where you live.
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