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So I went With Mobil 1 5w40
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11-10-2009, 09:53 PM | #1 |
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So I went With Mobil 1 5w40
So what do you guys think?
I know that the 0w40 is BMW approved but the 5w40 has more wear properties in the oil and I believe it will be better on the track. So what do you guys think?
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11-11-2009, 09:05 AM | #3 |
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I'm not going to comment on the wear properties because it's the wear properties of the oil which allows 0w-40 to meet BMW's extended service interval whereas the 5w-40 does not.
I can only assume that you're going to start changing at 5k-7,500 miles. |
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11-11-2009, 09:12 AM | #4 |
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There are more wear properties in the turbo diesel 5w40 (which I'm using) than the 0w40. This is one of the reasons why I went with the oil.
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11-11-2009, 09:15 AM | #5 | |
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I'm thinking your 5w-40 might be too heavy (Rumors have always been that the LL01 0w-40 actually performs more like a 30w oil so it's not a valid comparison). Time for a visit to bobstheoilguy.com. |
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11-11-2009, 10:22 AM | #7 | |
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If you look at the wear properties in the turbodiesel 5w40 in this pdf. The phosphorus and zinc is higher than the 0w40. http://www.mobil.com/USA-English/Mot...duct_Guide.pdf
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11-11-2009, 10:44 AM | #8 |
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As long as you change your oil every 7.5K or so, I don't see why you would have an issue running the 5w-40. I would really like to know what makes the 0w-40 pass BMW's test, but the 5w-40 does not.
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11-11-2009, 11:21 AM | #9 |
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Talking out of my ass I'm guessing that the ESP 5w-40 is too heavy whereas the 0w-40 really performs like a 30w. I'm also going to guess that the ESP 5w-30 is probably very similar to the ESP 5w-40 as far as meeting the requirements for diesel engines with DPF, but since BMW only run 30w in their non-m car's they only certified the 5w-30. LL-04 I think has more to do with being low ash than anything else. I'm going to sitdown and shut up now.
Last edited by F32Fleet; 11-11-2009 at 03:53 PM.. |
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11-11-2009, 12:23 PM | #10 | |
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0w40 & 5w30 RP for me ........... 7500K oil change intervals. |
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12-15-2009, 02:57 PM | #11 |
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I ran this oil at Laguna Seca and at Famoso Raceway so it's going to be interesting to see what the oil analysis indicates.
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