10-14-2019, 09:00 PM | #1 |
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Blackstone Report; Liquimoly Molygen 5w-40
Hello everyone.
As some of you know, I've chosen to run a few different brands of oil to decide which will be the one I stick with. The first time around I used Pennzoil Platinum Euro 5w-40 (you can see the original analysis here) For round two, I used Liquimoly Molygen, also in 5w-40, the results of which I received today and have posted here below. Both analyses are on this latest report; LM is in the first/left column, Pennzoil in the next, with averages in between. I'm currently running Amsoil 5w-40 European. Based on the results of that third and final analysis, I will decide which one of the three will be my regular fill. I follow a ~6k mile OCI. Hope y'all find the info useful. Last edited by IraHayes; 10-14-2019 at 09:15 PM.. |
10-14-2019, 09:06 PM | #2 |
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Keep us posted, very interested in the results. Just had my 80k oil change. Been changing oil every 5k since 30k when I bought the car.
Have used the following: Mobil 1 0W40 Liqui Moly Leichtlauf 5W40 BMW Dealer Fill 0W30 (whatever that is) Trying to decide on my long term choice and wondering if Liqui Moly is worth the premium price and effort to order or if there is something I can pick up easily in a local store. |
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10-15-2019, 11:10 AM | #4 | |
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These two oils are pretty damned close, though based just of the flashpoints and TBN, I think I'd lean toward Pennzoil between these two, as wear metals are pretty close. If TBN is any indication, I'd be inclined to think the Pennzoil will fare better between these two if I were to stretch out my OCI. All said, I'm really looking forward to the results from the Amsoil I'm currently running. Project Farm on YT recently ran a series of tests on about 20 different oils. Amsoil and Pennzoil came out on top, with Amsoil coming in "1st place." I'm really interested to see what that Analysis shows. |
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10-15-2019, 05:38 PM | #5 |
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+1. Not to mention that single pass UOA's aren't useful. UOA's are for trending.
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10-16-2019, 11:43 AM | #6 | |
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Wear metals will be similar between oils, the TBN depends on the new oil TBN formulation. Around 8 is average garden variety oils, 12 TBN is the good stuff for long term running. However I am not sure what the TBN for the BMW spec oil is to be. European specs lock in a formulation and don't allow timely improvements to follow the latest technology. Are you using the European formulation of Amsoil or one of their other oils? Results should be good based on the 40 years I have been using and doing UOA. |
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10-16-2019, 07:43 PM | #7 | |
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I’ve gotta say, I’ve read and heard a lot of hype about Amsoil over the years and was very skeptical. As a former mechanic, and one that has worked on my own cars all my life, I am very skeptical about claims made by anyone regarding a product. I’m always inclined to think that if something is being pitched really hard, or has seemingly outlandish claims, it’s gotta be snake oil. I started doing a little research and read a lot of good things about Amsoil, and saw some interesting tests on YouTube as well. The ones that really convinced me to try it were Dan Watson ( he has some great videos on YouTube explaining the different types of motor oils, and differences between the different groups) and also 9th Gen Accord on YT. I figured, what the hell? I’ve got to give this stuff a try. I will say this, and this is probably true for most of us on this board that do our own maintenance and repairs, or are diehard car guys that are really “in sync” with our cars, but I could tell a difference going from one oil to the other. My engine seemed to run really silky smooth, and quiet on the Pennzoil platinum euro. My car seemed to “like it,” if you will. When I switched to the Liqui Moly, I could tell a difference right away. My engine seemed to be a little more sluggish. Almost like the oil was heavier than a 5w-40. I was a little disappointed to be honest, although based on the UOA it actually did quite well. When I filled up with Amsoil for my current OCI, I got back that same feeling that I had when I ran the the Pennzoil. Do you have any idea what group that this particular oil I’m using belongs to? When I called them and asked they told me it it is a true, 100% synthetic, but they wouldn’t tell me if it was a group four or five. Last edited by IraHayes; 10-30-2019 at 04:12 PM.. |
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10-17-2019, 06:43 AM | #8 | ||
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Starting TBN is defined by the underlying ACEA specification. MORE is not better. Over addidized oils can cause problems on modern engines (ex Timing chain wear, poison emissions systems). Some oils with a high starting TBN experience a faster drop than comparative oils with a lower starting TBN. Some advanced AW additives do not show up in TBN analysis. You really want to know the TBN/TAN ratio. Base oil is not everything. For example there are PAO LL98 oils which cannot meet the performance requirements of LL01. There's no such thing as 100% PAO automotive engine oil because it would harden the seals and cause other issues. It's why all oils are a blend of base oils, AW additives, viscosity index improves, etc. Shop certs and price. Oh and if one is concerned about NOACK then buy BMW TPT 5w30. It has a NOACK of 6. http://pqiadata.org/BMW_5W30.html
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10-24-2019, 06:05 PM | #9 |
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Report looks promising. i'm running 5w-40 molygen in my current fill and plan to swap it out at 6k OCI. Perhaps sooner since I'll be running on track this time and am considering running fresh fluids since I'm right at the 5k mark right now on my current fill.
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10-25-2019, 08:53 AM | #10 | |
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There will be more comparison tests published of their oil against popular competitors. These will always be done to an ASTM standard test, not a home grown test. At one time competitors griped openly but shut up when challenged, Red Line and Penzoil were a couple. |
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11-08-2019, 05:49 PM | #11 | |
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Last edited by Axis527; 11-08-2019 at 05:51 PM.. Reason: Grammar and clarity |
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10-08-2020, 11:31 AM | #12 |
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Hey OP, any updates on this? Currently running Liqui Moly Top Tec 4200 5w30 but thinking about switching over to Molygen 5w40.
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10-08-2020, 11:44 PM | #13 | |
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My stock N55 has 135,000 miles on it and significant time on the track. Is Liqui Moly 5w-40 going to let me engine last 300,000 miles instead of 200,000? Who cares at that point. It would be a 10 year old track car at that point. |
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10-09-2020, 11:47 AM | #15 | ||
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10-10-2020, 08:34 AM | #17 | |
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Of course back then although Castrol didn't sell 0w40 in the US it was sold in Europe (BMW branded 0w40) and users also mentioned oil consumption.
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