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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-22-2009, 01:54 AM   #201
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And these are the same idiots on all the BMW forums whingeing about having sludge. You have a lot to learn.
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Old 04-05-2009, 05:06 PM   #202
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Thank you so much for all the valuable info Cary. I really appreciate it. The only problem is, I can't seem to find 0w-40 in any stores here ( I live in Western Montana). Wal Mart, O'reilly, and carquest do not have it. I'm looking online to see if I can order it somewhere
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Old 04-05-2009, 06:31 PM   #203
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I see a lot of brands discssed here, mostly the quality products worthy of the vehicle it is being used in.

However no mention of Royal Purpal. Does anyone have any comments on this product and how it compairs with the Mobil 1 0-W40? Is the Supersinth similar to the Synterlec additive package?
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Old 04-05-2009, 07:53 PM   #204
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I see a lot of brands discssed here, mostly the quality products worthy of the vehicle it is being used in.

However no mention of Royal Purpal. Does anyone have any comments on this product and how it compairs with the Mobil 1 0-W40? Is the Supersinth similar to the Synterlec additive package?
Royal Purple has a new 0w-40 oil that is similar to Mobil 1 0w-40 and has appropriate viscosities and certifications for use an a non-M E46.
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Old 04-05-2009, 10:32 PM   #205
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phlfly you have made the clasic mistake most make, 5W30 is not a viscosity with a set HTHS rating, 'it covers a wide range of viscosities and HTHS ratings.' So again most 5W30's don't meet the spec for your engine. It just needs to meet ACEA A3,B3 and LL01 written on the bottle. This means a minimum viscosity of 12.0 cSt @100C and a minimum HTHS of 3.5. M1 5W30 for example is only 10.9 cSt @100C, and HTHS is 3.01. Now do you understand?
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Old 04-06-2009, 12:25 AM   #206
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phlfly you have made the clasic mistake most make, 5W30 is not a viscosity with a set HTHS rating, 'it covers a wide range of viscosities and HTHS ratings.' So again most 5W30's don't meet the spec for your engine. It just needs to meet ACEA A3,B3 and LL01 written on the bottle. This means a minimum viscosity of 12.0 cSt @100C and a minimum HTHS of 3.5. M1 5W30 for example is only 10.9 cSt @100C, and HTHS is 3.01. Now do you understand?
I have some bottles of an LL-04 oil and it has a viscosity at 100C of 11.4 cSt.
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Old 04-06-2009, 01:47 AM   #207
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Here's some interesting information. We can all now run 30K miles before we change our oil. Also, the BMW transmission oil is spec'd to outlast the transmission, so this guy recommends we replace our transmission before we change the transmission oil!!

http://forum.e46fanatics.com/showthr...=592980&page=6

Hilarity.
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Old 04-06-2009, 01:58 AM   #208
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Here's some interesting information. We can all now run 30K miles before we change our oil. Also, the BMW transmission oil is spec'd to outlast the transmission, so this guy recommends we replace our transmission before we change the transmission oil!!

http://forum.e46fanatics.com/showthr...=592980&page=6

Hilarity.


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Old 04-06-2009, 04:04 AM   #209
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Your right of course, I should have realised GN knows all and we are all idiots. I bow down to the new oil guru of E46Fanatics. Long may he reign.
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Old 04-06-2009, 10:41 AM   #210
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There is a lot of good info. on these posts, and it's good to know that most of us really care about our cars. While reading through, I was reminded of a friend of mine that is a Navy engineer. We both ride motorcycles and argued about oil all the time. He had a Honda with 90,000 miles on it. That's a LOT of miles for a motorcycle, and he rode it like he stole it. He thought I was annal about oil for no reason. He said in his training at Georgia Tech, and in the Navy, he has never expericeced, or heard of a bearing failure that was the result of the oil used, or how old it was, as long as it was the right weight. As long as the surface has oil, it's lubricated. You either have lubrication or you don't. He would buy whatever oil was on sale.
Not my opinion, but I could never convince him otherwise.
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Old 04-07-2009, 03:02 PM   #211
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For some real expert info see: http://www.machinerylubrication.com/
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Old 04-20-2009, 10:31 AM   #212
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Boo. I gotta flush my oil.
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Old 01-14-2011, 10:40 AM   #213
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Pentosyth motor oil is it approved for bmw's???

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I have been crusing through this site and noticed there is a lot of misinformation and confusion about oil. Here are a few things you should know about oil for BMW's:

1) All new BMW's require synthetic. As far as weight, only certain production dates of M3's and M5's require the use of Castrol TWS 10w-60.

2) The Factory BMW Synth 5w-30 is a version of Castrol TXT Softect sold overseas. A few important things about the BMW oil a) it is a Group III hydrocracked oil which cannot be called synthetic in Europe, b) it is a heavy 30 weight (30 weight can run from 9.3-12.5cst@100c, the BMW oil is about 12.2cst), c) it is a ACEA A3 oil which means that it is approved for longer change intervals and has a HTHS (High Tempurature High Shear) measured at 150c of greater than 3.5.

3) In the US, the only Group IV PAO Synthetics that are available are 1) Mobil 1, 2) Amsoil (but not the Xl-7500), 3) Royal Purple, and 4) German Castrol 0w-30 (it has the red label and says on the back, "Made in Germany). Redline is a Group V PolyEster based oil. All other Castrol, Quaker State, Pennzoil, Valvoline "synthetics" are a Group III hydrocracked oil. It is debated how much better Group IV base oils are than group III, but generally they are considered better.

4) When looking for oil for any BMW that does not require Castrol TWS 10w-60, you want to purchase an oil that has either/both of the following ratings, a) ACEA A3, or b) BMW LL-98 or LL-01.

5) Note that Mobil 1 0w-30, 5w-30, and 10w-30 are NOT ACEA A3 or BMW LL approved oils. This is because they all are thin 30 weight oils (approximately 9.8-10 CST@ 100c) and have HTHS of approximately 3.1. Mobil 1 0w-40 and 15w-50 are A3 rated and the Ow-40 is BMW LL-01 approved. For 99% of climates and users 0w-40 or 5w-40 is the appropriate grade. There are some 0w-30 and 5w-30 oils (like the BMW 5w-30) that are forumlated on the heavier end of the 30 weight scale and are accordingly rated A3. These oils will work well also. LOOK FOR THAT ACEA A3 rating. If the oil doesn't have it, pass on it.

6) Some people seem confused about how oil thickness is measured. The first number (0W, 5w, 10w, 15w, etc) is a measurement of how thick the oil is at tempuratures of -35c- -20c (depends on the grade). The lower this first number the thinner the oil is at LOW tempuratures. The second number (30, 40, 50) refers to oil thickness at 100c (operating tempurature). 30 weight can be from 9.3-12.5 cst, 40 weight from 12.6-16.2 cst, 50 weight from 16.3-22cst (approximate). So you can have two oils, one called a 5w-30 (i.e. bmw oil) another 0w-40 (Mobil 1) that are very similar thicknesses at operating tempurature. Compare this to Mobil 1 Xw-30 which is close to a 20 weight oil at 100c. For more information here is a link with exact numbers http://www.bobistheoilguy.com/visc.html

7) BMW's recommended interval of 12,000-15,000 miles is to long. Used oil analysis has shown the BMW oil is generally depleted at 10,000 miles. Running it longer results in excess wear. It is highly recommended that you change your oil once between each BMW recommended interval (approx 7000-7500 miles). If you want to run your oil the BMW recommended interval, I would suggest that you use Mobil 1 0w-40 or Amsoil 5w-40 and change the oil filter at 7500 miles. I would encourage a full oil change at 7500 if you want your engine to last.

8) If you want to spend a few hours learning about oil, go to bobistheoilguy.com

Cary
Pentosyth motor oil, is it safe to use and approved by BMW?
As they stated on the site as: (Pento High Performance II fully synthetic 5W30 motor oil. 5 liter bottle. Meets the following manufacturer specifications: BMW Long Life 01, GM/Opel GM ll-B-025, Audi/VW 502.00, 503.01, 505.00, Mercedes Benz 229.5.)

I want to be sure if this is safe and proper for me to use on my (01 BMW X5 4.4i
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Old 01-14-2011, 10:44 AM   #214
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Pento High Performance II fully synthetic 5W30 motor oil. 5 liter bottle. Meets the f

Pento High Performance II fully synthetic 5W30 motor oil. 5 liter bottle. Meets the following manufacturer specifications: BMW Long Life 01, GM/Opel GM ll-B-025, Audi/VW 502.00, 503.01, 505.00, Mercedes Benz 229.5.
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Old 01-14-2011, 10:45 AM   #215
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Sure, go ahead. It will not harm anything. This revived two-year-old thread, and anything posted since April '09 regarding oil, means nothing. Thanks for searching, though. You don't really need to use BMW-approved oils, just about anything close will do. Happy motoring!
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Old 02-08-2011, 01:14 AM   #216
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What about the Bentley manual's recommendation for 15w 50 for use in hot climates? Or is Mobile 1 0w-40 good enough when it's 118 in Vegas
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Old 02-08-2011, 01:33 AM   #217
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What about the Bentley manual's recommendation for 15w 50 for use in hot climates? Or is Mobile 1 0w-40 good enough when it's 118 in Vegas
Unless you change your oil twice or more per year, I'd say just stick with the Mobil 1 0w-40 or any of the other BMW approved oils year round.
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Old 02-08-2011, 01:57 AM   #218
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Unless you change your oil twice or more per year, I'd say just stick with the Mobil 1 0w-40 or any of the other BMW approved oils year round.

Thanks for the info!

Correct me if I'm wrong but the Mobile 1 15w50 is approved?

I will probably do 4 or 5 changes this year so that's why I was thinking of switching to the 15-50 during the summer. (i.e. May - Sept for NV/AZ).

On a side note, I got my first oil analysis kit so I'll be sending this past oil change in. Hopefully that will give me some guidance.

-Dan
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Old 02-08-2011, 02:13 AM   #219
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Thanks for the info!

Correct me if I'm wrong but the Mobile 1 15w50 is approved?

I will probably do 4 or 5 changes this year so that's why I was thinking of switching to the 15-50 during the summer. (i.e. May - Sept for NV/AZ).

On a side note, I got my first oil analysis kit so I'll be sending this past oil change in. Hopefully that will give me some guidance.

-Dan
Mobil 1 15w-50 won't be listed as a BMW approved oil because it doesn't meet all of BMW's strict requirements for a year-round use oil. For example, it would be pretty bad for the people up in minnesota with like -14 degree weather.

I don't really have enough experience or info to say much more beyond that. If you go over to the forums at www.bobistheoilguy.com you could probably get a good answer for your unusual situation.
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Old 02-08-2011, 03:50 AM   #220
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Originally Posted by swordsman11868 View Post
Thanks for the info!

Correct me if I'm wrong but the Mobile 1 15w50 is approved?

I will probably do 4 or 5 changes this year so that's why I was thinking of switching to the 15-50 during the summer. (i.e. May - Sept for NV/AZ).

On a side note, I got my first oil analysis kit so I'll be sending this past oil change in. Hopefully that will give me some guidance.

-Dan
So you drive like 30-50K miles a year? Or are just trying to be good to your car and change it every 3K miles?

If the latter, you're really being bad to your car...should change sometime after 7-8K miles and before 15K miles...though most, including me, would probably say around 10K is the most you want to run with it in...but the oil should be fine until the computer says to change at 15K.

Many who go to 15K, though, change filter half way through (though I don't think they need to).

Doug
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