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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 03-29-2010, 03:30 PM   #21
mujjuman
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Originally Posted by fibonacci00782 View Post
This is definitely the wrong weight oil. I do not suggest you follow this.
Maybe supercharged takes tht... But I can't imagine why
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Old 03-29-2010, 03:36 PM   #22
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I need to know what is the heaviest oil I can run in my bmw. My car is using a ton of oil. I am replacing the ccv valve and hopefully that fixes the problem. If it does not I need to know a back up plan before I even think about replacing the valve stem seals. I have my eye on this oil



This oil is 5w-40. I currently use it in my motorcycle. Im sure you guys have hear of it before. They also make a 15w-40 version which I think will be way too thick,

I am willing to try this oil on my car. Please let me know of any side affects that may occur as a result.

95k miles 01 330ci

I am losing as much as a quart every 500 miles. maybe less. No visible smoke out of the exhaust.
5w40 is fine
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Old 03-30-2010, 01:06 AM   #23
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5W40 is not 'the wrong weight oil' It's in the owners manual fer christ's sake!
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Old 03-30-2010, 01:08 AM   #24
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5W40 is not 'the wrong weight oil' It's in the owners manual fer christ's sake!
if you are referring to fibonacci's post, he was referring to a post made about someone with a 330xi S/C who uses 10w60
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Old 03-30-2010, 01:57 AM   #25
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I've used 40W70 in vehicles and 25W70 for 5yrs in my Mazda turbo. Wouldn't use 10W60 in a non M E46 bit it won't do any harm.
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Old 03-30-2010, 06:50 AM   #26
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I'm using Castrol 10w60 (the only way to go) on my Supercharged 330XI.
That oil is actually cheaper than the 5w40 "long life oil" from Castrol.
Castrol Edge Sport 10W60? Good stuff....
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Old 03-30-2010, 06:56 AM   #27
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If you are trying to do a band aid approach: Mobil1 0W40 plus Lucas synthetic oil treatment. This will slow down your oil consumption enuf to finally get the right repair done. Chas
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Old 04-05-2010, 05:07 PM   #28
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i use Mobil1 5w50,the oil consuption is 1L for 4000km
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Old 04-05-2010, 05:44 PM   #29
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i use Mobil1 5w50,the oil consuption is 1L for 4000km
Wow, that is way too heavy an oil.
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Old 04-05-2010, 06:29 PM   #30
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First, there are other qualities of oil besides the weight...and evidently, according to people who know far more than me, the other specs bmw gives for our cars matter too. Look in your manual...there are other specs (forget all the names) but it's not just weight.

Also, there's a benefit that having a long life oil in the car for a long time that you do not get with non-synthetic, or even with synthetic of incorrect spec changed more often coz you're old school and believe in the 3000 mile change interval of old.

There's a film that builds up over time...not if you change frequently.

There's also, I've heard, an issue with heat capacity. As oil breaks down, it develops a greater capacity to pull heat from engine. So like everything, there are trade offs. But me, I think my car is pretty amazing as designed and am quite sure the BMW engineers thought a lot about what's the best oil for it...going thicker to decrease leaking is putting the cart ahead of the horse. The oil thickness isn't causing the leak or curing it. You've got a leak, or your burning more than you should...fix it and use the right oil

BTW, my 200K mile 328i doesn't burn any oil...and only dripped about 3 drops/day at most. Now, after my fixing it over a long three-day diy...better not drip anything...

But, drips are good...they tell you you need to fix something!

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Old 04-05-2010, 07:30 PM   #31
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I've used 40W70 in vehicles and 25W70 for 5yrs in my Mazda turbo. Wouldn't use 10W60 in a non M E46 bit it won't do any harm.
Upon what do you base this opinion? Those oil's are definitely too heavy for any turbocharged application. Oil flow is the only thing that is cooling that turbocharger, so when you start up the vehicle until it heats up and starts flowing the turbocharger will be getting too hot and will GREATLY reduce its life, if not kill it very soon. The bearings can't handle that kind of heat!

All due respect, the fact that you were able to get 5 years out of a mazda motor doesn't necessarily mean that your suggestions are good ideas.
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Old 04-05-2010, 07:33 PM   #32
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Originally Posted by ChasCan View Post
If you are trying to do a band aid approach: Mobil1 0W40 plus Lucas synthetic oil treatment. This will slow down your oil consumption enuf to finally get the right repair done. Chas
Use the M1, but not the Lucas. Try this:

www.auto-rx.com

Your engine needs a cleaning .
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Old 04-05-2010, 11:29 PM   #33
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Use the M1, but not the Lucas. Try this:

www.auto-rx.com

Your engine needs a cleaning .
just curious... cleaning the engine will reduce oil consumption?
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Old 04-06-2010, 02:27 AM   #34
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fibonaccio best you stick to what you know about. As a founding member of BITOG that has over 30,000 worldwide members I know a bit about oil. You are using U.S references and you have CAFE which affects oil viscosity, nowhere else has CAFE. Most turbo engines here run 25W70 or 5W50,
0/5W20 doeswn't exist and XW30 is rarer than rocking horse shite.
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Old 04-06-2010, 07:30 AM   #35
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just curious... cleaning the engine will reduce oil consumption?
Yes. To what extent? That depends on the level of "dirtiness". This product will NOT miraculously fix any mechanical problems that lead to consumption. But will it clean out the ring packs offering better cylinder sealing and less blow-by? Yep. Will it clean crud from under/behind/arouns seals that are leaking? Sure will. Will it take you from using a qt./1K to zero after you pour it in? No.

I've used it for years and experienced these results first hand. Read the site for a more detailed explanation.
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Old 04-06-2010, 08:36 AM   #36
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Was going to comment more, but OP closed his account! This thread is useless!
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OP: I am sure your English Writing teacher told you this every year, regardless of who s/he was: writing is important. Others will either respect you or ignore you or piss on you if you type like a moron. This isn't an instant message site; it's a forum. We aren't texting each other right now. We are typing messages. Type regular English and people are more likely to respond.
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Old 04-06-2010, 01:55 PM   #37
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Yes. To what extent? That depends on the level of "dirtiness". This product will NOT miraculously fix any mechanical problems that lead to consumption. But will it clean out the ring packs offering better cylinder sealing and less blow-by? Yep. Will it clean crud from under/behind/arouns seals that are leaking? Sure will. Will it take you from using a qt./1K to zero after you pour it in? No.

I've used it for years and experienced these results first hand. Read the site for a more detailed explanation.
aww man. Thanks for the info though!! I do seem to have quite a bit of blowby
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Old 04-06-2010, 02:10 PM   #38
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Wow, that is way too heavy an oil.
yes,but i change oil and filter every 10 000km
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Old 04-06-2010, 02:47 PM   #39
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yes,but i change oil and filter every 10 000km
I'm more concerned about proper lubrication
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Old 04-06-2010, 03:24 PM   #40
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my teory is have a syntetic oil and change it every 10-15 000km,long life oil is rubbish(this oil is only good to kill the motor so fast)

20 or 40 years old cars are today on the streets because peoples changes oil so fast than today
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