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      12-27-2016, 08:24 AM   #23
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You should try Castrols high mileage version. It's a lot better and it reduced how many times I had to top it off. https://www.walmart.com/ip/181963394...263094&veh=sem

Plus it's $26 for 5qts from Walmart
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      12-27-2016, 09:10 AM   #24
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Quote:
Originally Posted by 6IX-F10-N52 View Post
Cold starts are a little rough with a 5W oil, but fact being that my car is stored in a heated condo garage, I feel like I dont need a 0w oil despite my conditions.

My dad has a 2015 mazda 6, which as you all may know is spec'ed for 0w-20 oil. the difference putting 5w-30 into the engine made was simply astounding. the engine felt completely rejuvenated particularly when winding out past 4000rpm.. alot more refined and smooth. it was a wonderful "upgrade." car burns alot less oil with this weight as well.

the cold start was nothing to be concerned about compared to the 0w-20 which was previously used. the oil flowed the same on initial startup.

I will always use 5w-30, 5w-40 oil because it fills/protects the bearings better and is much more resistant to high heat and abusive driving conditions which i sometimes subject the car to.
I didn't even know they made a -20 oil, lmaooo. That sounds about as thick as my chap-stick.

With that said however, seeing as how you have an N52, -30 is obviously most ideal for you as it's specifically designed to operate at 200F-220F efficiently. Whereas -40 is designed to operate (N54/N55) at 240F-250F efficiently. However (in case there might be a less knowledgeable member reading), depending on your vehicles spec, a higher 5-XX number does not always equate to outright "better" performance, with the exception of -20 (which is simply trash) for obvious reasons. Reason being is because a thicker oil takes longer to get to operating temperatures and when doing spirited driving, just as how it takes longer to warm up, it takes longer to dissipate heat as well. -40 wouldn't necessarily hurt, but just keep the aforementioned in mind.

That's why many M3 owners opt for a -50 or even -40 for track days, as the OE spec -60 can cause oil temps to stay hot for far too long.
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      12-27-2016, 10:23 AM   #25
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6IX-F10-N52: Please read these and then review your posts.

https://bobistheoilguy.com/motor-oil-101/#
and
https://bobistheoilguy.com/putting-t...nto-viscosity/
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      12-27-2016, 10:50 AM   #26
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Quote:
Originally Posted by YouAreMyWorld View Post
I didn't even know they made a -20 oil, lmaooo. That sounds about as thick as my chap-stick.

With that said however, seeing as how you have an N52, -30 is obviously most ideal for you as it's specifically designed to operate at 200F-220F efficiently. Whereas -40 is designed to operate (N54/N55) at 240F-250F efficiently. However (in case there might be a less knowledgeable member reading), depending on your vehicles spec, a higher 5-XX number does not always equate to outright "better" performance, with the exception of -20 (which is simply trash) for obvious reasons. Reason being is because a thicker oil takes longer to get to operating temperatures and when doing spirited driving, just as how it takes longer to warm up, it takes longer to dissipate heat as well. -40 wouldn't necessarily hurt, but just keep the aforementioned in mind.

That's why many M3 owners opt for a -50 or even -40 for track days, as the OE spec -60 can cause oil temps to stay hot for far too long.
in the summer, when I had my engine cover on my temperatures would be at 240-260f all the time. with the engine cover removed, I see roughly 210-230f depending on the temperatures outside. since I run without my engine cover during the warm weather, perhaps it makes sense to switch back to 5w-30 oil? but then again, many oils shear down a grade (40 > 30) after about 3000 miles or so.

bottom line, the N52, N54/N55 all recommend you use 5w-30/5w-40, and that these weights are safe to use in all weather conditions (owners manual) being that my car is stored in a heated garage, I see no use in adding oil not specified by BMW.

also, the thing you mentioned about the m3 guys - wouldnt a thicker oil weight lower temperatures? I noticed a reduction in oil temps when switching from 30 to 40 weight.
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      12-27-2016, 11:19 AM   #27
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Fundamental physics....
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      12-27-2016, 01:00 PM   #28
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Quote:
Originally Posted by 6IX-F10-N52 View Post
also, the thing you mentioned about the m3 guys - wouldnt a thicker oil weight lower temperatures? I noticed a reduction in oil temps when switching from 30 to 40 weight.
Specifically for track conditions in which your vehicle (M3) would practically live at 7,000rpm and above far longer than any amount of spirited street driving could replicate, the oil would essentially "heat soak" over said extended period, thus making it dissipate heat far slower than what would be generally be ideal. You want oil temperatures to be consistent; when such a thick oil reaches its "apex" and stays there for such a long period (during track), it gets extremely difficult to maintain consistency for the ideal temperature.

For everyday use, yes you're right, you will notice generally lower oil temperatures (-60), that's why it's the recommended oil
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      12-29-2016, 08:40 PM   #29
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Quote:
Originally Posted by floydarogers View Post
No, the 5W-xx oils don't protect better because that number has NOTHING to do with "high heat and abusive driving conditions". The -30 or -40 is what does that.
5W oil is thicker then 0w weight. the oil cannot have the same heat resistance and protection if it is fundamentally a thinner oil.

0w-20 will not offer the same protection compared to 5w-20.
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      12-29-2016, 08:45 PM   #30
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Quote:
Originally Posted by 6IX-F10-N52 View Post
5W oil is thicker then 0w weight. the oil cannot have the same heat resistance and protection if it is fundamentally a thinner oil.

0w-20 will not offer the same protection compared to 5w-20.
Heat resistance would be the same but 0w would offer bettet lubrication when cold so 0w-20 would be better choice.
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      12-29-2016, 10:09 PM   #31
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Quote:
Originally Posted by 6IX-F10-N52 View Post
5W oil is thicker then 0w weight. the oil cannot have the same heat resistance and protection if it is fundamentally a thinner oil.

0w-20 will not offer the same protection compared to 5w-20.
Here's a question for you. Why not just buy straight 20, 30 or 40 weight oil then?

That's where your logic is taking you.
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      12-29-2016, 11:28 PM   #32
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Quote:
Originally Posted by 6IX-F10-N52 View Post
5W oil is thicker then 0w weight. the oil cannot have the same heat resistance and protection if it is fundamentally a thinner oil.

0w-20 will not offer the same protection compared to 5w-20.
You're ignoring the fact that, when the engine is at operating temperature (you do warm up the engine before stomping on it on the track, don't you?) both are 20 weight. That's what the 20 means, after all. The 5W and 10W only apply at relatively low (100F or lower) temperatures.

You really need to read the references I and others have given you.

Last edited by floydarogers; 12-29-2016 at 11:38 PM..
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      12-30-2016, 12:17 AM   #33
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He is just too busy sharing his wealthy knowledge in other threads such as "dirty oil causes rough idle", kind of knowledge. So he doesn't have any time to listen to any of us.

Like he said though, he has the fully calibrated 8th sense and is capable of visual analysis of oil shear, so leave him be.

/checkout
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      12-30-2016, 06:46 AM   #34
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Quote:
Originally Posted by floydarogers View Post
I'm a bit off-put by your continuing statements like this. How do you know? You've never indicated you've had any analysis done on any of your oil. You say it seemed "thin" (in other threads). You say it appears "worn". You say lots of things with apparently no factual basis or supporting data.

In fact, Castrol (and others under discussion) all wear about the same, and all have adequate viscosity at the end of their lifetimes using BMW's recommended OCI. All the Blackstone reports I've read (here and other forums, and on BITOG) show that.

Come on, now, where's your PROOF? I'll show you mine: here's my Blackstone report from just under 13K miles on my 335d (it's a slightly different Castrol than the LL-01 you're talking about because it's a diesel, and 13K is the recommended OCI). Note the viscosity numbers down near the bottom. Attachment 1546926
In your report is says SLX professional LL03? As far as I know it's called edge but it maybe is called slx in a few countries. And why do you drive a VW recommended oil? LL03 isn't an approved oil for BMW.
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      12-30-2016, 11:25 AM   #35
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Quote:
Originally Posted by sprp85 View Post
He is just too busy sharing his wealthy knowledge in other threads such as "dirty oil causes rough idle", kind of knowledge. So he doesn't have any time to listen to any of us.

Like he said though, he has the fully calibrated 8th sense and is capable of visual analysis of oil shear, so leave him be.

/checkout
good you checked out, not like you're providing any half useful information on here GTFO lol

if you guys have nothing better to do but argue oil weights on this forum as if it hasnt been done 50 times already, go elsewhere.

I want to know which brands of 5w-40 oil is good. what do you guys think of liquid moly

for the fourth time, BMW specifies 5w30 or 5w40 oil for these engines. I wont be using anything else.
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      12-30-2016, 11:59 AM   #36
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Quote:
Originally Posted by Sobeus View Post
In your report is says SLX professional LL03? As far as I know it's called edge but it maybe is called slx in a few countries. And why do you drive a VW recommended oil? LL03 isn't an approved oil for BMW.
WTFC if BMW approved it or not? Get over yourself!
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      12-30-2016, 12:45 PM   #37
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Quote:
Originally Posted by feuer View Post
WTFC if BMW approved it or not? Get over yourself!
yea jesus christ, if i hear this BMW approved shit one more time im going to flip. bottom line, if you do research the n52, n54, n55 all specify that 5w-30/5w-40 is suitable for all weather conditions and I dont think anything else should be used.
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      12-30-2016, 02:37 PM   #38
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Quote:
Originally Posted by 6IX-F10-N52 View Post
yea jesus christ, if i hear this BMW approved shit one more time im going to flip. bottom line, if you do research the n52, n54, n55 all specify that 5w-30/5w-40 is suitable for all weather conditions and I dont think anything else should be used.
I switched to Motul 5w-30, like it a lot! ...but its not 'BMW Approved' lol

Quote:
Originally Posted by r4dr View Post
8100 X-Clean 5W-30 is LL-04 approved, not LL-01. In the US you should be using the LL-01 oil, 8100 X-Cess 5W-40.

LL-04 is a Euro thing, because their fuels have a different composition. I believe it has to do with the sulfur.
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      12-30-2016, 03:18 PM   #39
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Quote:
Originally Posted by 6IX-F10-N52 View Post
good you checked out, not like you're providing any half useful information on here GTFO lol

if you guys have nothing better to do but argue oil weights on this forum as if it hasnt been done 50 times already, go elsewhere.

I want to know which brands of 5w-40 oil is good. what do you guys think of liquid moly

for the fourth time, BMW specifies 5w30 or 5w40 oil for these engines. I wont be using anything else.
Go to BITOG. this is not the appropriate forum determine what the best 5w-xx is.
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      12-30-2016, 03:32 PM   #40
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Quote:
Originally Posted by feuer View Post
WTFC if BMW approved it or not? Get over yourself!
Oooops so sorry!

Last edited by Gaspo; 12-30-2016 at 03:54 PM..
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      12-30-2016, 03:38 PM   #41
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Quote:
Originally Posted by 6IX-F10-N52 View Post
yea jesus christ, if i hear this BMW approved shit one more time im going to flip. bottom line, if you do research the n52, n54, n55 all specify that 5w-30/5w-40 is suitable for all weather conditions and I dont think anything else should be used.
Ok so,so, sorry oil gurus!! Do I write that 5W30 or 5W40 should be any kind of a problem? Just woundering why use a castrol VW approved 5W30 oil when there is a BMW approved oil in 5W30 frome castrol. But everyone do what they want. Sorry if I did someone upset.

Last edited by Gaspo; 12-30-2016 at 03:53 PM..
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      12-30-2016, 03:41 PM   #42
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Quote:
Originally Posted by Sobeus View Post
Ok so,so, sorry oil gurus!! All 5w30/5w40 oils is the same.
i dont understand whats with everyone repping 0w its not the same as a 5 at operating temp..
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      12-30-2016, 04:00 PM   #43
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Quote:
Originally Posted by Black n54is View Post
I switched to Motul 5w-30, like it a lot! ...but its not 'BMW Approved' lol
Cool!
Btw motul has two 5W30 BMW approved.
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      12-30-2016, 05:38 PM   #44
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Interesting to note that some 0w-30 and 0w-40 actually outperform their respective 5w oils @ 40c and 100c, as in their viscosity is actually thicker.

Of course, being opposed to 0w, you wouldn't be interested in these magical oils.
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