[MTK24]

[QUOTE=xxMike61;22534083]

Is there any benefit in running 10w40 vs 5w30 or 0w40?

10w40 is thicker and has a different temperature viscosity. Really no major difference

[dleccord]

What causes knock or spun bearings in the engine?

[YouAreMyWorld]

Originally Posted by dleccord

What causes knock or spun bearings in the engine?

Generally oil starvation and or prolonged oil change intervals. I strongly believe these engines need to have an oil change every 5k-7k (at most) miles on pump and every 3k miles on E85/High E85 mixes--especially when tuned and should be running 0w40. Preferably Rotella T6

Other causes can be insufficient logging when tuned to catch 'timing pull anomalies', inept tuning, too much boost for given octane, and unfortunately the ago old... sometimes shit happens and it just plain out sucks for everyone.

[bbnks2]

Originally Posted by YouAreMyWorld

Generally oil starvation and or prolonged oil change intervals. I strongly believe these engines need to have an oil change every 5k-7k (at most) miles on pump and every 3k miles on E85/High E85 mixes--especially when tuned and should be running 0w40. Preferably Rotella T6

Other causes can be insufficient logging when tuned to catch 'timing pull anomalies', inept tuning, too much boost for given octane, and unfortunately the ago old... sometimes shit happens and it just plain out sucks for everyone.

Someone just posted their Blackstone results of their E85 car after 9,500 miles and the oil is still fine. Blackstone recommended running out to 12k miles for the next sample. In fact, this person was also using LiquiMoly... I don;t know why the report says BMW 5-30 was used... So, please don't post "feelings." Also, previous posters should stop wasting time with LiquiMoly conspiracy theories lol. It's probably one of the few LL-01 oils I'd actually use over Castrol Edge EU.



10w-40 in a street car is a terrible idea especially in cold climates. There are no LL-01 oils in 10w-40 and for good reason. The oil is much thicker on cold starts and can actually be the source of starvation for many running incorrectly weighted oils. You put extra stress on the components trying to pump thick oil. Pressure will be high and flow from the oil pump will suffer.

N5x engines are not loose by any means. These engines have very tight (modern) tolerances which makes E85 a completely moot point. Cylinder to piston wall clearance is .0000, for example. Not a chance anyone should have any fuel dilution problems if there are no underlying mechanical issues. I have never seen any oil reports of N5x cars with fuel dilution issues except ones with failed injectors and owners who don't think that's a big enough issue to replace them LOL

[JETmn]

Originally Posted by bbnks2

Also, previous posters should stop wasting time with LiquiMoly conspiracy theories lol. It's probably one of the few LL-01 oils I'd actually use over Castrol Edge EU.

No conspiracy theories at all, just data. I remember seeing 5 cars recently with spun bearings. 3 liquimoly, 1 mobil 1 and one off brand I believe. I am just going off recollection, but pretty sure that is right. It is a very small sample size so I am not putting much weight in it, but something to keep an eye on. If I get some time I will go back and start keeping a tally.

Also, you tell people to stop posting "feelings", then you say you like Liquimoly so that is certainly not the problem. LOL I do agree with the rest of what you said.

[Ozzie335i]

Originally Posted by 335MRod

Honestly, I think there a couple factor which play a role. For Diox and me we both had identical set ups, both on liqui Molly and custom e30 tunes. My car had 45k and Diox I believe was under 65k, this is fairly low milage and shouldn’t have happened.

MRod, you said your cars are both fully modded. Do either of you have the colder oil thermostats?

[dleccord]

Is there a handbook that shows you how to read logs if you’re tuned? Are COBB tunes bad because they run rich?

[JoshC222]

Originally Posted by 335MRod

Doesn’t sound like a knock to me either. My mechanic got back to me yesterday and it’s official , my 11’ 335 w/ 45k miles has a spun rod bearing.. honestly, my best adavise to all would be stick to jb4. Too much coincidence my buddy and I both identical setups and tune, both with spun rod bearings.

Just curious: other than the coincidence you mentioned, what makes you think that tune played a role in this? Knock?

[YouAreMyWorld]

Originally Posted by bbnks2

Someone just posted their Blackstone results of their E85 car after 9,500 miles and the oil is still fine. Blackstone recommended running out to 12k miles for the next sample. In fact, this person was also using LiquiMoly... I don;t know why the report says BMW 5-30 was used... So, please don't post "feelings." Also, previous posters should stop wasting time with LiquiMoly conspiracy theories lol. It's probably one of the few LL-01 oils I'd actually use over Castrol Edge EU.

This is just about the unanimous consensus among those that are pushing 500whp+ and I'm someone heavily involved in the 'extreme' (not just FBO) modding/enthusiast aspect of this scene. If you're familiar with the other forums and Facebook groups for this platform tuning wise, you'd know that what I'm saying is nigh irrefutable.

I'll leave it at that, I'm not going to argue ad nauseum.

[weehe126]

JB4 is probably the reason for a decent amount of issues lol. A proper flash tune would be a much better option. I do agree that even a PS2 can cause issues due to power.

[dleccord]

Originally Posted by weehe126

JB4 is probably the reason for a decent amount of issues lol. A proper flash tune would be a much better option. I do agree that even a PS2 can cause issues due to power.

IIRC they all had tunes at one point or another. Most were JB4

[weehe126]

Originally Posted by dleccord

IIRC they all had tunes at one point or another. Most were JB4

I was just making a point from the poster above saying "only do a JB4". As if flash tunes were causing this.

[bbnks2]

Originally Posted by JETmn

Also, you tell people to stop posting "feelings", then you say you like Liquimoly so that is certainly not the problem. LOL I do agree with the rest of what you said.

No I left feelings out of it. I provided proof Liqui Moly Leichtlauf (2249) is a robust oil through a UOA. It also has a great spec sheet and it's LL-01 certified. It's not the problem. No feelings involved in that.

And yes, my own personal opinion is that I would consider using it over Castrol Edge EU if it were cheaper and more readily available. But, it's not, so there is 0 reason to have it shipped to me since there is nothing remarkable about it over other LL-01 oils.

[bbnks2]

Originally Posted by YouAreMyWorld

This is just about the unanimous consensus among those that are pushing 500whp+ and I'm someone heavily involved in the 'extreme' (not just FBO) modding/enthusiast aspect of this scene. If you're familiar with the other forums and Facebook groups for this platform tuning wise, you'd know that what I'm saying is nigh irrefutable.

I'll leave it at that, I'm not going to argue ad nauseum.

I am familiar with other groups and it's all filled with the same mob mentality bs that literally all data contradicts. None of these people you quote have any support for what they are saying beyond "but all the Facebook groups agree."

[dleccord]

Originally Posted by YouAreMyWorld

Generally oil starvation and or prolonged oil change intervals. I strongly believe these engines need to have an oil change every 5k-7k (at most) miles on pump and every 3k miles on E85/High E85 mixes--especially when tuned and should be running 0w40. Preferably Rotella T6

Other causes can be insufficient logging when tuned to catch 'timing pull anomalies', inept tuning, too much boost for given octane, and unfortunately the ago old... sometimes shit happens and it just plain out sucks for everyone.

what do you mean by oil starvation? is it because the oil level is low or the oil pump not being able to keep up?

[YouAreMyWorld]

Originally Posted by dleccord

what do you mean by oil starvation? is it because the oil level is low or the oil pump not being able to keep up?

Most often when the oil level is low. These cars burn/consume oil; a QT every 1-2k miles is plausible when FBO/FBO+ and most especially when coupled with driving habit.

[Turbod]

This sounds more like a noisy injector than rod knock.

[335MRod]

Originally Posted by YouAreMyWorld

Most often when the oil level is low. These cars burn/consume oil; a QT every 1-2k miles is plausible when FBO/FBO+ and most especially when coupled with driving habit.

definitely an interesting point but it couldn't be a cause for me since I changed oil less than 1k miles prior to spun rod bearing.

[335MRod]

Originally Posted by Turbod

This sounds more like a noisy injector than rod knock.

the noise became significantly louder and was confirmed by BMW mechanic

[Mean E92]

Originally Posted by 335MRod

the noise became significantly louder and was confirmed by BMW mechanic

So sorry dude. I know your exact pain. Maybe the N55 isn't as durable as the N54? I'm so surprised to see other people going though what I went though a year ago. This is so odd. I wish we had someone who is more knowledgeable to tell us what the deal is with this engine. I always used 0w40 LL01 Castrol in my engine and did it every 5k. Maybe it was the previous owner that skipped the oil changes? Still very confused to why is is happening to a lot of people. I was thinking about a lawsuit but I'm modded so I automatically would loose. One engine re builder told me that the N55 might have a oil pump that can't handle the power past stock power levels? All of this is speculation of course. Makes me want to pull my hair out man.

[dleccord]

Originally Posted by 335MRod

definitely an interesting point but it couldn't be a cause for me since I changed oil less than 1k miles prior to spun rod bearing.

Originally Posted by Mean E92

So sorry dude. I know your exact pain. Maybe the N55 isn't as durable as the N54? I'm so surprised to see other people going though what I went though a year ago. This is so odd. I wish we had someone who is more knowledgeable to tell us what the deal is with this engine. I always used 0w40 LL01 Castrol in my engine and did it every 5k. Maybe it was the previous owner that skipped the oil changes? Still very confused to why is is happening to a lot of people. I was thinking about a lawsuit but I'm modded so I automatically would loose. One engine re builder told me that the N55 might have a oil pump that can't handle the power past stock power levels? All of this is speculation of course. Makes me want to pull my hair out man.

do you know if aftermarket warranty can be purchased in case we get a spun rod bearing?

[amw896]

Originally Posted by dleccord

what do you mean by oil starvation? is it because the oil level is low or the oil pump not being able to keep up?

Running too thick of an oil can cause starvation because pressure builds too high and can't properly deliver oil fast enough to critical areas. Another factor is driving style - if you're heavily modded, running too thick oil and drive hard before your oil temps are optimal, then it's only your fault. I think driving styles need to be factored before blaming the n55.

I also run BM3 tune on stage2 and drive hard all the time but I always take proper steps beforehand. For the record, I run the bmw brand pennzoil 0w30 and have never burned a single quart. I monitor all gauges to the T before I open it up.