BMW B58 Engine Oil Recommendation

[kschachn]

That's not quite true. There is definitely an effect from the fuel but it is not directly connected to RON. It's possible that high AKI fuels happen to decrease LSPI frequency depending on region and formulation. For what it's worth, Lake Speed Jr. said that premium fuel decreased LSPI occurrence in tests he observed. This first paper linked showed a weak correlation.

https://www.jstor.org/stable/26273031

https://www.sae.org/publications/technical-papers/content/2018-01-1456/

Also check page 41:
https://aaltodoc.aalto.fi/server/api/core/bitstreams/f065d775-1419-4c98-aa52-24d32ef78830/content

And there have been numerous papers and articles since then that don't show a "weak" correlation. I guess I'm not convinced, considering the primary drivers are design, operation and the oil.

But thanks for the links, I have seen them before but forgot. One of the problems comes from the multiple ways in which the apparent octane rating can be achieved, it's not just the branching of the hydrocarbon molecule. It's throwing additional uncontrolled variables into the mix.

 

[lrk185]

Yea...........i'm gonna run motul x-clean gen 2 and call it a day. Thanks for the info guys!

 

[svenson]

for the b58tu its DI only, but you can run both with an auxiliary controller. All aftermarket intake manifolds for the b58 have bungs for running port injectors, water-meth, or nitrous. Is it possible to turn off DI and run it on purely port? Definitely not for idle and lower loads, but it possible as soon as you hit boost to shutoff DI to and run it purely on port. All in all, i have to accept the fact that avoiding LSPI the easy way is to run lower calcium levels. Thought perhaps running higher octane, cleaner fuels and adding in port injection could lessen the risk. Maybe run higher zinc and moly?

first time i hear that about injectors in an engine.but my knowledge is limited with injectors.
but its uselless bcs. DI is problematic in indle and lower loads,when you accelerate and high rpm then works fine.

Yea...........i'm gonna run motul x-clean gen 2 and call it a day. Thanks for the info guys!

good choice ,is always one of my next options if price is good.

 

[lrk185]

but its uselless bcs. DI is problematic in indle and lower loads,when you accelerate and high rpm then works fine.

Well actually let me rephrase what i said before. Is it possible to run only port injection at idle and low loads? Yes. Practical to make it possible? no lol

 

[edyvw]

Yea...........i'm gonna run motul x-clean gen 2 and call it a day. Thanks for the info guys!

Considering you will run alcohol, at minimum X-Clean 5W40. The heavier, the better.

 

[lrk185]

Considering you will run alcohol, at minimum X-Clean 5W40. The heavier, the better.

eddy i think you have a stalker on the mkv forums

https://www.supramkv.com/threads/5w40-motor-oil.19040/post-306449

 

[edyvw]

eddy i think you have a stalker on the mkv forums

https://www.supramkv.com/threads/5w40-motor-oil.19040/post-306449

Lol. Celebrity!

 

[B767capt]

I had my 2024 BMW LCI B58TU2 factory 0W12 oil checked at Blackstone. I plan on doing oil changes every 5k but wanted to see how the TBN was holding up on this new oil so I did an early change. High metal wear due to break-in is expected.

 

[Marcozi]

I had my 2024 BMW LCI B58TU2 factory 0W12 oil checked at Blackstone. I plan on doing oil changes every 5k but wanted to see how the TBN was holding up on this new oil so I did an early change. High metal wear due to break-in is expected.

Dump the 0W20 and buy the 5w30 oil at the dealer. Or, buy a high quality fully synthetic oil such as Ravenol VMP 5W30. The oil is great!!!

 

[mattsheng]

BMW dropped LL01 and LL04 approvals for all B58TU2 engines. Not sure why you would recommend "the 5w30 oil at the dealer," which is LL01, or Ravenol VMP, which is LL04.

LL01FE is still suitable for B58TU2 without GPF though.

 

[edyvw]

BMW dropped LL01 and LL04 approvals for all B58TU2 engines. Not sure why you would recommend "the 5w30 oil at the dealer," which is LL01, or Ravenol VMP, which is LL04.

LL01FE is still suitable for B58TU2 without GPF though.

Because they are better oils. Simple as that.

 

[mattsheng]

Because they are better oils. Simple as that.

I'm sure they are great oils but BMW surely dropped LL01 and LL04 approvals from B58TU2 worldwide for a reason other than CAFE, right? I guess at least a disclaimer that LL01 and LL04 are technically not suitable for B58TU2 per BMW should be said.

 

[B767capt]

Dump the 0W20 and buy the 5w30 oil at the dealer. Or, buy a high quality fully synthetic oil such as Ravenol VMP 5W30. The oil is great!!!

Unfortunately that isn't 0W20 but 0W12. I'm only passing on what I read but over on Reddit in the BMWtech section, a tech had just gotten back from the B58 school and said the 0W12 was critical for the switchable rocker arms in the Miller cycle designed in these TU2 motors. I wish I knew more but it's hard to find info. BMW has already replaced valve train parts in my motor with only 2k on the clock. It's a product enhancement program for motors made from May -July. They had a few fail right off so they came up with improved parts. I'm sticking to OEM oil until the warranty is over. I'll change it often.

BTW what is a good way to post Blackstone reports that are pdf but BIOG won't allow pdf files?

 

[mattsheng]

Unfortunately that isn't 0W20 but 0W12. I'm only passing on what I read but over on Reddit in the BMWtech section, a tech had just gotten back from the B58 school and said the 0W12 was critical for the switchable rocker arms in the Miller cycle designed in these TU2 motors. I wish I knew more but it's hard to find info. BMW has already replaced valve train parts in my motor with only 2k on the clock. It's a product enhancement program for motors made from May -July. They had a few fail right off so they came up with improved parts. I'm sticking to OEM oil until the warranty is over. I'll change it often.

Here is a detailed functional description of the new B58TU2 engines: B58TU2 functional description

 

[B767capt]

ere is a detailed functional description of the new B58TU2 engines: B58TU2 functional description

Just what I was looking for . Thanks for that, I appreciate it. When I took the X5 in for the valve train work, I asked my SA about the LL01FE and took the BMW document, which I think you posted, in showing it was OK without GPF. He went to his boss with the document and they met for about 10 minutes and told me not to change from the 0W12 until the warranty is over. He said do not give BMW a reason to deny warranty. So I'll just change it every 5K if the TBN is holding up especially since there have been issues already.

 

[mattsheng]

Just what I was looking for . Thanks for that, I appreciate it. When I took the X5 in for the valve train work, I asked my SA about the LL01FE and took the BMW document, which I think you posted, in showing it was OK without GPF. He went to his boss with the document and they met for about 10 minutes and told me not to change from the 0W12 until the warranty is over. He said do not give BMW a reason to deny warranty. So I'll just change it every 5K if the TBN is holding up especially since there have been issues already.

Anytime! PM me if you need more BMW tech info.

 

[edyvw]

I'm sure they are great oils but BMW surely dropped LL01 and LL04 approvals from B58TU2 worldwide for a reason other than CAFE, right? I guess at least a disclaimer that LL01 and LL04 are technically not suitable for B58TU2 per BMW should be said.

They did not drop it worldwide. BMW sells vehicles in the markets that have poor gasoline quality etc.
Also, the choice of oils is logistical, and in other markets, projected fuel gains are important.
If I got 0W12 in the sump, the first destination would be my garage and Rhino's.

 

[kschachn]

Just what I was looking for . Thanks for that, I appreciate it. When I took the X5 in for the valve train work, I asked my SA about the LL01FE and took the BMW document, which I think you posted, in showing it was OK without GPF. He went to his boss with the document and they met for about 10 minutes and told me not to change from the 0W12 until the warranty is over. He said do not give BMW a reason to deny warranty. So I'll just change it every 5K if the TBN is holding up especially since there have been issues already.

Where does it say "the 0W12 was critical for the switchable rocker arms in the Miller cycle designed in these TU2 motors"?

 

[mattsheng]

They did not drop it worldwide. BMW sells vehicles in the markets that have poor gasoline quality etc.
Also, the choice of oils is logistical, and in other markets, projected fuel gains are important.
If I got 0W12 in the sump, the first destination would be my garage and Rhino's.

I'm not saying BMW dropped LL01 and LL04 worldwide. I'm saying they dropped LL01 and LL04 specifically for all B58TU2 variants worldwide. You can check it here: Technically suitable engine oils for BMW Group engines V35

 

[kschachn]

I'm sure they are great oils but BMW surely dropped LL01 and LL04 approvals from B58TU2 worldwide for a reason other than CAFE, right? I guess at least a disclaimer that LL01 and LL04 are technically not suitable for B58TU2 per BMW should be said.

There is never a technical reason to move to lower HT/HS oils other than fuel economy.

And restrictions on promoting varying oil grades isn't only a US limitation. There are European and UK carbon emission restrictions similar to CAFE. Politics dictate here.