1996 BMW 740il M62B44 Mobil1 0w40 Waited for timer to run out ~3yrs

doing a search on "Longlife-01 or Longlife-04" I found this.


https://bobistheoilguy.com/forums/t...gives-better-protection-than-ll04-oil.329930/

So I have no clue what to believe.
That's due to the fact that the US lagged much of Europe in implementing low-sulfur gasoline. It no longer applies to this market. The only meaningful difference between Longlife-01 and Longlife-04 is the SAPS level. Both have the same minimum HT/HS.

If you had done further reading you would have found this as well.
 
Other than the TBN what on the UOA shows the oil is "done"?

Well I don't think they would say to test again in another 4k miles if it was considered unusable.

Anyway considering I only put about 250 miles a month on this car, I think I can go 6 months on this oil and do a test on the unused sample I have vs the 6 month on with ~1500 miles on it and that will give me a good idea how its wearing and if its high on the copper I'll do a change then.
 
US moved to ULSG in 2020 and BMW has been using a thinner grade of LL04 in the US since around 2018. In any case, just buy Mobil 1 FS 5w40 or the 0w40 or Mobil Super 5w40 Euro if you feel you must stay with M1.

M1 recommends FS 5w30 (LL01) or ESP 5w30 (LL04) for your vehicle.


OK so I'll use

Mobil 1™ ESP 5W-30​

when I do the change.

I'll worry about that at the end of the summer.
 
OK so I'll use

Mobil 1™ ESP 5W-30​

when I do the change.

I'll worry about that at the end of the summer.
Go to Wal mart and get Mobil1 0W40, 5W40, Castrol Edge 5W40, Castrol Edge 5W30 Euro, Valvoline European Vehicle 5W40, QS 5W40.
While your engine can use LL04, you should really use LL01, especially since you are not driving a lot.
 
Well with the current fill, the mileage, and potential condition of your bearings I would change it this weekend. Reuse the filter. IJS.

Bearings are that bad?

Is it to the point I should consider replacing them?

I have no clue what the ranges should be so thats why i'm here.
 
Go to Wal mart and get Mobil1 0W40, 5W40, Castrol Edge 5W40, Castrol Edge 5W30 Euro, Valvoline European Vehicle 5W40, QS 5W40.
While your engine can use LL04, you should really use LL01, especially since you are not driving a lot.

Mobil1 0W40 is what I've been using on it since 2008, I still don't really understand the differance between the ll01 and llo4.

So one of you guys is saying to use the ESP 5w30 which is llo4?

And your saying use Mobil1 0W40 which is ll01.

I'm getting more confused by the second here. :D
 
Yup, But is that due to the oil length between changes or just age and mileage?
Hard to say, but bearings are subject to corrosive wear. To a certain extent corrosive wear will occur even when the engine isn't running, but it will happen a lot faster when the bearings are hot. It's possible that the corrosion inhibitor in the oil was used up due to the combination of time and mileage on the oil.

If you still have the oil filter, cut it open and look for bearing material. If you don't, cut the new one open after putting some more time on the engine. If there's hardly any visible metal, the bearings are probably fine. Switch to annual OCIs and continue to do UOAs to see if the wear metals trend back to normal.
 
Mobil1 0W40 is what I've been using on it since 2008, I still don't really understand the differance between the ll01 and llo4.

So one of you guys is saying to use the ESP 5w30 which is llo4?

And your saying use Mobil1 0W40 which is ll01.

I'm getting more confused by the second here. :D
LL01 is what is called full-SAPS (Sulfated Ash and phosphorus) oil. It is generally a better oil for long-term use.
LL04 is low-SAPS oil, which is more suitable for modern engines with direct injection and emission after treatment devices like particulate filters.
You don't have direct injection etc. Same like my N52 in 328. Keep using M1 0W40.
 
Hard to say, but bearings are subject to corrosive wear. To a certain extent corrosive wear will occur even when the engine isn't running, but it will happen a lot faster when the bearings are hot. It's possible that the corrosion inhibitor in the oil was used up due to the combination of time and mileage on the oil.

If you still have the oil filter, cut it open and look for bearing material. If you don't, cut the new one open after putting some more time on the engine. If there's hardly any visible metal, the bearings are probably fine. Switch to annual OCIs and continue to do UOAs to see if the wear metals trend back to normal.

Thank you! This makes sense as last winter when we had -9 degrees weather I had a radiator failure and ran about 10 miles overheating (3am in the morning) so that may explain it. Unfortunately I tossed the old filter but I'll examine this one when i do the next change.
 
LL01 is what is called full-SAPS (Sulfated Ash and phosphorus) oil. It is generally a better oil for long-term use.
LL04 is low-SAPS oil, which is more suitable for modern engines with direct injection and emission after treatment devices like particulate filters.
You don't have direct injection etc. Same like my N52 in 328. Keep using M1 0W40.

Thanks for the explanation!

Not that is is relevant here but I remember the original m60's had an issue with the nikasil coating and high sulfer gas turning into sulfurac acid and thats why they had to recall all those engines and goto the alusil cylinder coating.
 
Thanks for the explanation!

Not that is is relevant here but I remember the original m60's had an issue with the nikasil coating and high sulfer gas turning into sulfurac acid and thats why they had to recall all those engines and goto the alusil cylinder coating.
We don't have any more high sulfur in the gas. It is not the same as SAPS. SAPS is a byproduct, a metallic byproduct. Since 01/2017 gas in US is Ultra Low SUlfur Gasoline (ULSG).
 
Bearings are that bad?

Is it to the point I should consider replacing them?

I have no clue what the ranges should be so thats why i'm here.
I don't know if they're bad to the point that they require replacement but you have an engine with 250k miles in it, with a UOA which suggests some bearing wear had occurred, and you're currently using an oil which is not suitable for the engine.

So ya. I would change the oil to something with a Euro approval (ex, LL01).
 
Thanks for the explanation!

Not that is is relevant here but I remember the original m60's had an issue with the nikasil coating and high sulfer gas turning into sulfurac acid and thats why they had to recall all those engines and goto the alusil cylinder coating.
My 530i was one of those vehicles. FWIW Alusil isn’t a coating it’s an alloy, the whole block is made from that material.
 
I got in touch with the lab and they still have my sample and are going to do the TBN!
 
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