[E92Fan]

Originally Posted by Heartware

I was wondering how you noticed the problem besides the blue smoke?
Did the car get into limp mode or did it trigger any engine code?
If it did trigger engine codes, do you remember which codes?

It was the sightly lumpy idle, lack of engine response and increased oil consumption that started the investigation process. Then I noticed the blue smoke, and that's when it all started snowballing.

No engine codes at all - this was good old fashioned mechanics of an engine!

[VanM3Lover]

After reading all the previous posts, I am a bit concerned about the standard oil (10W-60), which is recommended for my M. First, my engine runs cooler then the N54, nearly always around 210F, and sometimes below 200F for short periods. Second, this thicker oil does not protect the engine as well as the Mobile 1 0W-40 when starting up and during warming up, which takes a long time. So I am wondering the reason BMW recommends 10W-60 for all M cars and should I change oil?

[123Britt]

Guessing it is a LL-04 oil with a 0W-40 vis?????? Brand????

[rbaldwin28]

Originally Posted by VanM3Lover

After reading all the previous posts, I am a bit concerned about the standard oil (10W-60), which is recommended for my M. First, my engine runs cooler then the N54, nearly always around 210F, and sometimes below 200F for short periods. Second, this thicker oil does not protect the engine as well as the Mobile 1 0W-40 when starting up and during warming up, which takes a long time. So I am wondering the reason BMW recommends 10W-60 for all M cars and should I change oil?

I would stick with what they recommend. You will not have sufficient oil pressure with 0w40. It is the same reason people should not run 10w60 in there N54 except there pressure would be to high to flow properly. BMW chooses each particular oil because of how close the tolerances of the motor are. Larger tolerances heavier oil, closer tolerances lighter oil. Put a light oil in a M = low oil pressure, Put a heavy oil in N54 = high oil pressure. Flow= Lubrication. Be carefull making any big changes in oil weight.

[edo]

Originally Posted by edo

A friend of mine who works at BMW dealership's service will ask the department which designed N54 engine, if it is OK to use 10W-60 oil.
After the answer is received I'll make up my mind wether to change the oil or not.

Finally received an answer. 10W-60 oil is perfectly fine for N54 engine, especially for hard driving. The only reason this oil is not on the recommended oils' list is it's longevity (it's recommended to change it every ~8k km) and it is not the best choice to drive during winter when it's cold.

Since I drive really hard and don't drive my 335i during winter (I have another car which is more suitable for snow), I will use 10W-60.

[kiteboy]

Mee i used every 10000 km Castrol 10w60, i think it's best that 0W40...

N54 is a motor which dissipate a lot of heat...

0w40 is too fluid...and don't forget that New ///M is comming with turbo technolgy...

serie 1 ///M, and new M5, and M3 f30

so i think 10W60 is the best choice to a N54 remap

[hipnotic]

get the mobil 1 0w-40

[IFX]

10-60 is for the M engines..

why should this even be considered for the n54?

Bottom line, stick to what is BMW recommended. Unless you have no warranty, or don't care about it.

I'd love to see these people running 10-60 take their car to BMW for an engine problem, and get laughed at.

[kiteboy]

you do what you want,lol , but i you are not stock, 10w60 protect better motor N54 that 0w40, because like i mean N54 is a motor which dissipate a lot of heat...

i never listened people running 10-60 take their car to BMW for an engine problem, and get laughed at ?????

[kiteboy]

HERE --> Castrol TWS 10w-60 Motorsport Engine Oil
BMW E90 335i N54 3.0L

http://www.ecstuning.com/BMW-E90-335i-N54_3.0L/ES10317/

[Clap135]

so being that the n54 is in a M car, and 10-60 is for M engine, what does this mean? lol

[kiteboy]

N54 will be the futur M car with F30....

N54 is not a traditionnal BMW ...you would know it ....

can you tell mee what is motor in serie 1 ///M

[edo]

Originally Posted by TrackRat

Oil viscosity is based on engine clearances. Heavier oils are only appropriate for engines that are designed for them. A dealer has absolutely no engineering expertise on rather it's appropriate to use 10W-60 in an N54 engine nor does anyone but the engine development engineers at BMW. BMW says 0W-40 is the viscosity range for the N54 and that's what you should stick with.

Just read my posts. The dealer asked BMW engineering department if it was OK to use 10W-60. The answer was YES. Period.

[kiteboy]

yes it's good and when you see that N54 dissipate heat, it will be a recommandation by BMW to use 10w60, also if motor is remap !!!

[kiteboy]

lower oil like w30 , i think not appropiate for the N54 --> too weak indication !!!

risk of shearing of the oil film with heat....

with 10w60 --> Castrol EDGE 10W-60 is a fully synthetic engine oil offering exceptional protection for high performance engines.

High degree of engine protection at elevated high and low temperatures.
Fully synthetic technology.

http://www.opieoils.co.uk/pdfs/castr...E%2010W-60.pdf

[edo]

Originally Posted by TrackRat

"BMW engineering dept.", yeah right. (sic)

Obviously you've never been inside an auto company. There are hundreds of engineering depts. and none of them respond to dealer inquires. Your dealer may have asked some paper pusher at BMW NA who has no clue what oil to use. But hey that won't stop clueless people from second guessing the engineers at BMW in Germany who actually test oils to determine what is the proper oil to use and then tell you what oil is required per the OM. Why bother actually reading and following the OM?

You are so laughable... Hate to say it, but it is true. It was the department that designed the engine. Feel better?
I wrote the reason why 10W-60 isn't in the recommended oil for 335i list. But it is perfect for me. You can use whatever oil you want. I don't give a F. But don't talk about things you have no clue. And stop writing (guessing) what my dealer did. It makes you look very silly.

[kiteboy]

edo so you ? you use 10w60 ??

[kiteboy]

damage motor with castrol 10w60

not possible

[dannemare]

Originally Posted by kiteboy

damage motor with castrol 10w60

not possible

I'm sure this guy wouldn't agree with you.
http://www.e90post.com/forums/showpo...5&postcount=76 :

Originally Posted by E92Fan

I've been going on about the downsides of using a 10W-60 oil in the N54 for about a year now, but everytime I suggest it I get shot down in flames

One year ago I ran TWS for three months... I ended up replacing the top breathing system (which is the head casing in its entirety as the breathers are moulded into the casing), damaged the turbo seals, suffered blowback on the overrun, blue smoke out of the exhausts, and an ill engine as a result.

Pulled the engine apart, replaced the broken bits, kickstarted my turbo development plan as I had to get the turbos refurbed due to the leaking seals, carried out cylinder leakage tests, determined that I had a minor oil control ring problem, decided it was time to rebuild the engine properly.

Consulted with Schirmer Racing and BMW Motorsport out in Germany - discovered the oil was largely to blame because there wasn't enough lubrication due to the higher viscosity. Flushed the rebuilt engine with new oil (Silkolene ProS 5W-40), got new turbos, and hey presto the engine was better than new.

I'll never use TWS 10W-60 in this engine again.

Incidentally, the engine has since been apart again for piston replacements and it was noted there had been no further degradation of the oil control rings.

In essence, if people see temps that could perhaps justify an ultra-thick 60 oil, you have a serious cooling problem. Fix the source of the problem (for example, add a beefier oil cooler or something) and stick to the recommended viscosity. Also, simply change the oil more often for added peace of mind.

--
Frederik Dannemare

[kiteboy]

in your link, ok guy meet a problem, but it's is really not sure that is problem is due to usage 10w60!!! (it seems a pb turbo, and really an isolated case, not due to oil lubrification, an other damage that he thinks it's due to oil ....!)

i used since more than one year 10w60 in my N54 and particulary since 92 000 km (now i've got 106 000km) , and each 12 000km i replace oil...

i just want to say you, that with mobil 1 0w40 between 80000 km and 92 000km , so after 12 000 km oil is very very black like diesel.. not less with 10w60 after 12 000 km!!!

else about pb cooling that you mean, my N54 dissipate less heat with 10w60 instead of 0w40 (and i've got additional cooler oil),

now temps between 100°c & 110°c for oil , in conduit normal....

so i think usage of 10w60 is not nefast for motor, else if we live in a region like alaska for example where conditions cold.....ok use 0w40..or 0w30

so ?? what your conclusion about it ??


here you can see that ok 10W60 is for ///M series, and 10w60 seems LL01, they never told that it's not good for 335i (N54) and when they speak about 5W30 for example etc.. they mentionned never use this in M ....

http://www.bmwusa.com/Standard/Conte...ngineOils.aspx

[ian2002525]

i'm using motul 300v Racing oil 5w40
its great

[kiteboy]

yes but castrol 10w60 is not bad also