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BMW Diesel Owners / Enthusiasts
Do you own a diesel powered BMW? Maybe a 335d or a BMW x35d? Come and talk about what makes your car great!

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  #1  
Old 03-07-2012, 06:53 AM
Alpine300ZHP Alpine300ZHP is offline
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Location: South Florida
 
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Mein Auto: 435/x3 35
335d Oil Change Interval

Guys and Gals. I am at a crossroads regarding this topic. I did an early change on my diesel at 6k miles and am conflicted as to if or not I should do it every 6k miles or let it run the 11k miles the OBC calls for? Has anyone on here done an oil analysis with the oil at 9-11k miles? If so how did it look? On the surface it appears that 11k miles is actually a doable change interval for this car, but I like to be sure. Any input you guys can give is much appreciated.
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  #2  
Old 03-07-2012, 07:13 AM
d geek d geek is online now
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Location: San Antonio, TX, USA
 
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http://www.bimmerfest.com/forums/sho...d.php?t=537349

11K mi UOA at post #20
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  #3  
Old 03-07-2012, 08:02 AM
Alpine300ZHP Alpine300ZHP is offline
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Quote:
Originally Posted by d geek View Post
Thanks that helps. Question...does the elevated iron pose a concern? The way I read it seems to indicate that the 11k mile change is fine. You agree?
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  #4  
Old 03-07-2012, 08:20 AM
d geek d geek is online now
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I would not hesitate to run 11K mi OCI on that engine. As I stated in that thread, anything <100 ppm is normal (from what I've read on oil analysis).
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  #5  
Old 03-07-2012, 08:26 AM
HIREN HIREN is offline
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My Oil analysis showed about 10-11k life. I still change it about every 6k, in between the recommended change intervals.
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  #6  
Old 03-07-2012, 09:56 AM
Alpine300ZHP Alpine300ZHP is offline
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Mein Auto: 435/x3 35
Quote:
Originally Posted by d geek View Post
I would not hesitate to run 11K mi OCI on that engine. As I stated in that thread, anything <100 ppm is normal (from what I've read on oil analysis).
Thanks. It looks like 77 ppm on 11k oil is well under 100 ppm. Seems like BMW went to a reasonable oil change level for this engine. Makes me wonder why they do not do that for all of them. Even MB recommends oil changes at 10k and that seems to be reasonable.
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  #7  
Old 03-09-2012, 04:24 PM
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EYE4SPEED EYE4SPEED is offline
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So would every 6-7500 be overkill?
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  #8  
Old 03-09-2012, 05:55 PM
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rmorin49 rmorin49 is offline
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If you are leasing and not planning to buy at the end of the lease just let BMW change the oil when it's due, nothing more. If you are buying and plan to keep the car beyond 100K miles, I would do just as you did, an initial change early just to get rid of any particles that might have been generated during the early break in. If you do mostly highway driving as I do, I am going to follow BMW's computer and just have the dealer do the covered changes. However, if plan to keep the car and are doing a fair amount of low speed around town driving I would not consider more frequent changes but since I do mostly highway driving my car goes about 13K miles between covered changes. I don't know if the interval is shorter if most of the driving is lower speed around town with more starts and stops of the engine. With modern synthetic oil, 13K miles is not a lot of miles between changes but I would go longer than 12 months.
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  #9  
Old 03-12-2012, 08:34 PM
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dll2k4 dll2k4 is offline
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Quote:
Originally Posted by rmorin49 View Post
If you are leasing and not planning to buy at the end of the lease just let BMW change the oil when it's due, nothing more.
+1
I will hit 10K this week and the CBS is estimating my first service at 13K.
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  #10  
Old 03-12-2012, 11:52 PM
magungo magungo is offline
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Any place you guys recommend to get cheaper motor oil? I checked with the dealer and their Castrol costs 10 a quart. Pep boys sells the diesel mobile 1 for 8.99 a quart so its not that much better.
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  #11  
Old 03-13-2012, 04:44 AM
KeithS KeithS is online now
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Mein Auto: '11 335d, '00 540iT
Quote:
Originally Posted by magungo View Post
Any place you guys recommend to get cheaper motor oil? I checked with the dealer and their Castrol costs 10 a quart. Pep boys sells the diesel mobile 1 for 8.99 a quart so its not that much better.
You need to find a different dealer. With my 20% BMWCCA discount I paid $5.68 plus tax for a quart a few months ago from a dealer in NJ. (wanted to have an extra quart just in case. Turns out car does not burn a drop).
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  #12  
Old 03-13-2012, 06:39 AM
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floydarogers floydarogers is offline
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Location: Renton, WA
 
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Quote:
Originally Posted by magungo View Post
Any place you guys recommend to get cheaper motor oil? I checked with the dealer and their Castrol costs 10 a quart. Pep boys sells the diesel mobile 1 for 8.99 a quart so its not that much better.
I've not seen prices for oil meeting BMW LL-04 for less than $7, usually around the $8-$9 range. Be sure it says LL-04; there are many "diesel" oils but most do not meet it. Total Quartz INEO is a good option and around $7, but you have to pay shipping if there's not a local dealer.
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  #13  
Old 03-13-2012, 08:10 AM
d geek d geek is online now
diesel evangelist
Location: San Antonio, TX, USA
 
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Quote:
Originally Posted by magungo View Post
Any place you guys recommend to get cheaper motor oil? I checked with the dealer and their Castrol costs 10 a quart. Pep boys sells the diesel mobile 1 for 8.99 a quart so its not that much better.
NAPA sells Valvoline with LL04 rating. I'm not sure what it costs in your area but spending even $9/qt for good oil once a year should not be an issue.
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  #14  
Old 03-13-2012, 09:50 AM
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EYE4SPEED EYE4SPEED is offline
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Another reason not to buy a lease turn in... 15k mi interval oil changes.
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  #15  
Old 03-13-2012, 10:01 AM
Alpine300ZHP Alpine300ZHP is offline
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Mein Auto: 435/x3 35
Mine is driven mostly city and CBS is indicating change around 11k miles. I own mine and am going to stick with the CBS based on the ancedotal reports that 11k changes are within the life of the BMW oil.
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