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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Maintenance on CPO'd 08 335i 31k



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      08-22-2012, 12:23 PM   #1
straightcashhomie
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Maintenance on CPO'd 08 335i 31k

Hi guys,

I am new here, was searching around for some maintenance standards for out vehicles and wanted to follow one main guideline. I was wondering if some of you could please take your time out to throw some input on maintaining your e92 335...

Oil changes every 7,500-12,000 miles (I have NOT changed the oil for this vehicle yet. There are so many different opinions on what oil to use, my main question is what weight and brand should I use. I read that we should use Castrol 5w-30 LL01 of course, but others are saying 0w-40, etc. What weights are you guys running, for the different seasons of the year? Im in the Northeast, NY/NJ/PA area so it gets really cold in the winter, and really hot in the summer, thoughts on oil, brand, weight, filter, where to purchase?

Air filter cleaning every 20k (I plan on going BMW DCI sooner or later, so this should be covered)

Spark plugs every 25k (Im at 31k with I believe original Spark plugs, can you guys direct me to what brand/website to purchase from?)

Valve cleaning every 35-45k (depends on how much oil pass through you have, an OCC would help prolong this) (I will tackle this at ~40kish

Ignition Coils every 30-35k (Again, I am at 31k, so any recomendations on where to go with this one?

Check suspension (shocks/springs) (**just cause it's a 4-5 yr old car) (inspection coming up, should be fine since its CPO'd approved)

Check vacuum lines (**age) (Not there yet)


Check brake rotors & pads (**age) (Just replaced sensors and pads via BMW)

Trans fluid change between 45-55k or never at all (not quite there yet, is this an easy DIY?)

Change fluids (coolant, brakes, etc) & associated hoses around 50-60k (I may be going to BMW for these type of things) (no lift, and a slanted backyard makes it difficult)

Thanks in advance!!!!
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      08-22-2012, 12:52 PM   #2
egregor
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E90 here, but here's my 2c on maintenance:

* 5W-30 is fine. If you're sticking to <10K intervals, you shouldn't worry too much about deviating from BMW's recommendation as it won't have any adverse affects in your climate.
* 20K is good for air filter cleaning
* 25K is overzealous for plugs. Are you running a tune? If not, 45K should be just fine (as recommended by the computer). If you are, then maybe 25K might be better.
* 40K for valves is a good idea. Mine were really jacked by 70K.
* My preference for coils is "when they fail".. some would prefer not to get that initial misfire. But in either case, I think 30 is very early. I'd say more like 75K preventive.
* With your mileage suspension should be fine for a while.
* Vacuum lines just check for hardness/cracks, if not leave em, at the very least they should last 100K+
* Brakes, check when they squeal, or indicated by the computer, or by 50K, whichever is first
* Trans fluid, do pan drop & refill around 65K, replace pan/filter (it's one unit). Check mechatronic sealing sleeve for leakage (common). This is for auto.
* Brake fluid every 2 years, always. Coolant every 4-5. Don't forget your differential too!

Congrats!
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      08-22-2012, 01:14 PM   #3
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Quote:
Originally Posted by egregor View Post
E90 here, but here's my 2c on maintenance:

* 5W-30 is fine. If you're sticking to <10K intervals, you shouldn't worry too much about deviating from BMW's recommendation as it won't have any adverse affects in your climate.
* 20K is good for air filter cleaning
* 25K is overzealous for plugs. Are you running a tune? If not, 45K should be just fine (as recommended by the computer). If you are, then maybe 25K might be better.
* 40K for valves is a good idea. Mine were really jacked by 70K.
* My preference for coils is "when they fail".. some would prefer not to get that initial misfire. But in either case, I think 30 is very early. I'd say more like 75K preventive.
* With your mileage suspension should be fine for a while.
* Vacuum lines just check for hardness/cracks, if not leave em, at the very least they should last 100K+
* Brakes, check when they squeal, or indicated by the computer, or by 50K, whichever is first
* Trans fluid, do pan drop & refill around 65K, replace pan/filter (it's one unit). Check mechatronic sealing sleeve for leakage (common). This is for auto.
* Brake fluid every 2 years, always. Coolant every 4-5. Don't forget your differential too!

Congrats!
thank you, input on websites/brands of oil or sparkplugs to get?
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      08-22-2012, 01:38 PM   #4
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OEM guy myself.
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      08-22-2012, 01:59 PM   #5
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oh okay, any more input from anyone else
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      08-22-2012, 02:37 PM   #6
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Castrol 5w30 is not LL01 approved. It's Castrol 0w30 or Mobil1 0w40.
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      08-22-2012, 06:18 PM   #7
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Quote:
Originally Posted by VTECaddict
Castrol 5w30 is not LL01 approved. It's Castrol 0w30 or Mobil1 0w40.
This is where I get confused, which weight do
You recommend ? What brand also ? Fellow VTecer I used to have an K20 type s running low 13s na
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      08-23-2012, 06:00 AM   #8
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bump for any other responses
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      08-23-2012, 06:31 PM   #9
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Google "BMW Old School Maintenance Schedule". It'll answer a lot of your questions.
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