Extreme Power House
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Oil level in N55?

Thread Tools Search this Thread
      10-01-2017, 06:55 PM   #1
BendtnerOrBust's Avatar

Drives: 2011 E92 335i xDrive M-Sport
Join Date: Aug 2017
Location: Michigan

iTrader: (0)

I don't want to sound too noobish, but I have a 2011 335i and I'm curious about the oil level in it's N55. I've only had the car for a month, but the service history and iDrive suggest the oil is at an acceptable level.

Is this info in the manual? Again, apologizes for my lack of knowledge, any info is appreciated!
"There's no 'I' in denial." - Peter Serafinowicz
Appreciate 0
      10-02-2017, 04:39 AM   #2
Second Lieutenant

Drives: various BMWs
Join Date: Oct 2015
Location: Seattle, WA

iTrader: (0)

Yes, the excess oil lives in the oil pan underneath the engine. This is true of almost every engine. The computer measures the oil level in the pan.
E92 335is: 6MT | Alpine White / Coral Red
E91 328i: 6MT + RWD | Alpine White / Black
E30 325is: S52 swap | Fully track prepped
Appreciate 0
      10-04-2017, 06:20 AM   #3
Lieutenant General

Drives: E90 & Z4 Coupe
Join Date: May 2012
Location: MARLAND

iTrader: (0)

Hoping this isn't a troll post....

You don't have any understanding of automobile engines based on your comments. As stated above, the engine oil resides in the oil pan located at the bottom of the engine block and you will never be able to physically see the oil in the engine (i.e. it's not like seeing the top of the coffee liquid in a coffee cup). The law of gravity dictates that the oil drains to the lowest point in the engine block, which is the oil pan. This type of design is known as a "wet" sump oiling system (vs. "dry" sump). Almost every street car except a few few are wet sump designs. Traditionally a wet sump system uses a physical dipstick to measure the level (amount) of oil in the sump (i.e. oil pan). With the advent of the E90 gasoline powered cars, BMW replaced the physical dipstick with an electronic device to determine the amount (i.e. level) of oil in the engine.

Using the idrive (if your car is equipped as such) there is a graphic that indicates the level of oil in the engine. The engine holds 7 quarts of oil. The e-dipstick (i.e. the electronic dipstick) reports only the amount (level) of the 7th quart of oil, not the entire compliment of oil in the sump. So in other words, if the graphic shows half full, it means the engine is low by only one-half quart of oil; it does not mean the engine only has 3 and one-half quarts of oil in the sump. BMW instructs owners to only add engine oil at 1-quart increments once the car notifies the driver the engine is 1 quart low of oil. The owners manual explains this to you.

Now just for completeness... a "dry sump" system simply means the majority of the oil is stored in a reservoir outside of the engine block and the engine has a very small capacity oil pan. Your car does not have that type of system.
Appreciate 0


n55 335, oil, oil cap

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 11:29 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST