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E90 M3 (Sedan) | E92 M3 (Coupe) | E93 M3 (Convertible) (2008-2013) {Engine: S65 - Max Hp: 414 hp (420 hp Euro) at 8,300 rpm / 295 lb/ft at 3,900 rpm} |
View Poll Results: What is your 4.0L V8's oil consumption rate? | |||
My E9x M3 V8 engine burns 1-liter of oil every 5,000+ miles |
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111 | 53.62% |
My E9x M3 V8 engine burns 1-liter of oil every 4,000 miles |
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31 | 14.98% |
My E9x M3 V8 engine burns 1-liter of oil every 3,000 miles |
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33 | 15.94% |
My E9x M3 V8 engine burns 1-liter of oil every 2,000 miles |
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11 | 5.31% |
My E9x M3 V8 engine burns 1-liter of oil every 1,000 miles |
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21 | 10.14% |
Voters: 207. You may not vote on this poll |
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#41 |
Registered User
Join Date: May 2009
Posts: 313
Reputation: 0
![]() Location: El Paso, TX
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To keep the thread going, does anybody have a clue HOW the oil gets to the combustion chamber? It has to be thru the rings or valve guides, but why? I'd understand if we were running 5/20 oil, but with 10/60? Aren't our engines supposedly built to very close tolerances? Something doesn't add up.
I'm at 1,600 miles from the break-in service, and oil level still shows as full, which is good news since most of those miles have been highway, at high speeds (between 3,500 and 4K rpm), where this car supposedly burns more oil. I'm thinking these engines drink more oil when pushed hard, rather than just revved high for highway travel, no? At the ton, it's revving over 4K rpm, but hardly breaking a sweat. And the funny thing is the engine doesn't sound like it's revving high, or even strained at all. Love driving this car on trips; it's a blast. Hope everybody had a great Thanksgiving ![]()
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'08 E92 M3, Silverstone/Black Extended (w/carbon leather), 6MT Premium/Tech/Cold packages, Ext. Leather, 19s, Pwr Sunshade, Park Dist., iPod/USB, HD radio, Sat Radio, Enhanced Premium Sound, Moonroof. MODS: P/C black 19s, BMW perf. grilles, body-colored gills, black stock exhaust, reflector delete, euro light switch, alum pedals, ZHP lighted knob, tint. |
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#42 | |
///M POWERED
Join Date: Oct 2002
Age: 49
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The biggest difference between a "M" engine and non-M engine, are the tolerances between the cylinder bore and the the Aluminum pistons /w/ nitrided cro-moly steel piston rings. Since the S65B40 4.0 liter engine revs to 8400 rpms, the tolerances for piston ring-to-cylinder wall clearances have to more conservative than the tolerances for a normal 3-series engine. One of the problems associated with in designing a high performance engine with a 8400 redline, is the intense heat that is generated at full load. You have to engineer in a small relief tolerance, so the piston does not SEIZE inside the cylinder bore. All internal engine components are made of a wide variety of steel, titanium and magnesium alloys. These reciprocating engine parts are sliding inside smooth uncoated aluminum engine block cylinder bores. These different metal alloys all have different expansion and contraction rates when they heat up. The BMW engineers have to accurately calculate a safe operating tolerance between all these parts at every temperature point between 0 degrees Fahrenheit and ~260 degrees Fahrenheit. The biggest challenge for the engineers...is to find a happy medium where the engine will not seize under the most intense testing conditions, while also minimizing the blowby of oil past the piston rings. That happy medium is why we are told NOT to rev the engine before the engine reaches it's normal operating temperature. (~220 degrees Fahrenheit) If you rev the engine too high (before it has reached it's normal operation temperature), you will be forcing some oil residual past the outer piston rings into the combustion chamber. (where it is burned as a fuel source) That is where you 'lose' oil when the engine is cold. When the engine is operated at extremely high rpms for long periods of time, the break-in procedure will determine whether or not you lose a noticeable amount of oil over time. Some M engines will lose oil, while others will not. It all comes down to how well the piston rings were worn-in upon initial break-in. If the break-in was successful, the edges of the piston rings will seal properly with the cylinder walls to create a very tight seal. But if the edges of the piston rings did not wear-in properly...you will not have a good seal. (resulting in moderate to severe oil consumption)
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#43 |
One mod leads to another ...
Join Date: Sep 2002
Age: 44
Posts: 2,070
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Nice info. Thanks. So if I understand you correctly if you rev your engine before it is fully warm you will most likely just burn more oil but not necessarily harm it? I don't ever do this but I am curious.
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2009 E90 M3 - LeMans Blue - Speed Cloth - 6 speed ESS Tune - BMW Performance Exhaust - StopTech Trophy BBK - KW Clubsport Suspension - TE37SL Wheels |
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#44 | |
Registered User
Join Date: May 2009
Posts: 313
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![]() Location: El Paso, TX
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Having said that, what you said actually makes sense, even if I don't know why. Maybe the S65 has forged pistons that behave differently, or titanium connecting rods, etc. I don't believe our engines even have the former, but as long as oil consumption is not over the top, I don't have an issue with that. Heck, even my 2 new Hondas consume oil too, something that never happened to me before with any new car. My guess is sloppy quality and/or looser tolerances for cheaper costs, but could be wrong. Thanks a lot for your insight buddy ![]()
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'08 E92 M3, Silverstone/Black Extended (w/carbon leather), 6MT Premium/Tech/Cold packages, Ext. Leather, 19s, Pwr Sunshade, Park Dist., iPod/USB, HD radio, Sat Radio, Enhanced Premium Sound, Moonroof. MODS: P/C black 19s, BMW perf. grilles, body-colored gills, black stock exhaust, reflector delete, euro light switch, alum pedals, ZHP lighted knob, tint. |
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#45 |
swims upstream...
Join Date: Nov 2009
Posts: 33
Reputation: 0
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I just put in my first "extra" qt of oil today at 7.2k mi. (last change at 1200mi service).
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2008 M3 Coupe /// DCT Space Grey-Silver Novillo-Black Anthracite // Tech / Premium / 19s / sunroof / Sat-HD-EPS-iPod / painted reflectors / matte black kidney grills & gills / MS intake filter / MS Spacers / 30% Suntek carbon tint / Challenge SS brake lines / Motul 600 / Cool Carbon pads |
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#46 |
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Join Date: Apr 2005
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Yes, will be getting fluids changed as service interval approaches. I missed the midway point on this interval,but all future service intervals will have an "inbetween" fluid change.
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2009 Space Gray M3 Coupe
My Ultimate BMW ///M Blog |
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#47 |
NASA SpecE30 Racer
Join Date: Jan 2007
Age: 36
Posts: 10,095
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Still no option for none on this poll. I've had my 1,200 mile service and 1 year ownership oil change. I lost no oil over either of those periods. The car has about 9,000 miles on it.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ King Tut 2006 Honda S2000 TT3: rio.ridedomain.com 1987 BMW 325is SpecE30: spece30.ridedomain.com 2012 BMW M3 Individual: Sold lsb.ridedomain.com 2013 Subaru BRZ: Sold brz.ridedomain.com 2012 Porsche Cayman R: Sold cayman.ridedomain.com 2009 Chevrolet Corvette Z06: Sold z06.ridedomain.com 2009 BMW M3 Coupe: Sold e92.ridedomain.com 2004 BMW M3 Coupe: Sold m3.ridedomain.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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#48 |
Registered User
Join Date: May 2011
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Could anyone tell me total oil capacity for the 4.0 v8 2011?
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#49 | |
///M POWERED
Join Date: Oct 2002
Age: 49
Posts: 7,374
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R E M E M B E R O U R T R O O P S ![]() True leaders are not those who strive to be first, but those who are first to strive and give their all for the success of the team. They can be identified by the clarity of their vision, the strength of their actions, and the integrity of their intent. A true leader has the confidence to stand alone, and the courage to make tough decisions. A true leader has compassion, and is willing to listen to the needs of others. He does not set out to be a leader, but he becomes one by the confidence that he inspires in others. He commands the respect of his peers, and is humbled by the admiration of his followers. True leaders are first to see the need, envision the plan, and empower the team for action. By the strength of the leader's commitment, the power of the team is unleashed. |
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#50 |
40oz. to Freedom
Join Date: Sep 2008
Posts: 898
In the garage:
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Usually around 7-8k miles on an oil change I have to add a liter. I try to change my oil every 7-8k miles.
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