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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 10-14-2008, 05:51 PM
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bl335i08 bl335i08 is offline
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Engine Warm-up time

This is my first bimmer and I'm not too familiar with it. My previous Hondas and Toyotas usually took a mile or so to reach normal engine operating temp. or the needle said so anyway. The 335i on the other hand takes at least 3 miles or something for the needle budge any at all. Is this true with your bimmers too? Caveat: I have not changed my route to work.
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  #2  
Old 10-14-2008, 06:29 PM
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Your previous Hondas and Toyotas, and most non-performance cars, have a coolant temperature gauge. This warms up significantly faster than the motor oil temperature, which is what is displayed in your 335i.
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  #3  
Old 10-14-2008, 07:51 PM
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the motor oil temperature, which is what is displayed in your 335i.[/QUOTE]

Thank you for clarifying that for me. Didn't even consider that. So, does yours take that long to get to 200?
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  #4  
Old 10-15-2008, 01:03 PM
franka franka is offline
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Quote:
Originally Posted by AzNMpower32 View Post
This warms up significantly faster than the motor oil temperature, which is what is displayed in your 335i.
Oil temp really? Are you sure? Its strange that a mfgr would show oil temperature and at the same time not show water temp. Unless it is related to the turbos
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  #5  
Old 10-15-2008, 01:10 PM
ProRail ProRail is offline
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Originally Posted by franka View Post
Oil temp really? Are you sure? Its strange that a mfgr would show oil temperature and at the same time not show water temp. Unless it is related to the turbos
"Unconventional" is a much more friendly word than "strange." These are BMWs we are talking about here.
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  #6  
Old 10-15-2008, 01:12 PM
franka franka is offline
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OK unconventional.
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  #7  
Old 10-14-2008, 06:56 PM
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TheCritic TheCritic is offline
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The manual for my X3 says specifically not to idle to let the motor warm up. What's the reasoning?
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  #8  
Old 10-14-2008, 07:19 PM
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Idling is not the most efficient way to warm up the engine. Nor is it environment-friendly. The best way is to get going applying light load, i.e. no flooring until the engine reaches its nominal temperature.
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  #9  
Old 12-04-2008, 01:49 PM
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idling is not the most efficient way to warm up the engine. Nor is it environment-friendly. The best way is to get going applying light load, i.e. No flooring until the engine reaches its nominal temperature.
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  #10  
Old 10-15-2008, 12:57 PM
franka franka is offline
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Quote:
Originally Posted by TheCritic View Post
The manual for my X3 says specifically not to idle to let the motor warm up. What's the reasoning?
I would like to see the exact wording in the manual.
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  #11  
Old 10-15-2008, 01:20 PM
philippek philippek is offline
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Quote:
Originally Posted by franka View Post
I would like to see the exact wording in the manual.
I can't attach the entire manual as the pdf is too big, but you can see it here:

http://www.bmwusa.com/Standard/Content/Owner/dgh.aspx

On page 37 it states:

Quote:
Originally Posted by 2007 BMW X3 Owner's Manual
Do not allow the engine to warm up while parked; instead, start driving immediately at a moderate engine speed
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  #12  
Old 10-15-2008, 01:23 PM
franka franka is offline
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That is pretty clear. Thanks
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  #13  
Old 12-03-2008, 11:31 AM
nhhiep nhhiep is offline
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Quote:
Originally Posted by franka View Post
i would like to see the exact wording in the manual.
read the manual of your car. It's in there.
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  #14  
Old 12-03-2008, 03:55 PM
franka franka is offline
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Quote:
Originally Posted by nhhiep View Post
read the manual of your car. It's in there.
Aren't you the little wise a*s.

The post was not addressed to you, and the thread is not yours. So when did you become authorized to speak for the poster?

More to the point my little friend, my question was about the poster's X3, and not an E39, and since I do not carry a Bentley for all models I had to ask. Or maybe you can tell me what the X3's manual says?
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Last edited by franka; 12-03-2008 at 04:15 PM.
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  #15  
Old 10-14-2008, 07:39 PM
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The above posts are true, but since the OP states it takes 3mi for the oil temp to budge, we can assume that he/she is driving said vehicle.

I suggest giving the motor 10-15secs on a cold start to settle down, but I would not exceed 40s of just "sitting" because it puts a load on the catalytic converter and is otherwise harmful.
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  #16  
Old 10-14-2008, 07:44 PM
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Quote:
Originally Posted by AzNMpower32 View Post
The above posts are true, but since the OP states it takes 3mi for the oil temp to budge, we can assume that he/she is driving said vehicle.

I suggest giving the motor 10-15secs on a cold start to settle down, but I would not exceed 40s of just "sitting" because it puts a load on the catalytic converter and is otherwise harmful.
Would that be for all vehicles?

I let my e46 get to just above the blue in the temp gauge, which is usually within a minute of starting.
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  #17  
Old 10-15-2008, 06:35 PM
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Quote:
Originally Posted by LuvThatSam View Post
Would that be for all vehicles?

I let my e46 get to just above the blue in the temp gauge, which is usually within a minute of starting.
Since the E46 and X3 are essentially the same (we also have a buffered coolant temp gauge), I suggest you do the same. I actually do this with all cars. I think its a reasonable time for the engine to settle, without letting it idle needlessly.
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  #18  
Old 10-18-2008, 10:00 PM
MARAUD MARAUD is offline
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+1 Desertdriver

The entire argument of conventional vs synthetic oils really cracks me up. As desertdriver pointed out, they are both hydrocarbon based lubricants.... But what you're missing is this: without DynoOil there is no "AmsOil".... Synthetic oil is simply a "more perfect" derivative of what would be created by standard refinement. Synthetic oil is the AHHHHNALD of conventional oil.
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  #19  
Old 10-20-2008, 09:52 AM
desertdriver desertdriver is offline
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Originally Posted by MARAUD View Post
The entire argument of conventional vs synthetic oils really cracks me up. As desertdriver pointed out, they are both hydrocarbon based lubricants.... But what you're missing is this: without DynoOil there is no "AmsOil".... Synthetic oil is simply a "more perfect" derivative of what would be created by standard refinement. Synthetic oil is the AHHHHNALD of conventional oil.

Some people dont know that crude oil contains MANY components, like thousands different molecules. Motor oil(dino) just is basically a boiling fraction of the crude. Aliphatics, olefins, aromatics, yes even esters exist in crudes. Synthetics are better controlled in the chain length and functional group variations, so they behave more consistently with a range of temps, but this doesn not mean they dont have a temperature dependence or viscosity index.
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  #20  
Old 10-15-2008, 09:39 AM
desertdriver desertdriver is offline
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The warm up time will depend on ambient temperature. When it is cold out it will take longer. It will also depend on how long it has been since youve driven your car. I believe that BMW states that you should not apply full throttle until at least 170F(?) or so. Coolant temp is not a good indicator of engine warmup, so I doubt your hondas were really warmed up. the 335i has a oil temp gage and this is the safe way to interpret warmup. I am a little more conservative and will not redline my car until 200F is reached.
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  #21  
Old 10-15-2008, 09:49 AM
anE934fun anE934fun is offline
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Here is my protocol: Start the car and let the engine run with the car parked until the engine idle drops down to the 800 rpm territory. Then drive slowly for about 1 - 2 miles. After the 1 - 2 mile point, normal driving. The initial high revs are programmed in to get the catalyst up to operating temperature as quickly as practical; so I let the catalyst get happy and then driving slowly for the 1 - 2 miles gets the rest of the engine 'warmed up'.
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  #22  
Old 12-02-2008, 04:57 PM
Shocktopus Shocktopus is offline
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Quote:
Originally Posted by anE934fun View Post
Here is my protocol: Start the car and let the engine run with the car parked until the engine idle drops down to the 800 rpm territory. Then drive slowly for about 1 - 2 miles. After the 1 - 2 mile point, normal driving. The initial high revs are programmed in to get the catalyst up to operating temperature as quickly as practical; so I let the catalyst get happy and then driving slowly for the 1 - 2 miles gets the rest of the engine 'warmed up'.
That's my routine. I have the advantage that my house is 1.5 miles from the freeway, so by the time I need to gun it, I can.
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  #23  
Old 12-02-2008, 05:56 PM
karlmalden karlmalden is offline
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This may be an incredibly stupid question, but I cannot even manage to find the engine temperature gauge. I have a 2006 330xi...any ideas? Thanks!
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  #24  
Old 12-02-2008, 09:22 PM
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Originally Posted by karlmalden View Post
This may be an incredibly stupid question, but I cannot even manage to find the engine temperature gauge. I have a 2006 330xi...any ideas? Thanks!
There isn't one. If the engine temperature gets too high, you'll be alerted by a message in the IP (and iDrive if equipped).

The cooling system is electronic and is capable of shutting the pump off when the engine is cold to allow it to warm faster, plus it can also send you a warning that the pump has failed even before an engine overheat occurs. It can also run the pump with the engine off.
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  #25  
Old 10-15-2008, 11:47 AM
imoksoami imoksoami is offline
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Quote:
Originally Posted by desertdriver View Post
the warm up time will depend on ambient temperature. When it is cold out it will take longer. It will also depend on how long it has been since youve driven your car. I believe that bmw states that you should not apply full throttle until at least 170f(?) or so. Coolant temp is not a good indicator of engine warmup, so i doubt your hondas were really warmed up. The 335i has a oil temp gage and this is the safe way to interpret warmup. I am a little more conservative and will not redline my car until 200f is reached.

+1
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