Warm up rpm and strange noise when holding rev at 3000rpm

akak1997 · 08-12-2008, 04:32 PM

Hi All,
I'm wondering what RPM do you guys shift at when your 135 is cold? I notice that if I shift <= 3000rpm the engine takes forever. My commute is around 18miles, it takes around 15miles to warm up. So by the time the car is warm, I've to stop, no cool down.
I also notice that if I hold the rev at around 3000rpm in 1st or 2nd, the engine has this weird noise, maybe it's the turbo. it maybe there at higher gears, but I probably just didn't hear it. Is that normal?
I'm done breaking in, but still not gonna redline the car until it's all warmed up.

Thanks for any input.

svencz · 10-22-2008, 01:22 PM

I'd like to know this also. The manual describes the max RPM during brake in, and that you don't have to wait for the car to warm up before driving it, but it doesn't say what is the recommended max RPM before the oil reaches the correct temperature? On my RX-8 it was recommended to keep it below 4,000. Any idea?

bluemoon · 10-22-2008, 02:20 PM

No real scientific recommendation but I keep the RPM <3500 until the oil reaches at least 200º just out of habit.

08-12-2008, 04:32 PM	#1
akak1997 Major 62 Rep 1,159 Posts Drives: BMW 135 @ 135mph Join Date: Aug 2008 Location: Los Angeles iTrader: (2) Garage List 2008 135i [0.00]	Warm up rpm and strange noise when holding rev at 3000rpm Hi All, I'm wondering what RPM do you guys shift at when your 135 is cold? I notice that if I shift <= 3000rpm the engine takes forever. My commute is around 18miles, it takes around 15miles to warm up. So by the time the car is warm, I've to stop, no cool down. I also notice that if I hold the rev at around 3000rpm in 1st or 2nd, the engine has this weird noise, maybe it's the turbo. it maybe there at higher gears, but I probably just didn't hear it. Is that normal? I'm done breaking in, but still not gonna redline the car until it's all warmed up. Thanks for any input.
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10-22-2008, 01:22 PM	#2
svencz Enlisted Member 9 Rep 47 Posts Drives: 2021 X5MC Join Date: Jul 2008 Location: Prague iTrader: (0)	I'd like to know this also. The manual describes the max RPM during brake in, and that you don't have to wait for the car to warm up before driving it, but it doesn't say what is the recommended max RPM before the oil reaches the correct temperature? On my RX-8 it was recommended to keep it below 4,000. Any idea?
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10-22-2008, 02:20 PM	#3
bluemoon Private First Class 10 Rep 189 Posts Drives: 135i Join Date: Jul 2008 Location: Chicago Suburbs iTrader: (0)	No real scientific recommendation but I keep the RPM <3500 until the oil reaches at least 200º just out of habit.
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