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2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 #5264484 11/11/19 07:12 PM
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heynow Offline OP
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2010 BMW X5 Xdrive35d twin turbo diesel.
All emissions equipment deleted, about 380hp and 550lb ft with tune. 210,000 on vehicle, 10,000 on Mobil Delvac 15w40 and a Hengst filter.
Driving was done over the past year in Las Vegas, a mix of city and highway. About a quart of make up oil was added over the interval.

I experimented with a couple different cone air filters during this interval and had the intake opened up multiple times, which could explain the silicon reading.
Also have had a consistent minor loss of coolant for the past 20kmi with no obvious external leak, which could explain the sodium.

[Linked Image]

Last edited by heynow; 11/11/19 07:13 PM.

1991 Acura NSX
2010 X5 35d twin turbo diesel
2005 BMW r1200GS
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: heynow] #5264693 11/12/19 01:20 AM
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Gubkin Offline
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CK-4 ?

BMW X5 35d or 3.0D ?

Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: heynow] #5264754 11/12/19 06:37 AM
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BMWTurboDzl Offline
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Originally Posted by Gubkin
CK-4 ?

BMW X5 35d or 3.0D ?


It's the BMW M57 3 liter with sequential turbos (1 small + 1 large).



OP: Nice report. Coolant leak could be the head gasket.

Q for OP: Original injectors?

Last edited by BMWTurboDzl; 11/12/19 06:39 AM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: BMWTurboDzl] #5264818 11/12/19 08:19 AM
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heynow Offline OP
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Originally Posted by BMWTurboDzl
[quote=Gubkin]CK-4 ?
.

Q for OP: Original injectors?


I've owned the vehicle from 189kmi to now at 210kmi. Nearly every other part I've serviced has been original, and when I pulled the injectors to replace the valve cover gasket they all looked pretty much the same age. So I would assume yes.

Part of my reason for the UOA was to see if maybe I have a leaking injector which could be causing slightly lower than expected MPG. Based on fuel dilution that doesn't seem to be the case.


1991 Acura NSX
2010 X5 35d twin turbo diesel
2005 BMW r1200GS
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: heynow] #5264874 11/12/19 09:49 AM
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BMWTurboDzl Offline
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Originally Posted by heynow
Originally Posted by BMWTurboDzl
[quote=Gubkin]CK-4 ?
.

Q for OP: Original injectors?


I've owned the vehicle from 189kmi to now at 210kmi. Nearly every other part I've serviced has been original, and when I pulled the injectors to replace the valve cover gasket they all looked pretty much the same age. So I would assume yes.

Part of my reason for the UOA was to see if maybe I have a leaking injector which could be causing slightly lower than expected MPG. Based on fuel dilution that doesn't seem to be the case.


Perhaps the mpg drop is due to the "winter blend" of diesel? Depending on the pre-EGR delete mileage the intake tract could have soot buildup. The X5 had a low and high pressure EGR so the intake didn't accumulate soot as quickly as the 335d which only had a high pressure EGR but at your mileage it might need carbon blasting. shrug

Last edited by BMWTurboDzl; 11/12/19 09:50 AM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: BMWTurboDzl] #5265166 11/12/19 03:19 PM
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heynow Offline OP
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Originally Posted by BMWTurboDzl
Originally Posted by heynow
Originally Posted by BMWTurboDzl
[quote=Gubkin]CK-4 ?
.

Q for OP: Original injectors?


I've owned the vehicle from 189kmi to now at 210kmi. Nearly every other part I've serviced has been original, and when I pulled the injectors to replace the valve cover gasket they all looked pretty much the same age. So I would assume yes.

Part of my reason for the UOA was to see if maybe I have a leaking injector which could be causing slightly lower than expected MPG. Based on fuel dilution that doesn't seem to be the case.


Perhaps the mpg drop is due to the "winter blend" of diesel? Depending on the pre-EGR delete mileage the intake tract could have soot buildup. The X5 had a low and high pressure EGR so the intake didn't accumulate soot as quickly as the 335d which only had a high pressure EGR but at your mileage it might need carbon blasting. shrug


I did all the standard maintenance when I bought the car,
Intake manifold cleaning
Valve cover gasket
Intake manifold gaskets
Thermostat
Fuel filter

Avg mpg went up from 18 to about 20 after the tune and deletes. I'm just shocked to hear some people say they get 30mpg in their X5. I supposed my heavy 20 inch wheels, 40 weight oil, and "spirited" driving don't really help much either.


1991 Acura NSX
2010 X5 35d twin turbo diesel
2005 BMW r1200GS
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: heynow] #5267192 11/14/19 02:20 PM
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Audios Offline
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Do you get winter blend in nevada? Other than that the report looks great. Its very typical for BMWs to use coolant in between intervals, most need a top off when they come through.


2002 VW Golf TDI-T5 10/30
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW-Twin Power 10/60
2003 BMW M5-M1 15/50
1998 BMW M3/4/5-M1 10/40
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: Audios] #5267195 11/14/19 02:22 PM
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heynow Offline OP
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Originally Posted by Audios
Do you get winter blend in nevada? Other than that the report looks great. Its very typical for BMWs to use coolant in between intervals, most need a top off when they come through.


Not sure if we get a winter blend or not. My fuel mileage stays pretty consistent throughout the year though.


1991 Acura NSX
2010 X5 35d twin turbo diesel
2005 BMW r1200GS
Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: heynow] #5274662 11/22/19 02:56 PM
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jayg Offline
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Did you delete the EGR with just programming or physically remove it? I've seen many EGR systems deleted with tuning that keeps the valve asleep if you will, but leaves the EGR cooler in place and can still leak coolant from O- rings in to the motor.


2019 Toyota Prius E-AWD- TGMO 0w16
2017 Ram 1500 Ecodiesel- CP Triton ECT 5w40
1973 Datsun 240Z 10w30- VWC from '73
...and a bunch of old motorcycles




Re: 2010 BMW X5 35d M57 Twin Turbo Diesel 10kmi Delvac 1300 Super 15w40 [Re: jayg] #5274709 11/22/19 03:52 PM
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heynow Offline OP
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Originally Posted by jayg
Did you delete the EGR with just programming or physically remove it? I've seen many EGR systems deleted with tuning that keeps the valve asleep if you will, but leaves the EGR cooler in place and can still leak coolant from O- rings in to the motor.


Both EGR systems and coolers totally removed.


1991 Acura NSX
2010 X5 35d twin turbo diesel
2005 BMW r1200GS
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