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  #11  
Old 09-07-2017, 12:12 PM
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I'm the original owner, an 05 and had the seals completed about 2/3 years ago. Truck now has 87k. Back then, maybe 75k.
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  #12  
Old 11-10-2018, 11:35 PM
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Purchased 08 750Li with N62TU engine at 79k miles (back in oct 2016), and had to do the smoke/emission test and it failed at visual idle. Replaced all valve stem seals (99500 miles) and car passed smoke/emission test with no problem.
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  #13  
Old 11-11-2018, 03:22 PM
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Quote:
Originally Posted by itscoo2pyopants View Post
2005

144k miles

No seal failure, no smoking
Iím at 162k now, still no issues.
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  #14  
Old 11-11-2018, 07:32 PM
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120K now still good. BUT I think whoever had the X5 before I, did repair it. Because it has silicone around the valve covers seals.
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E36 M3 95-sold
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E53 X5 4.4 05-the beast
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  #15  
Old 11-11-2018, 10:39 PM
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207,000km still running strong

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  #16  
Old 11-11-2018, 11:35 PM
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05 4.8is (12/04 build) with 118k and smoking on extended idle only.

Just got it couple months ago and had the issue before I bought the car so who knows how long is been like this. Previous owner had no clue it did or not.

Getting mine done by an Indy this Friday.


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  #17  
Old 11-12-2018, 01:08 AM
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Quote:
Originally Posted by mr_robot View Post
05 4.8is (12/04 build) with 118k and smoking on extended idle only.

Just got it couple months ago and had the issue before I bought the car so who knows how long is been like this. Previous owner had no clue it did or not.

Getting mine done by an Indy this Friday.


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Suggest that you check the PCV first since it's cheap to do and most of the time peoples issues with smoking is not the valve guides.

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  #18  
Old 11-12-2018, 04:04 PM
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jabstick420 is on a distinguished road
178,000

Valve seals haven't been done.

Smoke on extended idle. Like 10min operating temp

Did PCV with no change.

Usually change oil between 5-7K, haven't had the check oil light
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  #19  
Old 11-12-2018, 04:27 PM
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^I'm at the same status as jabstick420.

Been smoking on extended idle since I bought it @ 90,000 miles. I did both CCV diaphragms with no change. It now needs valve covers so I'll be doing the VSS at the same time.

I switched 10w50 (I think) oil and use some Lucas treatment with each oil change it DRAMATICALLY improves the issue. Almost no oil consumption and very difficult to get it to smoke. After the VSS and all gaskets I will switch back to OE recommended viscosity and stop using the Lucas.

Currently at 122,000 miles.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
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  #20  
Old 11-12-2018, 04:56 PM
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Same status as Crystalworks. 128k miles and been changing oil every 5k miles. Using lucas additive and heavy oil but still smokes on extended idle (+10 minutes). Changed valve covers gaskets and all other gaskets (timing, vauum pump gaskets oil deep stick, oil cap etc) twice, refusing to believe it's the valve stem seals - I believed (hoped) it was vacuum leaks. What a waste of time, money and energy. Changing valve covers gaskets is a tough job.

As we speak I'm doing the valve stem seals. Finished bank1 and now tackling bank2. Cylinder 5 done and now on cylinder 8. It's a grueling task being my first time doing it. Requires patience and patience and yet more patience. Not hard as such but very time consuming.
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Last edited by X5only; 11-12-2018 at 06:54 PM.
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