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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #1  
Old 03-13-2019, 08:52 AM
chitown312 chitown312 is offline
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Injector and carbon build up general care

I have a 2010 X5 3.0(none turbo) in my family with about 75k miles. I wanted to get feedback regarding a fuel injector cleaner. Is there a good one and is it recommended? Also what about those places you send in the injector for a professional refurb/cleaning? The X5 is mainly driven in the winter and mostly on the highway. It isn't experiencing any problems now but will rarely be used once the summer comes and I wanted to see if any preventive action would be good in this case.

Also is there easy way to determine if there is enough carbon buildup to justify a walnut blasting? At 75k miles do you just do it if you plan on keeping the car for a long time.
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  #2  
Old 03-13-2019, 09:05 AM
luigi524td luigi524td is offline
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"If it ain't broke - don't fix it. "

Using quality gasoline and frequent highway driving should help keep your fuel system and combustion chambers "clean". I too was a "regular user" of Techron gas treatments; never noticed any cures or ills from it. My infrequent use BMW Z3 gets a techron treatment with it's first Spring-Summer fill-up. But that car is driven less than 1000/miles/year.

That said, since engine performance changes over time, can be difficult for most people to notice - IF you suspect an engine performance issue I'd first have a "QUALIFIED, BMW EXPERIENCED TECH" query your engine / drive train for any issues before simply going for a "heavily marketed " fix for everyone's ills.

Previously I've driven my BMWs well into the 40,000+ miles/year w/o needing any "walnut blasting" - And now that I'm driving less (10,000/yr) I've not seen any need to have this treatment in any of my past 5 BMWs or my current 3 BMWs. But than again, maybe I'm missing something??
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Last edited by luigi524td; 03-13-2019 at 09:08 AM.
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  #3  
Old 03-13-2019, 09:19 AM
chitown312 chitown312 is offline
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Quote:
Originally Posted by luigi524td View Post
"If it ain't broke - don't fix it. "

Using quality gasoline and frequent highway driving should help keep your fuel system and combustion chambers "clean". I too was a "regular user" of Techron gas treatments; never noticed any cures or ills from it. My infrequent use BMW Z3 gets a techron treatment with it's first Spring-Summer fill-up. But that car is driven less than 1000/miles/year.

That said, since engine performance changes over time, can be difficult for most people to notice - IF you suspect an engine performance issue I'd first have a "QUALIFIED, BMW EXPERIENCED TECH" query your engine / drive train for any issues before simply going for a "heavily marketed " fix for everyone's ills.

Previously I've driven my BMWs well into the 40,000+ miles/year w/o needing any "walnut blasting" - And now that I'm driving less (10,000/yr) I've not seen any need to have this treatment in any of my past 5 BMWs or my current 3 BMWs. But than again, maybe I'm missing something??
Was your mentioned experience on direct or port injection engines? I'm curious if direct injection problems are attributed to clogs or just parts failures.
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Old 03-13-2019, 09:30 AM
Autoputzer Autoputzer is offline
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Quote:
Originally Posted by chitown312 View Post
Was your mentioned experience on direct or port injection engines? I'm curious if direct injection problems are attributed to clogs or just parts failures.
Direct injection systems operate at much higher fuel pressures.

Also, direct injection does not wash carbon build up off the intake ports and valves like port (indirect) injection does.

Use a Top Tier Gas brand, and when you see a tanker at a gas station go find another gas station (to avoid collecting sediment stirred up when a gas station gets fuel added to their tanks), and you'll be fine. Our last port-injected car had 147k miles when we sold it, and the engine ran like new. We used Top Tier Gas, and synthetic oil with 8k mile oil changes.
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  #5  
Old 03-13-2019, 09:46 AM
chitown312 chitown312 is offline
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From what I found the 2010 X5 has the N52B30 engine which is port injection. For some reason I thought it was direct injection. If that's the case its a keeper that shouldn't require "normal modern BMW day" cleaning.
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Old 03-13-2019, 09:52 AM
Autoputzer Autoputzer is offline
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Quote:
Originally Posted by chitown312 View Post
From what I found the 2010 X5 has the N52B30 engine which is port injection. For some reason I thought it was direct injection. If that's the case its a keeper that shouldn't require "normal modern BMW day" cleaning.
You don't have to worry about a turbocharger going south, either.

DI and turbochargers improve fuel economy. But, if they fail at any point in the first 150k or 200k miles, there goes all your fuel cost savings. The same goes for hybrid batteries.
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Old 03-13-2019, 10:18 AM
chitown312 chitown312 is offline
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Originally Posted by Autoputzer View Post
You don't have to worry about a turbocharger going south, either.

DI and turbochargers improve fuel economy. But, if they fail at any point in the first 150k or 200k miles, there goes all your fuel cost savings. The same goes for hybrid batteries.
Yep no turbos too. Sounds like whatever repairs it'll need in time would be cheaper than refreshing to a newer model with the privilege of worrying about turbos, direct injection, and carbon build up. The car will probably be driven into the ground.

If I only had the sense to get that engine instead of my completely opposite E70 v8 TT with a warranty.
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