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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 02-16-2015, 10:40 PM
midnightrambler midnightrambler is offline
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Location: Novato, CA
 
Join Date: Apr 2007
Posts: 3
Mein Auto: 2007 Z4 3.0i
coolant

I have a 2007 Z4. The manual states that you never have to change the coolant. My dealer says it should be changed every 2 years. the car has 50,000 miles. What would you recommend?
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  #2  
Old 02-16-2015, 10:43 PM
capvent capvent is offline
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Location: Fort Worth, TX
 
Join Date: Apr 2013
Posts: 9
Mein Auto: Z4
coolant

I have 73k on mine and I have already drained and flushed twice. I would change to save your water pump and to prevent buildup over time. Be sure to use OEM coolant as well.

Last edited by capvent; 02-16-2015 at 10:56 PM.
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  #3  
Old 02-17-2015, 07:17 AM
fred man fred man is offline
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Location: NY
 
Join Date: Jan 2014
Posts: 38
Mein Auto: 06 z4 si/ 15 335I/ FX4
Quote:
Originally Posted by capvent View Post
I have 73k on mine and I have already drained and flushed twice. I would change to save your water pump and to prevent buildup over time. Be sure to use OEM coolant as well.
I couldn't agree anymore!
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  #4  
Old 02-17-2015, 09:25 AM
chickdr chickdr is offline
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Location: Atlanta, GA
 
Join Date: Mar 2009
Posts: 1,119
Mein Auto: '06 M Roadster Imola/Blk
I do mine every 2yrs. I can't agree with the lifetime rating.
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  #5  
Old 02-17-2015, 11:24 AM
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dc_wright dc_wright is offline
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Location: Orlando, Florida
 
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Mein Auto: '96 328iC, '04 325Ci
In the '90s BMW was taking a lot of flak for the cost of regular maintenance. To reduce that cost they designated some of the fluids as "lifetime". Coolant MTF, and ATF in particular got these designations. What wasn't published very widely is that 100K miles was considered to be the "end of life". In general if you follow the lifetime recommendations you'll get to the 90K to 100K mile mark but then have some pretty expensive catch up maintenance to do. In the case of the auto tranny it may be rebuild time.
If you're a BMW CCA member, check Mike Miller's tech section in the Roundel magazine. If you email him he'll provide his "old school" maintenance plan.
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2006 Z4 3.0si Sport Package (But I'll still hang with my "homies" in the E36 forum)
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  #6  
Old 02-17-2015, 02:41 PM
joelselman joelselman is offline
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Location: lake havasu city, az
 
Join Date: Aug 2013
Posts: 83
Mein Auto: 05 Z4 3.0, 01 530
Most of the new technology anti-freezes are stated by the manufacturers of the anti-freeze to be good for 5 years.
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  #7  
Old 02-17-2015, 04:15 PM
kalali kalali is offline
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Location: New Jersey
 
Join Date: Dec 2011
Posts: 422
Mein Auto: 2003 Z4 2.5
I guess it varies from dealer to dealer since my local dealer recommends coolant flush every 4 years. I just had mine done before the winter began. I could have probably done it cheaper but decided to go the dealer route; cost $185.
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