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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 09-17-2013, 11:51 AM   #81
adaseb
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I still have my original cooling system except the for pump and thermostat but decided to order all the parts for a cooling system refresh anyways to avoid being stranded and having to get it towed. If this was something such as the final stage resistor or the AC belt I would just wait for it to break and then replace it. But its a huge hassle being stranded, paying for towing, and being without a car for a week while you wait for the parts. Plus we get -30C weather here in the winter and I rather not have to attempt this job in the middle of winter and rather just do it now while its still warm.

Plus I noticed some white residue on my ET such as in this photo.

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Old 09-17-2013, 12:36 PM   #82
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Looks like a leaking cap. $10.00.
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Old 09-17-2013, 06:17 PM   #83
adaseb
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Looks like a leaking cap. $10.00.
Mine is not leaking from the cap, just has the white residue. Its not my photo.
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Old 09-17-2013, 06:30 PM   #84
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Got it.

If you have white residue on the expansion tank and it is not leaking from the cap there are two other possibilities.

1) You spilled some on it when you last filled it.
2) You have a cracked and leaking expansion tank.

Clean it off and see if it comes back. If it does, you have #2 above.
It is important to check your coolant level every day right now, while you are diagnosing this problem.
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Old 09-18-2013, 10:57 AM   #85
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Just turned 180K! Thermostat went bad at 30K and the pump was leaking and the shaft was wobbling at 114K. So, a new thermostat and Stewart pump went in. Everything else is original!
Now at 12.5 years and 194K. Same status as above. As before, I'll be sure to let everyone know when it finally takes a dump! Oh yeah, green stuff since 114K.
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Old 09-18-2013, 12:28 PM   #86
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109k miles on a 2000 328Ci. Replaced a failed thermostat, and swapped in a "gently used" (60k miles) water pump from my M Coupe when I upgraded that to a Stewart. I keep a spare WP in the trunk. Radiator is original, as is the expansion tank, I just check everything regularly. I think the cooling system concern is a genuine one, overheat a BMW at your peril, but it is also overplayed too...... it is a very simple system to work on, and being observant and replacing items as they fail/show signs of failure is not a problem for me. At least for this car, I'm a little more "preventive" minded for my M Coupe.

The "ticking time bomb" is not being stranded at the side of the road...... that is what saves you. The problem is when you try to make it home with the needle in the red. ;-)

Incidentally, my E34 just crossed 300k miles and is on its third WP, 2nd ET and the 2nd radiator just started to show white residue at the plastic/aluminum seals.
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Old 09-18-2013, 12:41 PM   #87
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109k miles on a 2000 328Ci. Replaced a failed thermostat, and swapped in a "gently used" (60k miles) water pump from my M Coupe when I upgraded that to a Stewart. I keep a spare WP in the trunk. Radiator is original, as is the expansion tank, I just check everything regularly. I think the cooling system concern is a genuine one, overheat a BMW at your peril, but it is also overplayed too...... it is a very simple system to work on, and being observant and replacing items as they fail/show signs of failure is not a problem for me. At least for this car, I'm a little more "preventive" minded for my M Coupe.

The "ticking time bomb" is not being stranded at the side of the road...... that is what saves you. The problem is when you try to make it home with the needle in the red. ;-)

Incidentally, my E34 just crossed 300k miles and is on its third WP, 2nd ET and the 2nd radiator just started to show white residue at the plastic/aluminum seals.
I don't see how that is the original system if y'all replace the two most critical parts.
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Old 09-18-2013, 12:59 PM   #88
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I don't see how that is the original system if y'all replace the two most critical parts.
I never said I was on the original system. Was just detailing what I had done, in comparison to some who had replaced everything.
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Old 09-18-2013, 01:02 PM   #89
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I never said I was on the original system. Was just detailing what I had done, in comparison to some who had replaced everything.
No doubt you can leave in old parts and be fine. But seriously.. it's chump change. Why risk it? you're going to risk your engine over a few cheeseburgers? Also by re-using old parts, you are using weakened seals. Ask long-time member ///MPR77 (300,000+ miles, a few complete cooling system replacements-lesson learned) what he thinks about re-using old parts. He might be able to tell you what happens when you re-use a hose...
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Old 09-18-2013, 06:59 PM   #90
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I'm still 100% good. Debating just doing a coolant flush at the end of this season, so I can piss Mango off even more.

120k and counting, build date 10/98!
So, it was midnight, you had a few drinks, and decided to resurrect a year-old thread to try to rustle Mango's jimmies?

One good thing came of it. I checked my coolant level and found it low by about a cup. Looks like I've got a slow leak in my water pump gasket.
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Old 09-18-2013, 07:01 PM   #91
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Looks like I've got a slow leak in my water pump gasket.
Replace the entire front end of your car.
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Old 09-18-2013, 07:10 PM   #92
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Old 09-18-2013, 07:23 PM   #93
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Replace the entire front end of your car.
Since I have to take it off to get to the water pump, I might just do that.
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Old 09-18-2013, 07:26 PM   #94
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So, it was midnight, you had a few drinks, and decided to resurrect a year-old thread to try to rustle Mango's jimmies?

One good thing came of it. I checked my coolant level and found it low by about a cup. Looks like I've got a slow leak in my water pump gasket.
that would be a good name for a bar

what do you say? partners?
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Old 09-18-2013, 07:36 PM   #95
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Re: Who else still has the original cooling system?

I do! 78k miles on my 02 M3!

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Old 09-18-2013, 07:38 PM   #96
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that would be a good name for a bar

what do you say? partners?
How about "Mango's jimmies Wild Irish Pub"? We can serve Guiness by the quart.
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Old 09-18-2013, 09:14 PM   #97
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Who else still has the original cooling system?

I always wondered if perhaps the reliability of our cars' cooling systems had anything to do with us putting the green stuff in instead of BMW blue. I was thinking that maybe after 70-80 thousand miles of the green stuff it might wear down our plastics just enough to cause damage.


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Old 09-18-2013, 09:55 PM   #98
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Who else still has the original cooling system?

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I always wondered if perhaps the reliability of our cars' cooling systems had anything to do with us putting the green stuff in instead of BMW blue. I was thinking that maybe after 70-80 thousand miles of the green stuff it might wear down our plastics just enough to cause damage.


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It should always be blue with the coolant. Common sense. Lol


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Old 09-18-2013, 10:40 PM   #99
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How about "Mango's jimmies Wild Irish Pub"? We can serve Guiness by the quart.
sounds good to me. DMAX can be bouncer
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Old 09-18-2013, 11:20 PM   #100
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I always wondered if perhaps the reliability of our cars' cooling systems had anything to do with us putting the green stuff in instead of BMW blue. I was thinking that maybe after 70-80 thousand miles of the green stuff it might wear down our plastics just enough to cause damage.


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I got my coolant flushed at the dealership around 60k miles. That's a big reason that I haven't done anything as PM yet. That, and 3 other cars that need parts to keep them on the road, never mind PM.
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