Here's a quiz for you DIY'ers

[SlickGT1]

Lol. I'm not here to convince anyone that my theory and logical conclusion is to make people switch.

I'm not the only one saying this. You know there are forums where there are shit load of other BMW owner who went this route. I'm not the creator of this. I'm actually conservative. People just go for the 1.2 bar cap from GAS. I have the e30 1.4 cap. It's identical by the way. People with 1.2 bar caps actually burp sometimes. Mostly when overfilled. I'm sure those people would rather burp a few ounces instead of dumping a few gallons. Suddenly people have cooling components last longer.

All I am saying there is no reason to be concerned with having a 1.4 bar cap if people want a piece of mind. Because sure as shit a 2.0 cap is not the weakest point.

And yes kvc. New BMW cooling systems are now with reasonable pressures. 1.2 -1.4 bars.

[X5only]

I follow you SlickGT1. 1.4 cap is my next "upgrade" for both my X5 and E39. I've read about 1.4 cap in the E39 forums but I think your explanation makes a lot of sense. Coupled with that, I recall one time my daughter, who is a senior in Electrical Engineering, pointing out to me that they had a discussion at school wherein the gist of the conversation was products are deliberately designed to fail. She called it something like "planned obsolescence". It happens where engineering meets capitalism. Products aren’t designed to last, so the brightest and most successful engineers don’t aim to create the best possible machine. They aim for maximum profit through steady sales. In other words, our Bimmers aren't the "Ultimate Driving Machine" after all

[g300d]

Originally Posted by X5only

I follow you SlickGT1. 1.4 cap is my next "upgrade" for both my X5 and E39. I've read about 1.4 cap in the E39 forums but I think your explanation makes a lot of sense. Coupled with that, I recall one time my daughter, who is a senior in Electrical Engineering, pointing out to me that they had a discussion at school wherein the gist of the conversation was products are deliberately designed to fail. She called it something like "planned obsolescence". It happens where engineering meets capitalism. Products aren’t designed to last, so the brightest and most successful engineers don’t aim to create the best possible machine. They aim for maximum profit through steady sales. In other words, our Bimmers aren't the "Ultimate Driving Machine" after all

So the correct answer is now E) 2 Bar tank cap?

What did I win? :P

[B-M-W]

Originally Posted by X5only

I follow you SlickGT1. 1.4 cap is my next "upgrade" for both my X5 and E39. I've read about 1.4 cap in the E39 forums but I think your explanation makes a lot of sense. Coupled with that, I recall one time my daughter, who is a senior in Electrical Engineering, pointing out to me that they had a discussion at school wherein the gist of the conversation was products are deliberately designed to fail. She called it something like "planned obsolescence". It happens where engineering meets capitalism. Products aren’t designed to last, so the brightest and most successful engineers don’t aim to create the best possible machine. They aim for maximum profit through steady sales. In other words, our Bimmers aren't the "Ultimate Driving Machine" after all

This is like a conspiracy therory here.

Let me clear something up, it would cost a manufacture MORE money to produce parts that deliberately fail. I work in a manufacturer setting and have been for some time. It just doesn't work this way. You guys that think bmw made a faulty part on porpose have never worked in a manufacture setting with engineers designing, with the other part of the company producing what was engineered. These company's are trying to beat the compition and you think designing faulty parts is a way to win......omg

Slick now you just stated that your research was indeed "a bunch of shit on the forums" right after BC and I explained how you are only going to read the bad. Find me an example of a guy who got 200k out of his cooling system. You won't because he's one of the serval million bmw drivers without cooling issues that are not posting on forums.

Well said BC.

[SlickGT1]

Originally Posted by B-M-W

This is like a conspiracy therory here.

Let me clear something up, it would cost a manufacture MORE money to produce parts that deliberately fail. I work in a manufacturer setting and have been for some time. It just doesn't work this way. You guys that think bmw made a faulty part on porpose have never worked in a manufacture setting with engineers designing, with the other part of the company producing what was engineered. These company's are trying to beat the compition and you think designing faulty parts is a way to win......omg

Slick now you just stated that your research was indeed "a bunch of shit on the forums" right after BC and I explained how you are only going to read the bad. Find me an example of a guy who got 200k out of his cooling system. You won't because he's one of the serval million bmw drivers without cooling issues that are not posting on forums.

Well said BC.

Listen guy. Find another thread. This point on I'm just going to ignore your ass. You have provided nothing but shitty interpretation of every fucking word to your liking without adding anything to the discussion. You clearly need to get the last word in. Go ahead. Simple as that. Open up Google and do some research. Even simpler than that, follow the links I provided for your lazy ass. There are people attaching gauges to their cooling system on the e39 forum. All you are doing is trying add your 2 pennies of nonsense.

Only thing going your way in this thread is the cool aid you drank when you bought your whatever car. Don't preach shit to me. I guarantee you every item on mine is bought from dealer. Your research is shit, there is none of it. Find me a case where a lower bar cap has failed anyone and I will remove you from my ignore list. Adult discussion over. I entertained your ass long enough.

[X5only]

Originally Posted by B-M-W

This is like a conspiracy therory here.

Let me clear something up, it would cost a manufacture MORE money to produce parts that deliberately fail. I work in a manufacturer setting and have been for some time. It just doesn't work this way. You guys that think bmw made a faulty part on porpose have never worked in a manufacture setting with engineers designing, with the other part of the company producing what was engineered. These company's are trying to beat the compition and you think designing faulty parts is a way to win......omg

........

Conspiracy theory? Hmph, sounds like you're lacking in the perspective of the bigger picture here. In fact, the European Union is currently beginning to address this problem. Here's some reading for ya, and read it in its entirety, not just the first few lines:

https://en.wikipedia.org/wiki/Planned_obsolescence

[bcredliner]

Originally Posted by SlickGT1

Lol. I'm not here to convince anyone that my theory and logical conclusion is to make people switch.

I'm not the only one saying this. You know there are forums where there are shit load of other BMW owner who went this route. I'm not the creator of this. I'm actually conservative. People just go for the 1.2 bar cap from GAS. I have the e30 1.4 cap. It's identical by the way. People with 1.2 bar caps actually burp sometimes. Mostly when overfilled. I'm sure those people would rather burp a few ounces instead of dumping a few gallons. Suddenly people have cooling components last longer.

All I am saying there is no reason to be concerned with having a 1.4 bar cap if people want a piece of mind. Because sure as shit a 2.0 cap is not the weakest point.

And yes kvc. New BMW cooling systems are now with reasonable pressures. 1.2 -1.4 bars.

I'm also only offering my opinion, not saying you are wrong. I'm certainly not Dr. cooling system. I'm sure you know the ratings of the current pressure cap used or an E30 is not necessarily evidence that it works on E53s. Or even if that is the solution on a 2002 4.4 it is not necessarily the solution on a 4.6 of the same year or 2003 4.4. Only saying it is important to dissect the input before drawing a conclusion contrary to BMW specs. Your input is still a valid consideration and could be absolutely the best route to go and, yes, others have gone that route.

if I was experiencing failing expansion tanks at less miles than my expectations I would want to find a solution though I would be suspicious and checking that something else was the root cause and the tank was a symptom. If nothing was amiss, I wouldn't be concerned if I was getting a 50,000 mile life from an expansion tank. Generalizing (very dangerous) that would be 4 years at 15,000 miles a year and a relatively inexpensive cost and easy DIY. Besides, new parts are my drug of choice.