cooling fluid question: 523i - BMW Forum - BimmerWerkz.com
BMW Forum BMW Forum

Ľ Auto Insurance

» Featured Product
Ľ Wheel & Tire Center

Go Back   BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 5-Series (E12,E28, E34, E39, E60)
Register Home Forum Active Topics Gallery / Showroom Auto Loans Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 07-11-2006, 05:27 AM   #1 (permalink)
n00b
 
Join Date: Jun 2006
Car:
Posts: 9
Photos:
JMVPMD is on a distinguished road
cooling fluid question: 523i

The cooling fluid in my 523 '98 with 80k looks quite dirty. I would like to replace it. Which type of fluid to buy: Green or brown stuff? OAT? Any specific recommended brand? Thanks. JM
JMVPMD is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 07-11-2006, 09:21 AM   #2 (permalink)
cnn
Neutral Member
 
Join Date: Apr 2006
Car:
Posts: 76
Photos:
cnn is on a distinguished road
Here is the write-up

Quote:
Originally Posted by JMVPMD
The cooling fluid in my 523 '98 with 80k looks quite dirty. I would like to replace it. Which type of fluid to buy: Green or brown stuff? OAT? Any specific recommended brand? Thanks. JM
Here in the US,I use Prestone extended life. Good for all cars......they claim.
BMW coolant is expensive if you decide to go that route.

Here is my write-up that I posted at bimmerboard:
http://bimmerboard.com/forums/posts/199986

HTH.

cn
98 528i
cnn is offline   Reply With Quote
Old 07-11-2006, 09:32 AM   #3 (permalink)
LOS
4th Gear Member
 
LOS's Avatar
 
Join Date: Apr 2004
Location: L.A Calif.
Car: 97 540IA, 95 840CI
Posts: 863
Photos:
LOS is an unknown quantity at this point
JM,
stick to the BMW coolant.
Don't cut corners when it comes to the cooling system on these cars. Our cars tend to run hotter than other cars.
Another point, on newer E39's (00,03), the coolant is different. This is due to aluminum & other materials being used.

CNN,
that was a great write up on your part! Lots of great info.

LOS
LOS is offline   Reply With Quote
Old 07-11-2006, 10:35 AM   #4 (permalink)
cnn
Neutral Member
 
Join Date: Apr 2006
Car:
Posts: 76
Photos:
cnn is on a distinguished road
Actually nothing special about BMW fluids (ATF or coolant etc.)

Quote:
Originally Posted by LOS
JM,
stick to the BMW coolant.
Don't cut corners when it comes to the cooling system on these cars. Our cars tend to run hotter than other cars.
Another point, on newer E39's (00,03), the coolant is different. This is due to aluminum & other materials being used.

CNN,
that was a great write up on your part! Lots of great info.

LOS
Many car makers need to survive because profits from selling new car is very tight.
So they "formulate" new fluids (ATF coolant) to keep their margin of profit.
Chemically theses fuluids (ATF or antifreeze) not similar to well-known brands like Prestone.
My cousin, a 2-yr bmw mechnic has been using Prestone in all his customer's bmws for years.
No problems at all.

I have used Prestone in all my bimmers last 10 years.

Actually the metal does not change, what chanegs is the composition of additives, so they come out with new recommedations.
Prestone extended life is a very good product.

The Audi club says the same, use only Audi fluid.

Personally, I woukld not sweat over antifreeze.
Besides, my radiator is changed every 5y/100K anyway.
cnn is offline   Reply With Quote
Old 07-11-2006, 11:24 AM   #5 (permalink)
LOS
4th Gear Member
 
LOS's Avatar
 
Join Date: Apr 2004
Location: L.A Calif.
Car: 97 540IA, 95 840CI
Posts: 863
Photos:
LOS is an unknown quantity at this point
We had a discussion regarding this issue awhile ago. Another member billB, had a great argument which I happened to agreed with.
Personally, a saving a couple of bucks over a 50k car is not worth it to me. Transmission fluid is another touchy subject. I rather get their fluid than spend 8k on a transmission. I have heard some bad stories on 8 series.
We can go back and forth on this issue. It comes down to personal choice.

Please don't take my reply the wrong way. You do have some great points but like I said, it comes down to a personal choice & piece of mind.

LOS
LOS is offline   Reply With Quote
Old 07-11-2006, 03:11 PM   #6 (permalink)
cnn
Neutral Member
 
Join Date: Apr 2006
Car:
Posts: 76
Photos:
cnn is on a distinguished road
LOS agree with you, I was trying to point out

Quote:
Originally Posted by LOS
We had a discussion regarding this issue awhile ago. Another member billB, had a great argument which I happened to agreed with.
Personally, a saving a couple of bucks over a 50k car is not worth it to me. Transmission fluid is another touchy subject. I rather get their fluid than spend 8k on a transmission. I have heard some bad stories on 8 series.
We can go back and forth on this issue. It comes down to personal choice.

Please don't take my reply the wrong way. You do have some great points but like I said, it comes down to a personal choice & piece of mind.

LOS
the facts that there is no secret formula in "expensive" car.
Just another fluid brand.

Metallurgically, there is almost no difference in the aluminum head/block found in Toyota corolla or Honda Civic (the so-called cheaper cars)
vs bimmer.

Also Bentley or Porsche, or Lamborghini engine is certainly more expensive but the principles of metallurgy is the same.

So a Good Prestone extended life antifreeze is as good as dealer fluid.
It is well known in the delaers circle that dealer fluids are given "special names" (like VW ATf, Audi PS fluid, or BMW Lifetime fill) not because they are special, but rather to keep their profit going.

I made a typo error, my cousin is a bmw mechanic in Los Angels and has been using Prestone on all his customers BMW during the last 20 years. No problems.

When we (including me) drive an expensive car like bimmer, we tend to think we need to pour the most expensive fluids (most exp gasoline, most exp ATf, most exp aoolant) in, otherwise the car fails.

I used to think only Volvo fluids could go in my Volvo (1991 240) but after doing research, I found out how foolish I was.

Putting Prestone in bimmer is as good as BMW coolant. Will do no harm.
Using dealer fluid IMHO promotes more scare tactic.
I am not trying to save $ but I distinctly hate scare tactic.

Just my 0.02........
cnn is offline   Reply With Quote
Old 07-11-2006, 04:07 PM   #7 (permalink)
LOS
4th Gear Member
 
LOS's Avatar
 
Join Date: Apr 2004
Location: L.A Calif.
Car: 97 540IA, 95 840CI
Posts: 863
Photos:
LOS is an unknown quantity at this point
Just curious, do buy premium or regular gas for your bimmer?
Maybe another topic of discussion...:

LOS
LOS is offline   Reply With Quote
Old 07-11-2006, 04:42 PM   #8 (permalink)
cnn
Neutral Member
 
Join Date: Apr 2006
Car:
Posts: 76
Photos:
cnn is on a distinguished road
gas ha!

Quote:
Originally Posted by LOS
Just curious, do buy premium or regular gas for your bimmer?
Maybe another topic of discussion...:

LOS
Thanks for asking, for the last 10 years with different bimmers, I stay away from "no name" stations, but I go to:
-BP
-Shell
-Amoco
- Citgo

And use 87 octane. Sometimes 89.
Never put in 91.

I am not worried because bosch-fuel-injection can handle even 87 octane.
I have driven to 200K without any engine problems.
Mind you though I take very good care of the car mechanically.
cnn is offline   Reply With Quote
Old 07-12-2006, 09:00 AM   #9 (permalink)
LOS
4th Gear Member
 
LOS's Avatar
 
Join Date: Apr 2004
Location: L.A Calif.
Car: 97 540IA, 95 840CI
Posts: 863
Photos:
LOS is an unknown quantity at this point
I watched a program on the history channel the other day called "the history of gasoline". In short, premium gas has additional additives to keep the injectors clean, better burn + performance. Every top company has their own formula.
This guy at work experimented with regular and premium gas on his truck. His results were interesting. He got better milage with premium gas. He performed his test several times and the result was the same.

The 840 requires 91. The 540 has 87 min stamped on the cap. The owners manual states that will affect performace if 87 octame is used.

Glad to have you on this forum CNN
LOS
LOS is offline   Reply With Quote
Old 07-12-2006, 02:19 PM   #10 (permalink)
cnn
Neutral Member
 
Join Date: Apr 2006
Car:
Posts: 76
Photos:
cnn is on a distinguished road
These 2 articles sum it up very well

Quote:
Originally Posted by LOS
I watched a program on the history channel the other day called "the history of gasoline". In short, premium gas has additional additives to keep the injectors clean, better burn + performance. Every top company has their own formula.
This guy at work experimented with regular and premium gas on his truck. His results were interesting. He got better milage with premium gas. He performed his test several times and the result was the same.

The 840 requires 91. The 540 has 87 min stamped on the cap. The owners manual states that will affect performace if 87 octame is used.

Glad to have you on this forum CNN
LOS
http://www.popularmechanics.com/auto...tml?page=2&c=y

http://www.popularmechanics.com/auto...tml?page=2&c=y

Two separate issues:
1. Performance: If one wants performance, by all means, use 91 or 93 octane.

2. Fear of engine damage. Many bimmer owners, because they drive "an expensive European" car, fear that using octane 87 will damage their car.
This is "urban legend" and is unfounded fear. They can read above articles.

3. Best bang for buck or $ spent/mile. The question is how to spend the least money and get the most miles.
I don't know if anyone has done this experiement with any car (or even an E39). Using the same car:
- Octane 87: drive 200 miles or so flat road (no hills or mountains)
- Octane 89: drive 200 miles or so flat road (no hills or mountains)
- Octane 91: drive 200 miles or so flat road (no hills or mountains)
- Octane 93: drive 200 miles or so flat road (no hills or mountains)

Then compare mpg among these 4 octanes. Then you have the answers.

Personally I have used Octane 87 for the last 10 years in my E23 (1983 735i 5spd @160K) and my current E39: absolutely no problems with engine damage.

90% of the time Octane 87.
10% when I am crazy and in good mood: 91 to get better acceleration.

Highway cruising: actually 87 is fine because you are cruising and not accelerating much.

Car mfg specifies "min octane requirement of 91" not because 87 will damage the engine, but 91 gives the owners a good feel!
We used to put 87 octane in our Cadillac Seville for years (owners manual said 91) and when sold at 200K, it was rock solid engine like new. That Northstar V8 engine is wonderful.

Just my 0.02........

cn
98 528i 5spd 90K

Last edited by cnn; 07-12-2006 at 02:22 PM.
cnn is offline   Reply With Quote
Old 07-12-2006, 02:57 PM   #11 (permalink)
LOS
4th Gear Member
 
LOS's Avatar
 
Join Date: Apr 2004
Location: L.A Calif.
Car: 97 540IA, 95 840CI
Posts: 863
Photos:
LOS is an unknown quantity at this point
Wow!
Lots of great info!
Thank you for sharing your experinces.

LOS
LOS is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 5-Series (E12,E28, E34, E39, E60)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ATF oil? sanjose 5-Series (E12,E28, E34, E39, E60) 3 02-01-2009 01:35 AM
$8.00 Power Steering Fluid Change acoustic 3-Series (E36) 0 05-18-2006 01:11 PM
Brake Fluid Replacement BMW328 3-Series (E36) 2 04-07-2006 02:17 PM
Changing Auto Transmission Fluid billB 5-Series (E12,E28, E34, E39, E60) 8 10-11-2004 09:12 PM
Engine cooling fan question 325iS 3-Series (E36) 5 10-01-2003 04:11 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 01:26 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.