GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Odd behavior....

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 2, 2020 | 10:48 PM
  #26  
dhurley's Avatar
Member
 
Joined: Dec 2018
Posts: 247
Likes: 59
From: Lawrence, Kansas
GL320
Originally Posted by Yup497
Dhurley so since the color thats leaking is the greenish color I SHOULD stick with Pentosin CHF 11S???
I would look in your owners manual for the power steering fluid spec that it should be. Spec 236.3 is ATF. Spec 345.0 is CHF. Then buy a cheap turkey baster and remove a little bit of power steering fluid to see what the color truly is. I just took this picture in my garage. Both fluids are new genuine MBZ and wiped on to a clean paper towel. CHF is a dark green in the bottle, but light green when wiped on a towel.


345.0 MBZ CHF 11S on the left, 236.3 MBZ ATF on the right.


Originally Posted by DennisG01
Maybe I mispoke above. The manual states that either MB brand Power Steering fluid or ATF Dex III can be used. There's no mention of them not being mixable. Somewhere else I read that they can be mixed, too.

Are you positive about Pentosin not mixing with ATF? I think the reason I made that assumption was that I have been mixing Pentosin with MB Fluid for a couple years now. So... if ATF can be mixed with MB Fluid and Pentosin can be mixed with MB Fluid... then doesn't that mean that Pentosin can be mixed with ATF?
MB 236.3 ATF is your standard Dex 3. People in the BMW and Porsche world have complained for years that CHF and ATF will eat seals and hoses when mistakenly mixed together. CHF is also a much thinner viscosity and a popular choice in cold climates.

Last edited by dhurley; Mar 2, 2020 at 10:52 PM.
Reply
Old Mar 3, 2020 | 08:40 PM
  #27  
Yup497's Avatar
Thread Starter
Senior Member
 
Joined: Oct 2017
Posts: 302
Likes: 43
From: Saint Louis
2010 GL550 | 2020 S560
Originally Posted by dhurley
I would look in your owners manual for the power steering fluid spec that it should be. Spec 236.3 is ATF. Spec 345.0 is CHF. Then buy a cheap turkey baster and remove a little bit of power steering fluid to see what the color truly is. I just took this picture in my garage. Both fluids are new genuine MBZ and wiped on to a clean paper towel. CHF is a dark green in the bottle, but light green when wiped on a towel.


345.0 MBZ CHF 11S on the left, 236.3 MBZ ATF on the right.




MB 236.3 ATF is your standard Dex 3. People in the BMW and Porsche world have complained for years that CHF and ATF will eat seals and hoses when mistakenly mixed together. CHF is also a much thinner viscosity and a popular choice in cold climates.

Okay thank you for the advice. I'll report back with my findings. Thanks again everyone.
Reply

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


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 05:20 AM.

story-0
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-1
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-2
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-3
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-4
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-5
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-6
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-7
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE
story-8
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE
story-9
8 Mercedes Models With Poor Reliability Records

Slideshow: From problematic air suspensions to early dual-clutch transmission issues, these specific models and years stand out as the least dependable modern Mercedes vehicles.

By Verdad Gallardo | 2026-03-26 18:08:10


VIEW MORE