| Author |
Message |
Ali Haas (Aehaas)
Junior Member
Username: Aehaas
Post Number: 78
Registered: 5-2003
| | Posted on Saturday, August 09, 2003 - 9:41 am: | |
The MB product measurements have been done. This is from new in the 1 gal jug. pH is 6.8, EG is 96 percent. I will repeat the label's instructions to use only a 40 to 55 percent solution for the proper effect.
That is in contrast to the label from Prestone that recommends a mixture of 50 to 70 percent.
I was using 70 percent of the MB product but will now go to 50-50.
aehaas |
Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1628
Registered: 4-2002
| | Posted on Monday, August 04, 2003 - 7:24 pm: | |
Well, I went to the website (www.redlineoil.com) to try to give some sort of summary, but the tech page is so full of neat stuff that I couldn't find a satisfactory way of summarizing it.
Slight correction: regular E.G. coolant is 7.5-11ph, Redline Water Wetter is 8.6. |
dave handa (Davehanda)
Intermediate Member
Username: Davehanda
Post Number: 1484
Registered: 5-2001
| | Posted on Monday, August 04, 2003 - 7:08 pm: | |
Ah Hans,
Save us the work and give us a quick synopsis... :-) |
Hans E. Hansen (4re_gt4)
Intermediate Member
Username: 4re_gt4
Post Number: 1623
Registered: 4-2002
| | Posted on Monday, August 04, 2003 - 6:54 pm: | |
What is interesting is that the popular ethylene glycol brands are ph 7-11, or there abouts. See Redline Oil's website and look up their "Water Wetter" product's tech notes for ph comments. |
Ali Haas (Aehaas)
Junior Member
Username: Aehaas
Post Number: 76
Registered: 5-2003
| | Posted on Monday, August 04, 2003 - 5:06 pm: | |
Today I got the MSDS from Valvoline. They make the Mercedes antifreeze. I have not checked the actual value on my meter but the published ethylene glycol in the jar is 89 percent. There is also up to 10 percent diethylene glycol and up to 7 percent sodium tetraborate pentahydrate in there. Apparently these values vary. The published pH is 6 to 7. The variability is interesting. Why not a constant amount?
I only now read the instructions on the label. I assumed it was the same as the Prestone product. Never make assumptions. Prestone instructions say to use 50 to 70 percent, as discussed in detail before. The MB product recommends 40 to 55 percent ethylene glygol. They are very specific about this ratio but state it as percent ethylene glycol. Yet their label shows a graph of say 8 qts. product to be mixed with 8 qts. of water to give a 50-50 mixture. This would not be a 50-50 mixture of ethylene glycol as the jar is only 89 percent EG.
I thought I had it all figured out. Guess again. I will take some actual pH and ethylene glycol measurements with my meters in a few days.
aehaas |
Ali Haas (Aehaas)
Junior Member
Username: Aehaas
Post Number: 73
Registered: 5-2003
| | Posted on Thursday, July 31, 2003 - 7:13 pm: | |
I checked my nearly full, slightly overdiluted gallon jug and found it to be 60 percent. I wanted to test the full stregth stuff but evidently I do not have any. I plan on getting a few gallons and change the fluid on the 575 when the Florida weather cools a little. Either that or finish the A/C install in my garage, then do the change sooner. I do not like that green stuff.
ali |
dave handa (Davehanda)
Intermediate Member
Username: Davehanda
Post Number: 1438
Registered: 5-2001
| | Posted on Thursday, July 31, 2003 - 6:40 pm: | |
Ali,
this is good info. I suppose you did mix up some 70% to test your baseline? I have always added straight coolant when I needed to top up (rarely) seems this would be adviseable based on your findings...I only added straight, cause I am too lazy to mix it, though I recently bought some pre-mix 50/50 stuff. |
Ali Haas (Aehaas)
Junior Member
Username: Aehaas
Post Number: 71
Registered: 5-2003
| | Posted on Thursday, July 31, 2003 - 4:03 pm: | |
I just took delivery on a MISCO $700 refractometer. As readers will recall, I put 70 percent, clear MB solutions into my cars.
From my previous posts I will reiterate that glycol manufacturers recommend 50 to 70 percent, not less nor more. There are additives that are corrosive at higher concentrations and lubricants for the water pump that are needed at minimum concentrations to name a few properties.
In my 70 percent filled vehicles, the 1-2 year ago fill is now at 53 percent and the 3 - 4 year ago fill is at 45 percent. Obviously the glycol evaporates faster than the water. I always topped with 70 percent when needed.
The 3 month old 575 M is at 36 percent. I only have 1,500 miles on it and no track events as yet. Is this all they put in there? The owners manual does recommend a 50 percent mix. Interesting.
ali |