Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #11  
Old 03-22-2010, 01:00 PM
corsair23's Avatar
corsair23 corsair23 is offline
Rising Sun Member
 
Join Date: Jul 2006
Location: Littleton
Posts: 8,697
Default

Quote:
Originally Posted by Romer View Post
Not sure why Matt would need that. It's for testing to see if your coolant is still good and needs changing
I use it for checking what my coolant is "rated for" - i.e. if I am at the proper mix of 50/50 for -32F protection

When I did my flush and fill I ended up more in the 60-70% antifreeze range vs. 50/50 and my temps reflected that. When I attained the proper mix my temps came back down to "normal" for me.

__________________
Jeff Z. (the "not quite as skinny" one)
TLCA #17037
'97 LX450 - aka "The Whale"
'97 FZJ80 Antique Sage AE #267, stock
12/74 FJ40, 2F, SM420, 4" Lift, ARBs, 33" MTRs

:

"...anything else i can do for you guys, how about i wash your car or mow your lawn while you figure out your firewall system? I am now boarderline insane/unibomber." Kipper

"That assumes I'm even capable of pulling and stabbing..." Jacket

"I really like having a detachable unit." Beater
Reply With Quote
  #12  
Old 03-22-2010, 01:10 PM
DaveInDenver's Avatar
DaveInDenver DaveInDenver is offline
Hard Core 4+
 
Join Date: Jun 2006
Location: Larimer County
Posts: 6,475
Default

Quote:
Originally Posted by Romer View Post
Not sure why Matt would need that. It's for testing to see if your coolant is still good and needs changing
Those hygrometers tell you the ratio of coolant-to-water in your mix. The more coolant you have the higher the specific gravity and the higher the float (or floating balls of varying density).

BTW, Jeff, you realize that the specific gravity of anti-freeze is not linear and actually above 70% concentration with water starts to go down? Yeah, at 70% the specific gravity of propylene glycol + water has the same specific gravity as 35%. You really need to judge the accuracy of your tester with your own brain because if it seems odd it might just be odd.

__________________
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29

"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler
Reply With Quote
  #13  
Old 03-22-2010, 01:19 PM
corsair23's Avatar
corsair23 corsair23 is offline
Rising Sun Member
 
Join Date: Jul 2006
Location: Littleton
Posts: 8,697
Default

Cool, thanks for the tip Dave! So, you are saying that at a 70% + concentration of antifreeze things (like the tester) will start behaving as if it were only a 35% concentration? Good to know. I knew I was high on the coolant side but I was more in the 60% range. Now I am (or think I am) at 50/50 - Doesn't sound like you can get to 50/50 with too much coolant but you might wonder why you can't get it to come up by just adding more coolant to the mix
__________________
Jeff Z. (the "not quite as skinny" one)
TLCA #17037
'97 LX450 - aka "The Whale"
'97 FZJ80 Antique Sage AE #267, stock
12/74 FJ40, 2F, SM420, 4" Lift, ARBs, 33" MTRs

:

"...anything else i can do for you guys, how about i wash your car or mow your lawn while you figure out your firewall system? I am now boarderline insane/unibomber." Kipper

"That assumes I'm even capable of pulling and stabbing..." Jacket

"I really like having a detachable unit." Beater
Reply With Quote
  #14  
Old 03-22-2010, 01:25 PM
DaveInDenver's Avatar
DaveInDenver DaveInDenver is offline
Hard Core 4+
 
Join Date: Jun 2006
Location: Larimer County
Posts: 6,475
Default

Quote:
Originally Posted by corsair23 View Post
Cool, thanks for the tip Dave! So, you are saying that at a 70% + concentration of antifreeze things (like the tester) will start behaving as if it were only a 35% concentration? Good to know. I knew I was high on the coolant side but I was more in the 60% range. Now I am (or think I am) at 50/50 - Doesn't sound like you can get to 50/50 with too much coolant but you might wonder why you can't get it to come up by just adding more coolant to the mix
Yes on the behavior. Although, don't use the numbers as exact but just an approximation. It's also only true for propylene glycol (e.g. the so called non-toxic anti-freeze, such as Sierra brand), not ethylene glycol.
__________________
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29

"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler
Reply With Quote
  #15  
Old 03-22-2010, 01:49 PM
pmccumber pmccumber is offline
Hard Core 4+
 
Join Date: Sep 2008
Location: Longmont, CO
Posts: 545
Default

Quote:
Originally Posted by DaveInDenver View Post
Those hygrometers tell you the ratio of coolant-to-water in your mix.
Or when to bottle.
__________________
Paul McCumber - Longmont, CO
1995 FZJ80 - 2004 4Runner -1995 SC300
"It's a 1970 Firebird, the car I've always wanted and now I have it. I Rule!" Lester Burnham - American Beauty
Reply With Quote
  #16  
Old 03-22-2010, 02:59 PM
Hulk's Avatar
Hulk Hulk is offline
Cruise Moab Committee
 
Join Date: Aug 2005
Location: South Side!
Posts: 11,375
Send a message via AIM to Hulk
Default

I added some more 50/50 coolant mix this morning. When I checked the AT fluid, it was still full. I'll check it again tonight after I have driven 10 miles.
__________________
Matt Farr, Centennial, Colorado | Webmaster: TLCA.org
1996 FZJ80 TLCA #4189 WRDY
www.rustybrain.com/cruisers my Rising Sun bio Facebook Twitter Need satellite Internet? Check out: Exede Internet

If you think you can or think you can't, you're right.
Reply With Quote
  #17  
Old 03-22-2010, 03:54 PM
DaveInDenver's Avatar
DaveInDenver DaveInDenver is offline
Hard Core 4+
 
Join Date: Jun 2006
Location: Larimer County
Posts: 6,475
Default

Quote:
Originally Posted by pmccumber View Post
Or when to bottle.
I was going through my mind the whole time... Oh yeah.
__________________
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29

"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler
Reply With Quote
  #18  
Old 03-22-2010, 05:21 PM
Romer's Avatar
Romer Romer is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Englewood, Colorado
Posts: 6,953
Default

Quote:
Originally Posted by DaveInDenver View Post
Those hygrometers tell you the ratio of coolant-to-water in your mix. The more coolant you have the higher the specific gravity and the higher the float (or floating balls of varying density).

BTW, Jeff, you realize that the specific gravity of anti-freeze is not linear and actually above 70% concentration with water starts to go down? Yeah, at 70% the specific gravity of propylene glycol + water has the same specific gravity as 35%. You really need to judge the accuracy of your tester with your own brain because if it seems odd it might just be odd.

Thanks. That's good to know
__________________
Ken Romer - K0ROM
04 UZJ100
11 RX350
02 Kimberley Kamper
09 BMW Z4 sDrive30i
Reply With Quote
Reply

Thread Tools

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


All times are GMT -6. The time now is 10:27 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.