Bus Coolant SCA 8V92

[dickegler]

Hi all,

tested my coolant sca level in the bus.  Nitrites ok, ph was off the chart.  I have 2 coolant filters I just replaced.  Anti-freeze protection -35 degrees

With the ph that high, do I treat it, or drain, flush, and refill?

Will the coolant treatment filters correct the ph, or not.  Is there a treatment for ph?

Thanks

Dick Egler

[makemineatwostroke]

Nalcool make a product for that I'll look and see if I can find the number for you

[JohnEd]

Heat accelerates chemical action.  In this case that would be the disolving of your radiator.  Maybe it is OK tolet it sit in that condition for awhile but I sure wouldn't run it like that.  Neutralizing PH is kid stuff.  Call a rad shop for the appropriate product.  And let us know.

What kind of kit did you use to test the coolant?

Thanks,

John

[dickegler]

John,

I used the test strips from Wix filters.  The nitrate level is fine, but ph was 11, and said immediate attention required.

thanks  dick egler

[HB of CJ]

What's normal pH for a healthy cooling system?  I thought around 9 or 10 was desired.  Combustion products are very acid.  Could pH be lower for a Two-stroke Detroit?  Dunno.  Great Board! 

[luvrbus]

Dick, 7 pH is neutral most antifreeze is 10.5 (8-9 is good for 2 strokes) you may have to much antifreeze to lower it  anytime you go to anything over a 50/50 mix the pH is going to be high the only way I could lower mine was with distilled water DD recommends this for the 60s  good luck