After a bit of a delay I'm back at it.
Been too busy to work on or even drive the bus.
I'm getting ready to change the coolant in the auction bus I bought 6months ago.
I've been reading up on coolants and it sounds like I need one that meets ATSM D-6210.
I found one, at the local napa or o'reiley store.
Its "Peak final global extra life". Its got all the right words,
<https://www.peakhd.com/wp-content/uploads/img_upload/Final%20Charge%20%20Red_Spec%20Sheet_hires.pdf?x38 462>
The only thing that got my attention was that it was an organic acid technology.
It says I can mix it with the "green" stuff but only to a 25% contamination level.
I'm planning on replacing as much of the fluid as I can.
The manual say this engine, 7.3, has an initial fill capacity of 31.2 qts, thats 8 gallons.
If I get atleast 6 gals out I should be OK.
I guess if I get less than the 6 gal out; I could fill with water, circulate it with the engine to dilute it and then drain again. I'll have to do some high school math to see
how often I have to repeat to get it below 25%
Its been a while.
Does anyone know anything about it, is it any good and is my plan sound?