Uh-oh!  I just bought 2 gal of "the green stuff!"  Sierra propylene glycol,
phosphate free.  I know of at least one other list member who has some
experience with this product.  You out there?  Wanna weigh in on this?

Dave in KC
85 Westy

Robert Keezer said:

I do believe you should not use the green stuff- all of it has phosphates
and is propylene glycol. I'm just going by the WBX coolant tank warning
label, to only use ethylene glycol based coolants. As long as it says
ethylene glycol phosphate free, it's WBX safe. Even if you want to buy the
blue, a gallon or two still is a lot cheaper than engine repairs.