Originally Posted by bsloop
OP answer - it will usually take 4-5 gal to have it spiting out the exhaust.
You did fail to run it up to temp before adding the AF but it appears the solution got everywhere it needed to for a standard raw water cooled motor.
Put her to bed and dream of Spring......
Thanks. I don't see how running it up to temp will help distribution of fluid. The cold RV fluid will eventually close the t-stat. Also, I had the t-stat housing off and there is a bypass hole which dumps in intake and exhaust manifolds. The RV fluids that gushed out when I pulled the temp sending unit kind of proves this theory.
I'll take your advice and dream of spring