Foam on top of E85 test kit.

Joined
Sep 30, 2021
I just received my test kit for E85. I filled like I was told to by the instructions. After 5 minutes it settled at 80. But it has foam looking stuff on top. What is that foam stuff, and is 80 OK to run. First test ,so in a new to this. TIA.
 

dynoman

Well-Known Member
Joined
Nov 30, 2009
Never had foam , but 80% is fine . Most will not notice a difference down to 65% .
 
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