Separate names with a comma.
They make Zinc additives that can be added to any oil, I use it in my 396 all the time.
Talking to my sister today that works in a school were they are not allowed to carry pepper spray in the school.
She said they all carry Wasp...
On my previous boat that hose went to a freshwater flush on top of the motor.
Follow the hose to see if it goes there.