Out drive oil foaming
 

Running amsoil syn, someone told me that synthetic foams when run hard .mine does and raises 2 inches in the bottle and when sits for a while it settles back down . some one else said its water and its boiling.

What do you think>

Check to make sure your resevoir bottle cap is sealing correctly.

go by NAPA and get so water paste ,paste you put on a stick and dip in to a fuel tank to check for water it blue and turns bright red when water is present even a little water ,if they don;t have it at
napa a tank in ground fuel tank or filling station suppy company willl have it for sure,its killer
try redline gear oil it will not foam in your b-max's:D :D :D :D

Bottle cap is tight,no water from there, whats the diff in red line?

oil,gearlube,it's all voodoo. show me a bravo that blew up because of factory gearlube! anyway,if you want to run synthetic it will foam. when gearlube heats up it expands. it only has a very small area inside the upper gearhousing and after that it has the space in the bottle. the cap must seal or the gearlube would overflow out of the bottle. so,naturally the level will go up when it's hot and down when it's cold. if you want to check for water pull the lower fill plug ahead of the prop after it's cool and you will see discoloration there. water is heavier than oil.

On my Scarab i ran syn in the imco drive and it would foam .changed it to the merc oil and it quit. My Hustler i have allways had syn in it ,I think ill try the water paste thing.

your right on Rob amsoil will foam I don't know why but redline
in my boats as well as merc will not ??? wish I knew why ????

I've been having problems with the merc oil foaming out the breather in my TRS. If I keep it so it just barely touches the stick I'm ok. I was going to switch to the redline synthetic but if it foams also maybe I wont now.

Doug I have never had Red line foam ,but anything is possible
I use it only in the drives and no complaints

Doug I have never had Red line foam ,but anything is possible
I use it only in the drives and no complaints