25w50
#31
Registered
Joined: Aug 2010
Posts: 353
Likes: 0
From: WI
Don't kill the messenger for the fuel adds. There is one on the market that is straight ethanol and they use to market very heavily on the marine side. Yamaha branded fuel adds all went to non alcohol base products for the fuel systems. It has been known for the last 20 years that many fuel adds for the marine side was mostly alcohol based.
#32
Registered

Joined: Jan 2006
Posts: 3,599
Likes: 1,168
From: taxachusetts
You use Mobil 1 Vtwin - it is loaded hard with phosphorus and zinc. It is also designed for engines (Harley of course) that are air cooled and thus encounter major oil temps.
Go to the bottom of: https://mobiloil.com/~/media/amer/us...pecs-guide.pdf
Go to the bottom of: https://mobiloil.com/~/media/amer/us...pecs-guide.pdf



