jplob96
Deckhand
I have a 1995 Yanmar 6LYM-UTE engine in my boat with 2600 hours on it. I have been using home heating oil the last six years with a fuel cetane booster additive and bio-bor for algae.On a cold start engine puts out a lot of white smoke and there is some raw fuel coming out the exhaust. After engine runs for about five minutes smoke stops. Is there a difference between home heating oil and off road diesel you get at the marina? Both have red dye. Hope I am not causing any engine damage.