First of all, RIP Don S. you helped me through many sleepless nights, thank you for your help and wisdom. 
I have a brand new long-block Volvo Penta 3.0GS with a new exhaust manifold (water pump, carb, starter, alternator are off of old blown motor).
I put the new motor in the boat, ran it for 10 hours following manufacturer's specs exactly (low RPM's varying speeds, etc.). I really babied this thing. She ran like a top the whole time between 150 and 175 degrees. I kept my eye on the temp sensor constantly as the old motor blew due to an overheat. Never went over 175.
After 10 hours, I changed the oil and oil filter (the oil I took out looked normal) and took her out on the river for about 5 hours. I opened her up for a couple minutes a few times but mostly kept at no wake speed. Never went over 175 degrees. I checked the oil the next day and it looked like a dirty vanilla shake!! It doesn't seem like much additional liquid is in the motor as the dipstick is still right at the "full" line like when I changed the oil.
I am at my wits end! I have NO idea what could have happened. My pocketbook and sanity can't take another blown motor!
Any ideas what it could be?
I have one (desperate) hope that maybe some water came in somehow when I washed the boat after changing the oil as a lot of water got in the bilge. Seems weird that the oil is that discolored though. Anyone have any thoughts? Thanks for any help!
I have a brand new long-block Volvo Penta 3.0GS with a new exhaust manifold (water pump, carb, starter, alternator are off of old blown motor).
I put the new motor in the boat, ran it for 10 hours following manufacturer's specs exactly (low RPM's varying speeds, etc.). I really babied this thing. She ran like a top the whole time between 150 and 175 degrees. I kept my eye on the temp sensor constantly as the old motor blew due to an overheat. Never went over 175.
After 10 hours, I changed the oil and oil filter (the oil I took out looked normal) and took her out on the river for about 5 hours. I opened her up for a couple minutes a few times but mostly kept at no wake speed. Never went over 175 degrees. I checked the oil the next day and it looked like a dirty vanilla shake!! It doesn't seem like much additional liquid is in the motor as the dipstick is still right at the "full" line like when I changed the oil.
I am at my wits end! I have NO idea what could have happened. My pocketbook and sanity can't take another blown motor!
Any ideas what it could be?
I have one (desperate) hope that maybe some water came in somehow when I washed the boat after changing the oil as a lot of water got in the bilge. Seems weird that the oil is that discolored though. Anyone have any thoughts? Thanks for any help!
