Earl34Mainship
Senior Member
- Joined
- Oct 19, 2012
- Messages
- 175
- Location
- US
- Vessel Name
- Gone Coastal
- Vessel Make
- 2005 34' Mainship Trawler
Mystery.... I'm changing the coolant in my Yanmar 6LYA-STP 370HP main engine, and I have only getting 3.5 gal of coolant when I drain the system. I flushed the system, and still only get 3.5 gal output. I ran the engine at 2000 rpm in the ICW (not at the dock) and the temp gauge didn't reach 175 degrees. Still only 3.5 gal output. The owner's manual says the coolant system holds 5.28 gal of coolant. I don't want to add 3.5 gal of new coolant and have that mix with 2 gal of old coolant. Any suggestions about completely draining the full 5.28 gal of coolant?