livnrdream
New Member
Purchased a 2003 260da with 350 mag BIII past spring, it had 290 hours on it. Running in fresh water Lake Erie. I have been watching gauges fairly closely. My engine temp after warm up stays steady at around 190 deg F and the oil pressure is around 40 psig under load 3600-4000 rpm and drops to around 15 psig on idle after a run. Are these typical type numbers for this engine. The engine does not use any oil, clean on the stick. I have put about 15 hours on the motor since purchase. My previous boat had a 350 - 260 hp Merc Alpha 1 and ran at much lower 160 deg F water temp and higher 60 psig oil pressures, it had 450 hours on it.