low oil temp
12-15-2018 | 02:13 PM
#1
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From: Spring Hill FL
low oil temp
Running a 31 scarab with twin 454s. When I got the boat the oil temp would climb up and get hot. I removed the cooler and cleaned. It was full of rocks sand and impeller parts. I went ahead and cleaned both engines. Now after cleaning the oil temp is very low. Pressure is fine but temp will hardly show up on the gauge. I know they are right because I can hold the oil filter with my hand. I know its winter here and the water temp is pretty low for florida. Is this going to harm anything?
12-15-2018 | 03:43 PM
#2
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From: IBX
It will eventually start causing milky looking engine oil/cream cheese breathers because the oil isn't getting hot enough to steam off the condensation. I had this problem at one time and ended up adding oil tsats.
BT
BT
12-15-2018 | 04:53 PM
#4
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From: Ft. Worth TX
and do not forget OIls job is also to help cool internal engine parts as well so in return its going to get hot from grabbing heat.
Cold oil does not flow as well - IMO good oil temps 185 to 225 maybe 190 to 220 and it has to reach at some point 212 degrees for a bit to burn off the process of combustion inwhich is water vapor & condensation.
Oils job and related parts also is to flow at the right volumes at the right place at the right times -
Cold oil does not flow as well - IMO good oil temps 185 to 225 maybe 190 to 220 and it has to reach at some point 212 degrees for a bit to burn off the process of combustion inwhich is water vapor & condensation.
Oils job and related parts also is to flow at the right volumes at the right place at the right times -
12-15-2018 | 08:05 PM
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From: NW Michigan
What are you getting for oil temps after hard runs before cooler?
Last edited by getrdunn; 12-15-2018 at 08:09 PM.
12-15-2018 | 08:12 PM
#7
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From: Spring Hill FL
Took it out tonight and after a hard run I was able to get 190 out of one engine. Other engine showed nothing. Felt the oil filters and they where about the same temp so looks like I need to trouble shoot an indicating problem. Pretty simple system I’ll get into that tomorrow. So when the water temp comes up everything should be good.
Rookie it it takes the oil temp right at the oil filter housing so I would say before the cooler.
Rookie it it takes the oil temp right at the oil filter housing so I would say before the cooler.
12-15-2018 | 08:27 PM
#8
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From: Spring Hill FL
Before when it was getting hot it would climb to 280 degrees and if I stayed in the throttle I’m sure it would have kept on going. Now it’s looking like it’s about 190 degrees but I need to fix the indication issue to say for sure. With water temp in the low 60s this is probably right and I don’t boat much in the winter. In the summer when the gulf is in the high 80s I’m betting it will be about right.
12-15-2018 | 09:04 PM
#9
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From: Murrayville Georgia
go buy a laser temp gun. they are pretty cheap and you can shoot each engine to see what they are running and how close to each other they really are. senders go bad all the time and even gauges depending on how old they are and what brand. if the laser gun shows them to be close to each other then all is good other than the sender or gauge.
12-15-2018 | 09:07 PM
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From: Grand Rapids, MI
I use to get around ~170 max on the Scarab with same engines and running 6000+RPM. I Had 2 senders 1 before and 1 after cooler, just toggled between senders. This is so I would know the delta before and after the cooler to see if it is doing it's a job and what the temperature of the oil that is being delivered to the bearings, I don't need t know how hot my oil pan gets. I run 160°F sandwich thermostats. I think it's a pretty sweet simple setup.
