Hi,

I just installed new XR drives w/ IMCO lowers (built by Mr. Gadgets). My oil temps come up to about 180 when my water temp is around 155 to 160. After running this way for 2 or 3 minutes, my oil temps will drop to about 160 as well and will stay this way until I drop off plane and idle at which time my oil temp will go back up to 180 or so and my water temps will drop a few degrees.

What do you guys see w/ the HP500 EFI oil temps? I'm wondering if I might be moving too much water through the system once the boat is on plane.

Thanks,
Garrett

Sounds like you need thermostats on the coolers ..... bet you up north ?

Nope, Arizona. Water temp was probably 80+ degrees when I tested.

Garrett

it needs to be ~ 190* ...you can have condensation issues ... seems the water temp is being regulated with the thermostat ....I would think a oil stat is needed ....I guess you could go to smaller coolers but that would be a step back ......m

Is this after a hard run or just a nice cruise?
On mine I rarely see the oil temp get over 180*. This always made me wonder if the temp sensor was after the oil cooler.

I think your fine. I wouldn't get excited until the oil temp is over 240 or you have white stuff (moisture) in your breathers (valve covers).

On extended long runs at or near full throttle, the temp will come up to 190 -200 range. On a really long run it was getting close to 210 at nearly full throttle and I dropped teh speed by 5 mph and it came down a little. Light cruise it will always come down to about the same as water temp. There is never any condensation in the oil. I think I'll call it good for the time being.