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splashandburn

03-18-2018 09:16 AM

Oil thermostat

I'm trying to locate the oil thermostat on my 500 EFI's. I see the oil cooler but I can't see anywhere that there would be a thermostat. Can anyone help direct me? Thanks.

getrdunn

03-18-2018 11:54 AM

Isn't it in your oil filter mount on the back of the engine?

BUP	03-18-2018 12:20 PM

MerCruiser Race Engine & Drive 500 EFI Oil Cooler & Oil Filter (Engine) Parts

here easiest way for reference in the link above.

number 13 is the oil t stat and how the whole assembly is installed 12 thru 18

splashandburn

03-18-2018 03:00 PM

Thanks. I can see the cooler but not the housing. Guess it must be buried somewhere back there. Probably have to try to follow the hoses to find it.

Unlimited jd

03-18-2018 04:00 PM

It’s in the adapter that goes to the oil filter pad on the block.

splashandburn

03-20-2018 04:01 PM

Quote:

Originally Posted by Unlimited jd (Post 4616683)

It’s in the adapter that goes to the oil filter pad on the block.

The filters are remotely mounted on the front of the motors. There's nothing on the mounts except an oil temp sensor.

Rookie

03-20-2018 08:46 PM

Double post

Unlimited jd

03-20-2018 09:11 PM

Quote:

Originally Posted by splashandburn (Post 4617055)

The filters are remotely mounted on the front of the motors. There's nothing on the mounts except an oil temp sensor.

take a better look. There’s an adapter where the filter would go if it was on the block. The thermostat is in there.

getrdunn

03-21-2018 08:21 PM

https://cimg4.ibsrv.net/gimg/www.off...1749fac025.png
You find yet. This is a hp 500.

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