What is the proper running engine oil temperature? thanks, Joe

300

Thats hot.

212 minimum 260 hot after hard runs are my goal temps.
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your oil temp should be over 215 ,to cook-off condensation,and the high end should never see 285.mine runs around 245

At least 212* during a normal cruise to burn off any condensation and a max of around 260* after a WOT run. These are good numbers to shoot for.

300* is too hot.

300 is to HOT.

180f on the guage. It will be higher than that where unmeasured and boil off water. This number gives you room for hard long runs without running into 260f which is the highest acceptable for short periods. Starting with a cruise temp of 212f doesn't leave a lot of room for hard running. My .02 on the subject.

BTW my gauge reads about 150f on a long cruise and no more than 180f after a 50 mile hard run. No condensation issues at all although I can tell it is close by.

X2 that is how mine runs, heck after a good long wot run I don't like to see it go over 190f

All the motors we have for the MTI have dry sumps and the most temp I have seen through the whole summer is around 150*.

You also need to take readings from the oil pan where the oil is the hottest.