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Just a warning for those of you who trust your oil temperature gauge in your dash.

I took my IM for a very spirited drive today to check out my new EFI profile.  The oil temperature gauge hit 210 degrees while on the freeway, and cooled down to 180 when I pulled in my garage.  To my surprise, when I pulled the dip stick and inserted my Manley temperature gauge it read 220 degrees!

What the heck!

So, I quickly got out my temperature gun and took a reading on the oil temp sending unit and sump.  Both read in the 215 range. 

That means that the oil temperature gauge in my dash is REALLY out.  I wish I could have inserted the Manley gauge in the dip stick hole when my dash gauge showed 210.  Maybe it's better I didn't.

I plan on ordering another oil temperature gauge tomorrow.

1959 Intermeccanica(Convertible D)

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My new gauge shows 180 when driving and the stock gauge (no scale) has the needle in about the middle to 3/4 range, CHT is about 250.  (2.4S 911 engine)  This seems reasonable to me, but not sure?  When I stop the engine the CHT gauge stays at 250 and the oil temp shoots up to 220.  I assume this is because no air flow nor oil flow...make sense?  Car is running very well, finally.  I drove it around for an hour yesterday and an hour the days before with air temps in the 30's C.  This is the first time in 9 years that I have taken this car on anything more than a drive around the block.  Feels good!

 

Ron, if the gauge reads low can you not just take that into consideration when driving?  Its all relative...if the gauge shows 180 and that is okay operating temp (even though not really 180) then you need to be concerned when it goes up and say shows 200, then you know you're hot.

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