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[T3] synthetic oil and temps and pressures


<x-charset UTF-8>well, don't know if anyone remembers my resurrecting the synthetic oil
debate a couple of months ago, but i made the switch to 10W-30 Mobil 1
full synthetic and have some observations and questions.

when i switched i noticed two things.  first, my VDO oil temp gauge
showed that temps were going up about 20 to 30 degrees higher than
they did with regular oil on a 25 mile freeway commute i used to do. 
the sensor is sensor in the pressure relief hole and while not
completely accurate (who knows), is pretty repeatable.  the gauge used
to always show about 215 degrees during the drive.  the temp crept up
to almost 245 after putting in synthetic, so i reduced rpms to not
risk it.  this is in august in socal, and winter temps are easier on
the setup.

also, the new synthetic was giving lower presures when i got to stop
lights during the drive, like down to about 20 psi where i used to
keep 30 or 40 psi at stoplights when hot.

should i switch to 10W-40 synthetic to maintain pressure?  is there
anything else that would explain the higher oil temps and lower
pressures?  should i worry about the numbers?

the engine is a mild 1776 with stock carbs that's three years old
(with limited use).  when i did my oil change to put in the synthetic
oil, by the way, the oild strainer was clean enough to eat off of, so
i think the full flow filter was/is doing it's job.

thanks, Dan
---------------------------------------------------------
Dan Hoopes
1967 Red Squareback "Stanley"
www.hoopes.net/dan/square/before.html
---------------------------------------------------------

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