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Author Topic: Oil pressure for 2.0  (Read 1567 times)

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Offline LongTimeFordMan

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Oil pressure for 2.0
« on: June 21, 2017, 09:29:41 AM »
What should the oil pressure be for a 73 2.0 engine?

I recently replaced the oil filter on my 73 2.0 with a motocraft FL1.

The engine is factory with 60 k miles on it , doesnt use any oil.

I use Valvoline VR1 20/50 .

With the old filter  the oil pressure was
Cold about 40 psi at idle, 50 or so at 3000 rpm.
Hot 35 ish  at idle and about 55 at 3000 rpm

With the new filter it is
Cold. 50 idle  65 or so at 3000 rpm
Hot 45 idle.    60 or so at 3000 rpm

Everything seems to be oiling well otherwise. And i allow the engine to warm up for a few minutes before driving and keep the revs below about 3000 till it warms up.

I figure that the motorcraft is a more efficient filter but should i be concerned about too much pressure.
Red 1973 pinto wagon DD, SoCal desert car, Factory 4 speed, 3.40 gears, Stock engine, 14" rims and tires, 60 K original miles

Offline dick1172762

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Re: Oil pressure for 2.0
« Reply #1 on: June 21, 2017, 10:50:00 AM »
Why are you using 20/50 oil? That weight of oil is really not necessary except in a race car or one that is wore out, and on its last leg. Look at  http://www.bobistheoilguy.com  to read more about oil than anyone will ever need. This web site is the WORD on oil. Your filter choice is ok but the WIX filters are the very best there is, bar none. BTW I use 10/30 in my Pinto the year around. BTW #2, Valvoline racing oil, while really good stuff, is not made for street cars because the additive package for the street is not necessary and not used. The racing oil is to be changed after each race because of the lack of the additive package.
Its better to be a has-been, than a never was.

Offline robertwwithee

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Re: Oil pressure for 2.0
« Reply #2 on: June 22, 2017, 11:07:10 AM »
What should the oil pressure be for a 73 2.0 engine?

I recently replaced the oil filter on my 73 2.0 with a motocraft FL1.

The engine is factory with 60 k miles on it , doesnt use any oil.

I use Valvoline VR1 20/50 .

With the old filter  the oil pressure was
Cold about 40 psi at idle, 50 or so at 3000 rpm.
Hot 35 ish  at idle and about 55 at 3000 rpm

With the new filter it is
Cold. 50 idle  65 or so at 3000 rpm
Hot 45 idle.    60 or so at 3000 rpm

Everything seems to be oiling well otherwise. And i allow the engine to warm up for a few minutes before driving and keep the revs below about 3000 till it warms up.

I figure that the motorcraft is a more efficient filter but should i be concerned about too much pressure.
I get your numbers exactly on my hot and cold 2.0 for pressure on a new filter.  Wix to be exact. 

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Offline LongTimeFordMan

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Re: Oil pressure for 2.0
« Reply #3 on: June 22, 2017, 06:39:26 PM »
My pressure gauge is fitted to the outlet that the original pressure switch was fitted to, which is located in the driver side of the block between the oil filter and bell housing.

I assume that in this position it measures pressure after the filter.

After driving around in 90 degree weather, engine temp stabilized at about 185.

At this temp, at 1000 rpm pressure was about 40 psi, at 3500 about 60 psi.

I assume that the older filter was just plugged and the new motorcraft is just flowing more oil.

As i mentioned i have valvoline 20-50 vr1 in it now and will be doing some low speed driving around with the stampede in dea4born so the engine temp may get up to 190-200.

I got some Valvoline MaxLife 10-30 and plan to just use it to top off the VR1 with tha 10-30  until the next change.
Red 1973 pinto wagon DD, SoCal desert car, Factory 4 speed, 3.40 gears, Stock engine, 14" rims and tires, 60 K original miles