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-   -   SURVEY - Whats your Oil Pressure reading at start up? (http://www.peachparts.com/shopforum/diesel-discussion/251135-survey-whats-your-oil-pressure-reading-start-up.html)

chasinthesun 04-24-2009 12:19 PM

SURVEY - Whats your Oil Pressure reading at start up?
 
Im doing a survey of 3 different readings of your cars oil pressure.
TO START
MAKE
MODEL
YEAR
MILEAGE
#1 )at cold start up
#2 )after 20 minutes of driving, then ,at a stop
#3 ) the car at 30 mph or more after 20 minutes of driving

Designed to make light of your diesels oil pressures health and some recommended remedies that may be needed for follow up service.

Keep em runnin for a long ,long time.

lietuviai 04-24-2009 12:31 PM

1984 300D
148K on engine
3 bar at start up
Slightly above 2 bar at idle after 20 minutes
3 bar running at 30 mph.

techguy512 04-24-2009 01:00 PM

1982 300D
180.5K

Old Gauge (replaced due to leak)
3 bar at start up
1.8 bar at idle after 20 minutes
3 bar if rpm over 1800

New Gauge
3 bar at start up
2.2 bar at idle
3 bar if rpm over 1800

Lesson: quite a bit of variability in the gauges....

compu_85 04-24-2009 01:24 PM

3 bar on startup.
1.2 bar on warm idle
.9 bar when the engine is too warm after a highway drive with a bad fan clutch.

Any application of the throttle moves the gauge to the top.

-Jason

Skippy 04-24-2009 01:43 PM

83 300D 309,000 miles
1. 3 bar
2. 1.5 bar
3. 3 bar at anything over about 1200 rpm

77 240D 228,000

same as above.

2.5Turbo 04-24-2009 01:58 PM

90 300D 2.5T
121K
1. 3+ bar after about a second
2. 1.5ish bar at hot idle, as little as 1.2 after running hard. Fluctuates between 1.5 and 2 bar as oil cooler thermostat opens and closes.
3. 3+ bar at anything over 1500RPM.

Alastair 04-24-2009 02:25 PM

1980 300D
159K on engine
3 bar at start up
Slightly above 2 bar at idle after 1/2 hour @70-80mph
3 bar running at 30 mph, and 3 bar at anything much above idle.

pawoSD 04-24-2009 03:19 PM

1982 300SD - 280k on engine
1. 3+ bar
2. 2.1 bar
3. 1.9 bar
3+ bar above 1100 rpm even when hot

1990 300E - 138k on engine
1. 3+ bar
2. 1.8 bar
3. 1.4 bar
3+ bar at anything above 1300rpm even when hot

Both engines are running Shell Rotella 5w40 Synthetic Diesel Oil

My dad and brother's diesels show about the same pressure behavior as my diesel does

rcounts 04-24-2009 03:56 PM

1984 300CD
Replacement engine - mileage unknown
3 bar at start up
Roughly 2.25 bar at idle after 20 minutes (or how ever long it takes to get above 85*C)
3 bar running at 30 mph.

Mine jumps from 2.25 at idle to 3 bar almost instantly off idle. By the time the engine hits 1000 RPMs it is pegged at 3 bar...

JEBalles 04-24-2009 04:56 PM

1983 240D 4-speed standard
1. 3 bar
2. 1-1.5 bar
3. 3 bar
No tach, but oil pressure hits 3 at anything but idle.

cmbdiesel 04-24-2009 05:03 PM

1983 300sd
284000 miles
3.0 bar at start
~2.0 bar at warm idle
3.0 bar with almost any throttle input

argus445 04-26-2009 01:15 AM

1981 300D
225K on engine
3 bar at start up
1.75 @ idle warm engine
3 bar above idle

15w40< external temp 80 degrees

Mark DiSilvestro 04-26-2009 01:36 AM

1982 240D Automatic -
3 bar at startup.
Min around .9 bar hot idle in D or 1.2 bar hot idle in N.
2.5 - 3 bar hot at 30 mph (depending on gear & rpm)

1981 240D 4-speed -
3 bar at startup.
Around 1.5 - 2 bar hot idle.
3 bar hot at 30 mph.

1984 Euro 300TD 5-speed -
3 bar at startup.
Around 1.8 - 2.2 bar hot idle.
3 bar hot at 30 mph.

Speedometers on all have been repaired or replaced so actuall mileage is unknown, but estimate around 200K.

Happy Motoring, Mark

BodhiBenz1987 04-26-2009 01:48 AM

1987 300D
255,000 miles
1) pinned (3 bar)
2) a little over 2 bar
3) pinned

1978 240D
364,000 miles
1) pinned (45 PSI)
2) a bit over 30 PSI
3) pinned
... this 240 I've only had since January and have only put about 200 miles on it, but those readings have been consistent.

I don't know my Jeep's oil pressure, since it doesn't have real gauges ... plus I assume you meant MBs only.

mgburg 04-26-2009 01:50 AM

280E / 1977 / ≈ 150K

#1 ) @ cold start up: > 45 psi / > 3 bar
#2 )after 20 minutes of driving, then, @ a stop: ≈ 20 psi / ≈ 1.5 bar
#3 ) the car @ 30 mph or more after 20 minutes of driving: > 45 psi / > 3 bar

Using: Mobil 1 - 0W40


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