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  #1  
Old 04-24-2009, 12:19 PM
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Join Date: Dec 2005
Posts: 2,423
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.

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  #2  
Old 04-24-2009, 12:31 PM
lietuviai's Avatar
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Join Date: Mar 2003
Location: SW WA
Posts: 5,744
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.
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84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012
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  #3  
Old 04-24-2009, 01:00 PM
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Join Date: Apr 2005
Location: Austin, TX
Posts: 631
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....
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'82 300D Petrol B-G Metallic
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  #4  
Old 04-24-2009, 01:24 PM
compu_85's Avatar
Cruisin on Electric Ave.
 
Join Date: May 2008
Location: La Conner, WA
Posts: 5,234
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
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Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
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  #5  
Old 04-24-2009, 01:43 PM
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Location: Carson City, NV
Posts: 3,850
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.
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83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
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  #6  
Old 04-24-2009, 01:58 PM
2.5Turbo's Avatar
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Location: Tacoma, WA
Posts: 900
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.
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1990 300D 2.5 Turbo -155k
2000 E430 - 103k
2014 Jeep Grand Cherokee Ecodiesel 4x4 - 11k
2014 VW Passat TDI SE - 7k Bro's Diesel
2006 E320 CDI - 128k Pop's Benz


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  #7  
Old 04-24-2009, 02:25 PM
Alastair's Avatar
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Join Date: Mar 2002
Location: South Wales U.K.
Posts: 1,064
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.
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Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....
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  #8  
Old 04-24-2009, 03:19 PM
pawoSD's Avatar
Dieselsüchtiger
 
Join Date: Oct 2004
Location: Grand Rapids, MI
Posts: 15,438
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
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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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  #9  
Old 04-24-2009, 03:56 PM
rcounts's Avatar
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Join Date: Mar 2008
Location: Kent, WA
Posts: 1,189
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...
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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown

Last edited by rcounts; 04-30-2009 at 01:51 AM.
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  #10  
Old 04-24-2009, 04:56 PM
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Join Date: Jun 2008
Location: Carlisle, MA
Posts: 1,225
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.
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1989 Subaru GL Wagon 5-speed Touring Edition
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  #11  
Old 04-24-2009, 05:03 PM
Inna-propriate-da-vida
 
Join Date: May 2008
Posts: 1,969
1983 300sd
284000 miles
3.0 bar at start
~2.0 bar at warm idle
3.0 bar with almost any throttle input
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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST

1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000

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  #12  
Old 04-26-2009, 01:15 AM
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Join Date: Sep 2007
Posts: 322
1981 300D
225K on engine
3 bar at start up
1.75 @ idle warm engine
3 bar above idle

15w40< external temp 80 degrees
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1982 300D Turbo 231K 120hp? 28.1mpg YTD


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  #13  
Old 04-26-2009, 01:36 AM
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Join Date: Jan 2001
Location: Alexandria, Virginia
Posts: 5,480
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
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Last edited by Mark DiSilvestro; 04-26-2009 at 01:44 AM.
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  #14  
Old 04-26-2009, 01:48 AM
BodhiBenz1987's Avatar
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Join Date: Dec 2004
Location: East Coast
Posts: 3,005
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.
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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)
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  #15  
Old 04-26-2009, 01:50 AM
mgburg's Avatar
"Illegal" 3rd Dist. Rep.
 
Join Date: May 2006
Location: Onalaska, WI.
Posts: 221
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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.
M. G. Burg
'10 - Dakota SXT - Daily Ride / ≈ 172.5K
.'76 - 450SLC - 107.024.12 / < .89.20 K
..'77 - 280E - 123.033.12 / > 128.20 K
...'67 - El Camino - 283ci / > 207.00 K
....'75 - Yamaha - 650XS / < 21.00 K
.....'87 - G20 Sportvan / > 206.00 K
......'85 - 4WINNS 160 I.O. / 140hp
.......'74 - Honda CT70 / Real 125

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