|
|
|
#1
|
||||
|
||||
Oil Pressure Question
What should be the normal oil pressure reading, at idle, with a warm engine for:
1. A 420SEL (91) 2. A 300TE (89) I am not having a problem with either car. Just curious. Thank you.
__________________
Current Benzes 1989 300TE "Alice" 1990 300CE "Sam Spade" 1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007) 1998 E320 "Orson" 2002 C320 Wagon "Molly Fox" Res non semper sunt quae esse videntur My Gallery Not in this weather! |
#2
|
|||
|
|||
Don't know if your 300TE has the single or dual cam engine.
Mine has the single cam version. Once fully warmed up, the tach reads 1 BAR using conventional 10W/40 oil and either a Hengst/Mann/Mahle-Knecht oil filter. On occassion, it will dip a hair below 1 BAR. |
#3
|
||||
|
||||
I would not be comfortable with a reading of less than .75 bar (in my opinion). My manual states the following:
Idle >= 0.3 bar 3000 rpm >= 3 bar
__________________
Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#4
|
|||
|
|||
Dont worry about low oil pressure. As the oil warms up, the oil exapnds and thins out. In my 99 S420, my oil pressure was around 1 at idle so Mercedes changed the oil pump and sending unit. At startup the oil pressure shoots up but it then slowly decreases as it warms up. I was told it is normal.
Like me, I see you're in So. Cal., using a heavier weight oil will prolong the oil pressure but eventually it will thin out. I have a 300E, and I used 5 bottles of Chevron 20W-50 and 1 bottle of Mobil 1 10W/30 w/ a Mobil filter. During short trips for 15 min, the lowest I read is 2 bar but after traffic of the 101-405, it goes down to 1. If you oil pressure does not jump to 3 during acceleration, then you might have a problem or you need an oil change. Relax |
Bookmarks |
|
|