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  #1  
Old 06-22-2008, 10:09 AM
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Oil pressure readings, '88 300E

Hi,
My OP always stays pretty much dimed (at 3) when I'm moving forward, particularly with acceleration.

When at a stop, it ranges between 1 and 2.

What cause differences in the OP when at idle? Normally it seems higher at idle before the car's warmed up--is this due to the oil being thicker at that time?

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  #2  
Old 06-22-2008, 10:59 AM
JimFreeh's Avatar
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Quote:
Originally Posted by Colo Springs E View Post
Hi,
My OP always stays pretty much dimed (at 3) when I'm moving forward, particularly with acceleration.

When at a stop, it ranges between 1 and 2.

What cause differences in the OP when at idle? Normally it seems higher at idle before the car's warmed up--is this due to the oil being thicker at that time?

That's exactly what you should expect to see.

Jim
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  #3  
Old 06-22-2008, 02:20 PM
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And yes, it is higher when the oil is cold and thick and the engine parts are not warm and expanded.

Tom W
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Old 06-22-2008, 07:11 PM
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Thanks guys....

.....did I mention I love my 300E!?

This is by far my favorite car I've ever owned. It puts a smile on my face to drive it, and I love always getting comments from people:

"Cool old Merc man!"

"Nice 300-what year is that?"

"Man, nice Benz dude!"

Love it!!
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  #5  
Old 07-27-2008, 07:37 PM
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mine does the exact same. I've had 3 older mercedes and they all read that way. if it did anything else i would be shocked
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  #6  
Old 07-30-2008, 01:45 AM
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I'm not sure if it's the same as with the diesels, but Mercedes states that anything over .5 bar (7.5psi) on idle is acceptable. It must rise and stay at 3 bar (45psi) while driving on the highway. Sounds like yours is good and healthy!

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