97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic Atta

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Patriotsix

NAXJA Forum User

Location

Jacksonville MC / Demorest GA

• Dec 13, 2016

• #1

97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic Atta

Is this normal for a 97 4.0 with 190k miles and 10w40 with Lucas added?

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9

90xj06

NAXJA Forum User

Location

Peabody, MA

• Dec 13, 2016

• #2

Re: 97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic

the dash guage is not 100% accurate but that's about where my 90 sits with 270k on it.
once it warms up it always seems to go back to the same place for me.

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Dec 13, 2016

• #3

Re: 97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic

10-20 psi at warm idle is normal and common.

 

P

Patriotsix

NAXJA Forum User

Location

Jacksonville MC / Demorest GA

• Dec 13, 2016

• #4

Re: 97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic

I also just replaced the Temp Sending Unit but okay I was just curious thanks

 

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metrohick

NAXJA Forum User

Location

Long Island, NY

• Dec 14, 2016

• #5

Re: 97 XJ 4.0 Oil Pressure with 10w40 & Lucas at warm Idle. Is this normal? (See Pic

Try changing the oil pressure sensor. Its not expensive and it backs out with a 1 1/8 socket. I got like 10 more pounds after swapping mine out. The Lucas has to mix with everything for a while too.