Low oil pressure

10

Asked by Oct 28, 2013 at 11:38 PM about the 1994 Chevrolet Suburban C1500

Question type: Maintenance & Repair

My gauge is reading low oil pressure with a full tank of oil. It only drops when idling or
coasting. It has 181k miles on it.

2 Answers

6,845

What viscosity of oil are you using ? I would recommend that at 181K miles you use 15W40 at a minimum. At both idle and coasting you are allowing the engine to lower the RPM's which would lower the oil pressure anyways. As the engine has aged the tight tolerances have loosened up creating gaps that a thin (5W30) oil can not fill and you will see a lower pressure as well. You should be slowly increasing the viscosity levels from original manufacturer recommendations as you put more miles on the vehicle.

2 out of 2 people think this is helpful.
10

Sorry for not getting back sooner. I have been using 10W30, and I have checked the oil levels and they'er fine. There is a knocking once the gauge says zero and it idles for a minute.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Low oil pressure light 1 answer

    A month after buying my 2008 surban the low oil pressure light came on had it checked out the oil pump was good changed the sensor and the light is still on

    2008 Chevrolet Suburban LT1 1500 4WD

    -

    Maintenance & Repair

  • Low oil pressure 2 answers

    I own a 2008 chevy suburban Z71 5.3 flex fuel 140k using 5/30w oil. I have replaced the oil pressure sensor twice and sensor filter and have recently replaced the oil pump. One day after the pump wa...

    2008 Chevrolet Suburban LT1 1500

    -

    Maintenance & Repair

  • Low Oil Pressure 2004 Suburban 4 answers

    I need help!!! I replaced the oil sending unit twice! 1 from auto zone and 1 from GMC. Still reading low, added Lucas Oil stabilizer still reading low, did go up some with Lucas. Runs great, just w...

    2004 Chevrolet Suburban 1500 Z71 4WD

    -

    Maintenance & Repair

  • Low oil pressure on 2007 Suburban. 2 answers

    2007 Suburban. 100k miles, but only driven about 4k miles in the last year. No oil leaks on garage, and doesn't burn oil. Runs great. No noises or anything. Checked yesterday and needed 5 quarts...

    2007 Chevrolet Suburban LS 1500

    -

    Maintenance & Repair

  • Oil pressure low 1 answer

    I just filled up my engine a couple days ago and it's back to saying oil pressure low. Why is that?

    2011 Chevrolet Impala LT

    -

    Maintenance & Repair

Search Chevrolet Suburban Questions

Chevrolet Suburban Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 950
#2 Eric Fritz
Eric Fritz
Reputation 860
#3 Neal Turner
Neal Turner
Reputation 830
View All

Related Models For Sale

Used Chevrolet Tahoe
581 Great Deals out of 27,619 listings starting at $1,500
Used GMC Yukon
372 Great Deals out of 17,282 listings starting at $2,500
Used Ford F-150
2,259 Great Deals out of 209,447 listings starting at $1,499
Used GMC Suburban
132 listings starting at $3,500

Used Cars For Sale

2017 Chevrolet Suburban For Sale
8 Great Deals out of 8,123 listings starting at $38,501
2016 Chevrolet Suburban For Sale
35 Great Deals out of 2,190 listings starting at $36,900
2015 Chevrolet Suburban For Sale
36 Great Deals out of 1,230 listings starting at $24,995
2014 Chevrolet Suburban For Sale
19 Great Deals out of 561 listings starting at $19,900
2013 Chevrolet Suburban For Sale
34 Great Deals out of 767 listings starting at $10,895