Low Oil Pressure

Asked by aliciagree Feb 22, 2019 at 04:19 PM about the 1996 Chevrolet C/K 1500 Silverado Extended Cab 4WD

Question type: Maintenance & Repair

I have a 1996 Chevy K1500 with a 5.7 motor
we just put a new motor(but used with 158k
miles) in it replacing the oil pump brand new.
We noticed that has very low oil pressure. We
thought make the sending unit so we took
that out and replaced it with aftermarket oil
gage still shows the same thing. Idle, park, or
at light stop sign/light it have 5-0 psi oil
pressure showing, driving too speed of 65 it
show no more pressure then 20 psi. There no
noises coming from motor no knocking,
nothing. Runs and sounds great! But only
problem we’re seeing is it shows very low to
no oil pressure.. any suggestions or advice?
We tried 10w-30 motor oil no difference so
we go back to original 5w-30 motor oil and
no difference...

2 Answers
22,255

Gary answered 5 years ago

This would indicate that the main bearings are worn. Excess clearance due to worn bearings (158K miles on an engine will do it) will always have low oil pressure. You could try going with a heavier weight oil. Try 10w40 or maybe even a 15W50 oil. This may help. Other than that, not much you can do unless you replace the main bearings.

11 people found this helpful.
Mark helpful
10

Jawan answered 4 years ago

Seafoam. 1.5oz to every qt. Should help lose sludge

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Low Oil Pressure 2 Answers

    I have a 1996 Chevy K1500 with a 5.7 motor we just put a new motor(but used with 158k miles) in it replacing the oil pump brand new. We noticed that has very low oil pressure. We thought make the ...

    1996 Chevrolet C/K 1500 Silverado Extended Cab 4WD

    -

    Maintenance & Repair

  • Low oil pressure after truck is warm 2 Answers

    New motor new oil pump and new sending unit but still low oil pressure

    1994 Chevrolet C/K 1500 Silverado 4WD

    -

    Maintenance & Repair

  • Oil pressure 2 Answers

    When I start my car my oil pressure was up now when I'm driven and warm up pressure goes to 0 slowly and check cages light come on I had brought a oil sensor 3 months ago can it be out already and...

    1993 Chevrolet C/K 1500

    -

    Maintenance & Repair

  • Oil pressure 1 Answer

    I have a 92 silverado the oil pressure gauge will read 25 to 30 psi when cold after warm when I stop I will read so low the check gauge light comes on once I rev it or take off it goes up to 20 psi...

    1992 Chevrolet C/K 1500 Silverado Extended Cab RWD

    -

    Maintenance & Repair

  • Oil pressure 2 Answers

    I have 99 chevy k1500 suburban i just did a oil chsnge about a month ago and this truck is my daily driver the truck runs beautiful well when i get in the truck today to go to workas soon as i cr...

    Chevrolet C/K 1500

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet C/K 1500 Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    15,950
  • #2
    Rowefast
    Reputation
    9,690
  • #3
    John Saffrahn
    Reputation
    6,500
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
132 Great Deals out of 6,515 listings starting at $3,975
Used Ford F-150
320 Great Deals out of 13,991 listings starting at $1,712
Used Chevrolet C/K 2500
1 listing
Used Chevrolet Tahoe
11 Great Deals out of 891 listings starting at $12,900
Used Dodge RAM 1500
5 Great Deals out of 72 listings starting at $3,000
Used Chevrolet Camaro
14 Great Deals out of 282 listings starting at $5,995
Used Toyota Tacoma
45 Great Deals out of 1,079 listings starting at $9,399
Used Chevrolet S-10
2 listings starting at $12,975

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.