1991 Cherolet work truck 4.3 L V6 engine Best motor oil weight?

Asked by Jul 01, 2017 at 05:25 PM about the 1991 Chevrolet C/K 1500 Standard Cab SB

Question type: Maintenance & Repair

I have been using 10-30 but the truck runs slightly rougher the past couple of
years. Interested in recommendations for the best motor oil weight. Original
engine, love this truck.

3 Answers

74,515

The oil weight has nothing to do with rough running, just change it every 3,000 miles. Try tuning it up.

1 of 1 people found this helpful.

I probably shouldn't have mentioned rough running. It is very slight. I am a stickler about changing the oil, which is probably why the truck is doing so well at 26.5 years. I would still like to hear about other people's experiences with oil weight. As far as a tune-up, I plan to it when it is due. Maybe a little sooner.

74,515

If the engine is not using oil I would stick with what you are using. If it is you could try 10W-40.

1 of 1 people found this helpful.

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 892 nationwide C/K 1500 listings starting at $3,195.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,550
  • #2
    John Saffrahn
    Reputation
    2,550
  • #3
    Rowefast
    Reputation
    2,150
View All

Related Models For Sale

Used GMC Sierra 1500
782 Great Deals out of 67,756 listings starting at $1,350
Used Ford F-150
2,131 Great Deals out of 181,877 listings starting at $1,000
Used Chevrolet C/K 2500
202 listings starting at $6,499
Used Chevrolet Camaro
398 Great Deals out of 31,729 listings starting at $2,395
Used Chevrolet S-10
7 Great Deals out of 1,282 listings starting at $1,800
Used Chevrolet C/K 3500
232 listings starting at $4,995

Used Cars For Sale

1998 Chevrolet C/K 1500 For Sale
173 listings starting at $3,195

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.