Dirty Oil, I have a Chevy 350 bored and stroke to 383. The oil get black/dirty looking a few hundred miles after I change it. The engine also runs rich. What would cause this?

Asked by Earle Sep 13, 2016 at 10:52 AM about the 1955 Chevrolet Bel Air Hardtop Sport Coupe RWD

Question type: Maintenance & Repair

1 Answer

189,515

Black oil is normal after a few hundred miles, if it make you feel better go with 5-30W or 10-30W synthetic and a good oil filter, you should be fine...

7 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    T_S_T
    Reputation
    280
  • #2
    Paul
    Reputation
    250
  • #3
    Kelly Mayo
    Reputation
    230
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Corvette
26 Great Deals out of 1,084 listings starting at $15,000
Used Chevrolet 150
1 listing
Used Chevrolet 210
1 listing

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.