Should I use 5W30 on an 87 Pontiac Grand Prix Brougham V6 engine?

Asked by PaulTG Jun 05, 2014 at 03:27 PM about the 1987 Pontiac Grand Prix Brougham

Question type: General

Car has just over 120,000 miles on it. I was thinking of synthetic high mileage oil. Is it a waste of money with no real difference?

2 Answers
25,325

chassy answered 9 years ago

I switched to 10w30 full synthetic on every car I've owned since as far back as I first read a report about it. It (I swear) has lasted longer between oil changes still looking like new. Lot of guys I asked said why go to 5 as it's only 5 until the engine warms up a tad.( viscosity increases with engine temp)

1 people found this helpful.
Mark helpful
18,265

munron answered 9 years ago

Agree. Go to synthetic and then double your oil change intervals. Changing the filter once between oil changes might be a good idea, but changing the oil sooner is just wasting money.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3 nationwide Grand Prix listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Pontiac Grand Prix Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,150
  • #2
    james sparrow
    Reputation
    7,480
  • #3
    Dorian Hendricks
    Reputation
    6,030
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Pontiac Bonneville
1 listing
Used Pontiac Firebird
18 listings
Used Chevrolet Monte Carlo
7 listings starting at $9,800
Used Pontiac Grand Am
2 listings
Used Chevrolet Corvette
27 Great Deals out of 782 listings starting at $15,900
Used Chevrolet Camaro
17 Great Deals out of 467 listings starting at $11,999
Used Ford Mustang
34 Great Deals out of 1,596 listings starting at $7,999
Used Dodge Charger
42 Great Deals out of 858 listings starting at $5,995
Used Buick Regal
20 listings starting at $6,395

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.