Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

oil

Thread Tools
 
Search this Thread
 
Old Nov 25, 2020 | 01:22 PM
  #1  
namvet6869's Avatar
namvet6869
Thread Starter
Racer
Supporting Member
15 Year Member
Veteran: Air Force
Liked
Loved
 
Joined: Oct 2007
Posts: 431
Likes: 22
From: Chester Illinois
Default oil

Will a little heavier oil raise oil pressure. On hot day mine runs around 35 highway speed and 20 at idle. 2000 with 90000 miles

Last edited by namvet6869; Nov 25, 2020 at 01:24 PM.
Reply
Old Nov 25, 2020 | 01:26 PM
  #2  
Stingroo's Avatar
Stingroo
Safety Car
Liked
Loved
Community Favorite
 
Joined: Jan 2019
Posts: 4,308
Likes: 3,455
From: Somewhere, Florida
St. Jude Donor '20-'21-'22-'23-'24
Default

Those pressures are within spec. Heavier oil will raise pressure to a degree, but that doesn't fix any underlying problems you may or may not have.
Reply
Old Nov 25, 2020 | 01:33 PM
  #3  
Beast's Avatar
Beast
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2004
Posts: 1,654
Likes: 673
From: Pingree Grove IL
Default

I use mobile 1 10-30, why? I don’t know. I guess it’s just a preference. Thinner weights just seem like water to me. Cars are getting 300,000 miles on thin oil. I use 5-20 in my fusion sport and it’s fine.
Reply
Old Nov 25, 2020 | 01:51 PM
  #4  
MWWarlord's Avatar
MWWarlord
Le Mans Master
Supporting Lifetime Gold
Community Builder
Photoriffic
Community Favorite
Top Answer: 5
 
Joined: Dec 2017
Posts: 5,560
Likes: 3,302
From: Virginia
2021 C5 of the Year Finalist - Modified
St. Jude Donor '21-'22
Default

I've never had any issues running Mobil 1 5w-30. As long as you're within spec, why would you change?
Reply
Old Nov 25, 2020 | 08:35 PM
  #5  
redzg's Avatar
redzg
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Mar 2017
Posts: 3,762
Likes: 937
From: Orlando Florida
Default

I'm running 10-30 Mobil One on this fill. Pressure may have gone up one or two psi at idle once up to full temp.
Reply
Old Nov 26, 2020 | 11:58 AM
  #6  
choyt's Avatar
choyt
Instructor
Supporting Lifetime
10 Year Member
Liked
Loved
 
Joined: Nov 2013
Posts: 187
Likes: 13
From: Port Ewen New York
Default

5/30 mobil 1 in the vette and 0/20 in the 15 silverado now that oil really is like water !!! I really don't know why GM put that oil in the truck.
Reply
Old Nov 26, 2020 | 12:00 PM
  #7  
Stingroo's Avatar
Stingroo
Safety Car
Liked
Loved
Community Favorite
 
Joined: Jan 2019
Posts: 4,308
Likes: 3,455
From: Somewhere, Florida
St. Jude Donor '20-'21-'22-'23-'24
Default

Originally Posted by choyt
5/30 mobil 1 in the vette and 0/20 in the 15 silverado now that oil really is like water !!! I really don't know why GM put that oil in the truck.
CAFE standards and fuel economy. It's what the gen5 engines are designed to run on. It'll be fine.
Reply

Get notified of new replies

To oil





All times are GMT -4. The time now is 06:19 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE