Newbie question 1: Recommended oil viscosity
08-24-2010, 08:56 PM
#1
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Aug 2010
Location: San Marcos, CA
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
Newbie question 1: Recommended oil viscosity Being completely new to LS1s and my car not coming with a factory owners manual, what is the recommended oil viscosity on a 2000 LS1? I know some of these newer motors use some pretty light weight stuff and I don't want to risk bearing damage by running something too thick.
Also, how many are running synthetic? I usually run Mobil 1 on my cars but sometimes stock seals aren't up to snuff for that stuff. Currently it leaks none that I'm aware of and I'd like to keep it that way...
Also, how many are running synthetic? I usually run Mobil 1 on my cars but sometimes stock seals aren't up to snuff for that stuff. Currently it leaks none that I'm aware of and I'd like to keep it that way...
08-24-2010, 11:16 PM
#5
TECH Apprentice
iTrader: (3)
Join Date: Jul 2006
Location: Grayson,ga.
Posts: 334
Likes: 0
Received 0 Likes
on
0 Posts
I've used M1 in all my vehicles with no leaks,09 Acadia,02 WS6,91,T/A,etc,etc.I even started using it in one of my work vans(99 3500 Express) that had 113k on it 6 years ago,and it hasn't leaked a drop to this day.
Have used M1 in my 91 T/A since the 90's and no problems either.It's my son's car now and still no issues.
Have used M1 in my 91 T/A since the 90's and no problems either.It's my son's car now and still no issues.
08-24-2010, 11:23 PM
#6
LS1Tech Administrator
iTrader: (3)
Join Date: Nov 2001
Location: Schiller Park, IL Member: #317
Posts: 32,033
Likes: 0
Received 1,484 Likes
on
1,068 Posts
The manual recommends 5w30, or 10w30 under certain weather conditions.
You can also use 0w30 and 0w40. I use M1 0w40, been doing so for many years now without issues. LS1s tend to like an oil that's on the thick side of a 30 weight, or the thin side of a 40 weight. Many oil test results over the years have shown this.
You can also use 0w30 and 0w40. I use M1 0w40, been doing so for many years now without issues. LS1s tend to like an oil that's on the thick side of a 30 weight, or the thin side of a 40 weight. Many oil test results over the years have shown this.
Trending Topics
08-25-2010, 01:11 PM
#13
TECH Resident
iTrader: (6)
Join Date: Jan 2005
Location: Whorelando, FL
Posts: 833
Likes: 0
Received 0 Likes
on
0 Posts
10w30 here, sometimes 5w30 if I cant find the 10. Always a full synthetic, whatever brand is cheapest that day, with a Wix filter and I change my oil at about 5,000 miles.
