ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 General Postings

View Poll Results: Which oil do you use?
Amsoil 79 22.13%
Castrol 19 5.32%
Champion 0 0%
Chevron 0 0%
Conoco 0 0%
Citgo 0 0%
Havoline 1 0.28%
Interstate 0 0%
Kendall 1 0.28%
Lowe 0 0%
Marathon 0 0%
Mobil 1 224 62.75%
Motorcraft 0 0%
National 0 0%
PennZoil 4 1.12%
Quaker State 3 0.84%
Redline 10 2.80%
Royal Purple 11 3.08%
Valvoline 5 1.40%
Voters: 357. You may not vote on this poll

Reply
 
Thread Tools Display Modes
Old 04-12-2016   #141
Mystic ZR-1
 
Mystic ZR-1's Avatar
 
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,635
Default Re: Which oil do you use

Why is 10w40 so popular?
GM said 10w30.
Ya know, they're really smarter than we give
them credit for...
Mystic ZR-1 is offline   Reply With Quote
Old 04-12-2016   #142
rush91
 
Join Date: Feb 2016
Location: Carterville Illinois
Posts: 852
Default Re: Which oil do you use

Quote:
Originally Posted by Mystic ZR-1 View Post
Why is 10w40 so popular?
GM said 10w30.
Ya know, they're really smarter than we give
them credit for...
Good question, one I have wondered as well. The way I understand, GM started using Mobil 5W-30 on 1993 cars and beyond. When I bought my '91, I had no idea what was in it. After most here use 10W-40 Amsoil, I went same route. High Zinc, has all the GM ratings, etc.......Since then, I have noticed a smoother idle, and no " chain rattle" at all. That maybe due to the new AC Delco PF970C oil filter as well. But I hope it will run cooler some what in the summer with the 10W-40 as well. I maybe totally wrong with my conclusion, time will tell.
But also, I would think motor oils now are way better than in the early 90s. But this is an endless conversation, I think it boils down to preference, easy of availabilty, price as well.
rush91 is offline   Reply With Quote
Old 04-18-2016   #143
BigJohn
 
BigJohn's Avatar
 
Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,258
Default Re: Which oil do you use

Quote:
Originally Posted by Mystic ZR-1 View Post
Why is 10w40 so popular?
GM said 10w30.
Ya know, they're really smarter than we give
them credit for...
15w50

BigJohn is offline   Reply With Quote
Old 07-08-2016   #144
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default Re: Which oil do you use

M1 diesel oil... 1200 ppm zinc

Sent from my Nexus 6 using ZR-1 Net Registry mobile app
__________________
1991 White ZRJuan #1616
Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
BigIke is offline   Reply With Quote
Old 07-09-2016   #145
SAM/CH ZR-1
 
Join Date: Jul 2005
Location: Basel/Switzerland
Posts: 152
Default Re: Which oil do you use

At the moment I do test the Valvoline VR1 Racing 10w-60 Premium Synthetic Blend Engine Oil. It also has zinc.
__________________
Sam

DR.Z/LT5-Performance

1990 #1822 with 383 cui
SAM/CH ZR-1 is offline   Reply With Quote
Old 07-11-2016   #146
Billy Mild
 
Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
Default Re: Which oil do you use

Quote:
Originally Posted by SAM/CH ZR-1 View Post
At the moment I do test the Valvoline VR1 Racing 10w-60 Premium Synthetic Blend Engine Oil. It also has zinc.
Make sure to change this often. The racing oil has little to no detergents.
__________________
Looking for a ZR-1
1985 Yamaha RZ350-NOT STOCK
1971 Yamaha AT1-Middle of a restoration
Billy Mild is offline   Reply With Quote
Old 07-11-2016   #147
BigIke
 
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
Default Re: Which oil do you use

I'm thinking about switching to Quaker State ultra, it has the highest wear protection by far

Sent from my Nexus 6 using ZR-1 Net Registry mobile app
__________________
1991 White ZRJuan #1616
Mileage: 56K Sept-14 -- 113k May-18!!!
God Damn I Love This Car!
BigIke is offline   Reply With Quote
Old 08-07-2016   #148
Andreas
 
Join Date: Jul 2016
Location: Norway
Posts: 15
Default Re: Which oil do you use

I have a lot of Kendall GT1 10W30 API SL is there any problem to use this in my 90 ZR1?
Andreas is offline   Reply With Quote
Old 08-08-2016   #149
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Re: Which oil do you use

Quote:
Originally Posted by Andreas View Post
I have a lot of Kendall GT1 10W30 API SL is there any problem to use this in my 90 ZR1?
Some helpful info:

http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf

http://www.drivenracingoil.com/news/...-in-motor-oil/
__________________
Good carz, good food, good friendz = the best of timez!

90 #1202
"FBI" top end ported & relieved
Cam timing by "Pete the Greek"
Sans secondaries
Chip & dyno tuning by Haibeck Automotive
SW headers, X-pipe, MF muffs

Former Secretary, ZR-1 Net Registry
Paul Workman is offline   Reply With Quote
Old 08-16-2016   #150
Billy Mild
 
Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
Default Re: Which oil do you use

http://www.amsoil.com/shop/by-produc...?code=AMOQT-EA

https://www.amazon.com/Mobil-120770-...0+high+mileage

What is the thoughts of running 10w-40 in the Corvette vs. the normal 10w-30? I am worried that the thicker oil will cause issues down the road such as oil pressure or seals busting out? Am I just paranoid or what?
__________________
Looking for a ZR-1
1985 Yamaha RZ350-NOT STOCK
1971 Yamaha AT1-Middle of a restoration
Billy Mild is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020