New member
Drifting
Joined: Nov 2007
Posts: 1,716
Likes: 280
From: New York
If 50 members reply, you will have 50 opinions.
Try here:
Motor Oil "Wear Test" and "Lab Test" Data - CorvetteForum - Chevrolet Corvette Forum Discussion
List of Flat-Tappet Oils - CorvetteForum - Chevrolet Corvette Forum Discussion
Try here:
Motor Oil "Wear Test" and "Lab Test" Data - CorvetteForum - Chevrolet Corvette Forum Discussion
List of Flat-Tappet Oils - CorvetteForum - Chevrolet Corvette Forum Discussion
Race Director
Joined: Nov 2006
Posts: 13,229
Likes: 7,825
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Welcome to our forum. As stated above. Everyone has a opinion on oil. There have been countless threads on the subject. Many very, very long ones.
I would suggest you look for a oil formulated for older cars with a fairly high level of ZDDP , zinc for your vintage flat tappet cam.
As per weight, that really depends on your climate.
Some run as thin as 10W-30. I run 20W-50.
You will run what is correct in your climate I would think.
I use Genuine AC Delco filters. Others have there favorites .
drain the oil out the bottom, put the new stuff in the top.
I would suggest you look for a oil formulated for older cars with a fairly high level of ZDDP , zinc for your vintage flat tappet cam.
As per weight, that really depends on your climate.
Some run as thin as 10W-30. I run 20W-50.
You will run what is correct in your climate I would think.
I use Genuine AC Delco filters. Others have there favorites .
drain the oil out the bottom, put the new stuff in the top.
Drifting
Joined: Aug 2016
Posts: 1,794
Likes: 936
From: Arizona
Welcome to our forum. As stated above. Everyone has a opinion on oil. There have been countless threads on the subject. Many very, very long ones.
I would suggest you look for a oil formulated for older cars with a fairly high level of ZDDP , zinc for your vintage flat tappet cam.
As per weight, that really depends on your climate.
Some run as thin as 10W-30. I run 20W-50.
You will run what is correct in your climate I would think.
I use Genuine AC Delco filters. Others have there favorites .
drain the oil out the bottom, put the new stuff in the top.
I would suggest you look for a oil formulated for older cars with a fairly high level of ZDDP , zinc for your vintage flat tappet cam.
As per weight, that really depends on your climate.
Some run as thin as 10W-30. I run 20W-50.
You will run what is correct in your climate I would think.
I use Genuine AC Delco filters. Others have there favorites .
drain the oil out the bottom, put the new stuff in the top.
Le Mans Master
Joined: Jan 2007
Posts: 8,000
Likes: 3,339
From: Omaha NE
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2022 C3 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
I bought my '76 new & I've only used Valvoline & AC filters from day one.
Ran 20W-50 racing until Maxlife came out. Switched to 10W-40 around 60k...
Ran 20W-50 racing until Maxlife came out. Switched to 10W-40 around 60k...
