Oil Question
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Oil Question
I'm getting ready to change the oil for the first time in my 78, I am looking for advise on what kind and what weight to use.. It is a 78 with L82 motor, auto trans... with headers,,42000 miles .. It will be driven in warm weather mostly.. Thanks for your help ..
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Instructor
Joined: Aug 2011
Posts: 249
Likes: 7
From: Wentworth North Carolina
FWIW
I like this oil. http://www.castrol.com/castrol/gener...tentId=7032644
easily available and high zinc.
Race Director
Joined: May 2006
Posts: 18,703
Likes: 2,572
this is the highly debated thread, I use 10W30 Valvoline VR1 but only drive about 1k per year.
http://forums.corvetteforum.com/c3-t...test-data.html
http://forums.corvetteforum.com/c3-t...test-data.html
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Melting Slicks
Joined: Aug 2010
Posts: 2,207
Likes: 26
From: Ocean County NJ
I have a 68 rebuilt, high performance engine setup. I also have a stock 73 and use Valvoline VR1 20W-50 in both. As Brian said, everyone has a different and emotional, loyal and strong preference to their oils. If you search and read the threads on this topic, you will not come away with one brand and viscosity. I chose my oil based on a Corvette experts opinion and that was good enough for me and have 0 complaints. I tried synthetic oil once and will never go back, as it leaked all over the place. I like a thicker oil in these old cars.
Melting Slicks
Joined: Oct 2011
Posts: 3,453
Likes: 67
From: Midland Ontario
NCM Sinkhole Donor
GM recommended everything from 5w30 to 20w50. That's not as important as realizing that zinc levels have changed since your '78 was built. Therefore the arguement that develops is how much zinc you need in your oil for your original flat tappet cam engine. As mentioned, read the sticky if you like and maybe that will help you understand people's choices.
