Topic: Zinc Additive for Oils
in Forum: C3 General Discussion
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Lifetime MemberRod, I would add the GM EOS....................
http://www.gmpartsdirect.com/results.cfm?singlepart=1&partnumber=EOS
corvette440hp
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Leavenworth, KS - USA
Joined: 1/24/2007
Posts: 426
Vette(s): MM Red 1971 T-top,LS5,4-speed, black leather C5 seats, Hooker sidepipes.
Previous: 64 Coupe, 65 Roadster L76 / N14
Not sure where I read it (a few years back), but Shell's Rotella T in viscosity 15W-40 was recommended, especially for older engines. It is designed primarily for diesel engines and trucks. I've been using it ever since. If I can find the article, I'll post it.
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Stanley, NC - USA
Joined: 8/9/2010
Posts: 91
Vette(s): 1981, dark blue w/carmel interior. 350 stock, auto tranny, Q-jet carb, ECM box
When I had to get a new crate engine installed in June due to the fuel pump cam lobe was toast, my mechanic, Dub at Corvette Etc researched this oil issue and found that Amsoil was the best to go with. I am using 10w-30 Z-Rod since I still have the cat converter on the exhaust. Amsoil does not have to have anything added, it's zinc level is where it needs to be for the flat tap cams.
Tommy
Just get the Lucas Hot Rod and Classic car oil off of Summit Racing. Free shipping and no tax. Easy peasy.
http://www.summitracing.com/search/Product-Line/Lucas-Hot-Rod-and-Classic-Car-Motor-Oil/
http://www.summitracing.com/search/Product-Line/Lucas-Hot-Rod-and-Classic-Car-Motor-Oil/
I use Joe Gibbs Hot Rod, Conventional (there's also a synthetic blend). Baxter Auto Parts in Portland (just across the Columbia for me and NO sales tax) carries it. Also easy peasy!
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
All the info you need to know about motor oil. Read the article by Duke Williams.
http://www.stlouisncrs.org/news_files/St_Louis_NCRS_Chapter_July_2011.pdf
my 1979 corvette 350 ci engine with 93000 miles stock engine I am going to use Amsoil for frist time I always added luces additive but going to use amsoil for high miles older engines. adam note this does not show a api rating. let you know how it all works out oil today its just hard to know witch oil to use what us said is coorect time something goes wrong it would be tolate I only out 3000 miles a year on this vehicle dwa
sundevil74 said: Not sure where I read it (a few years back), but Shell's Rotella T in viscosity 15W-40 was recommended, especially for older engines. It is designed primarily for diesel engines and trucks. I've been using it ever since. If I can find the article, I'll post it.
Use it myself. Got turned onto it by my son who builds 4 cylinder turbo engines. He gave it high ratings and said the import tunners swear by it. My Big Block likes it also.
Tomtall said:
Use it myself. Got turned onto it by my son who builds 4 cylinder turbo engines. He gave it high ratings and said the import tunners swear by it. My Big Block likes it also.
sundevil74 said: Not sure where I read it (a few years back), but Shell's Rotella T in viscosity 15W-40 was recommended, especially for older engines. It is designed primarily for diesel engines and trucks. I've been using it ever since. If I can find the article, I'll post it.
Use it myself. Got turned onto it by my son who builds 4 cylinder turbo engines. He gave it high ratings and said the import tunners swear by it. My Big Block likes it also.
I read somewhere that 10w40 weights and higher do not have to meet the lower zinc requirements for modern emission systems.
Shell took the zinc out of their oils just like everyone else though.
in Forum: C3 General Discussion
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