good to see youve come to your senses 
Crossfire oil
Thread Starter
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Crossfire oil
Reading the latest Corvette Magazine this afternoon. Tech Nerd was asked what kind of oil to use in an 84. His reply was : What GM recommended, Mobile 1." I think he missed this one.
Thread Starter
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Huh??? Tech Nerd said the 1984 owners manual recommended Mobile 1. I don't think so. Mobile 1 recommendation did not come to pass until the later C4's without the oil cooler. Clear enough?????
Instructor
Joined: Apr 2007
Posts: 215
Likes: 1
I noticed that in the mag too. I am sure the tech nerd will correct him/he self next issue. I believe 5w-30 was reccomended. could be wrong. I dont feel like going out to my garage and lifting the hood to look. I love my crossfire!!!
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Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Remember guys, that the oil manufacturers have removed the zinc and phosphorus from the oil blends because the EPA says those elements get into the catalytic converters, and causes them to be ineffective when that oil cokes up in there. The Nerd was steering you towards a sc oil that would protect your cam. The lack of the high pressure lubricating agents in the oil will reduce the life expectancy of your cam and lifters because the parts will have exaggerated wear.
Use a diesel oil, or Mobil one, or some other synthetic that has the sc ratng. The rating can be found on the label of the oil in the circle logo .
Use a diesel oil, or Mobil one, or some other synthetic that has the sc ratng. The rating can be found on the label of the oil in the circle logo .
Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
Remember guys, that the oil manufacturers have removed the zinc and phosphorus from the oil blends because the EPA says those elements get into the catalytic converters, and causes them to be ineffective when that oil cokes up in there. The Nerd was steering you towards a sc oil that would protect your cam. The lack of the high pressure lubricating agents in the oil will reduce the life expectancy of your cam and lifters because the parts will have exaggerated wear.
Use a diesel oil, or Mobil one, or some other synthetic that has the sc ratng. The rating can be found on the label of the oil in the circle logo .
Use a diesel oil, or Mobil one, or some other synthetic that has the sc ratng. The rating can be found on the label of the oil in the circle logo .
Every oil change I add in EOS lube for extra protection.
I don't worry about the cat since mine is gone and have a test pipe in place of it.
Melting Slicks
Joined: Dec 2004
Posts: 3,284
Likes: 51
From: Jacksonville, FL
St. Jude Donor '08 thru '26
It was introduced in the 70's, maybe early(?) 70's. Caused quite the debate back then about if you should use it on a "fresh" motor. A major question was would it allow the rings to seat properly, was it too slippery and would it stay in the bearing spaces after shut down, it's too runny and will leak out of all the seals...I remember how many people were very wary of this "new" oil. Man does all that seem too funny today?
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Be very careful believing what you see in any magazine. They are great for entertainment, but questionable for tech content. The writers have ferocious deadlines to meet every month, and there's very little double-check on technical accuracy. Their main objective is to sell advertising!
(I'm an advertiser.)
(I'm an advertiser.)
