What oil for C5
Melting Slicks
Joined: Dec 2003
Posts: 2,857
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From: pawleys island sc
I don't see anything sarcastic in the responses. The oil cap suggestion is a good one since the answer is right there. Also, if you don't have an Owner's Manual, get one and read it. It removes the "backyard mechanic" misinformation aspect from free advice, and it's ground truth at your fingertips.
questions like this, to this audience, are extremely subjective. You're not talking to a bunch of oil experts but just a collection of owners with differing backgrounds and experiences with automobiles. There are a few people here that do know a great deal about the C5(Evil Twin is foremost in this regard and a search of his posts, although highly sarcastic, will provide you with some real insight to the C5) but, on average you're much better researching GM's recommendations for things like fluids and lubracants.If you do research GM's recommendations you'll find that any synthetic motor oil that meets GM spec 4718M is approved, not by the members of this Forum, by GM engineering .As far as I know, the only weight oil that will meet that GM spec is
5W30.
But, it is YOUR car, so do your reseach and put in whatever you think is best.
As far as the brand to use remember the Mobil 1 sticker is on the oil cap because Mobil PAID GM to put it there.
As far as a bunch of sarcastic members , you're correct - but for many people today being sarcastic equates to being "cool" and we all know how important it is to be "cool" rather than helpful,especially when you don't know what you're talking about.
Last edited by 99 vett babycar; Dec 12, 2008 at 10:39 AM.
Tech Contributor
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
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St. Jude Donor '08-'09
questions like this, to this audience, are extremely subjective. You're not talking to a bunch of oil experts but just a collection of owners with differing backgrounds and experiences with automobiles. There are a few people here that do know a great deal about the c5(evil twin is foremost in this regard and a search of his posts, although highly sarcastic, will provide you with some real insight to the c5) but, on average you're much better researching gm's recommendations for things like fluids and lubracants.if you do research gm's recommendations you'll find that any synthetic motor oil that meets gm spec 4718m is approved, not by the members of this forum, by gm engineering .As far as i know, the only weight oil that will meet that gm spec is
5w30.
But, it is your car, so do your reseach and put in whatever you think is best.
As far as the brand to use remember the mobil 1 sticker is on the oil cap because mobil paid gm to put it there.
As far as a bunch of sarcastic members , you're correct - but for many people today being sarcastic equates to being "cool" and we all know how important it is to be "cool" rather than helpful,especially when you don't know what you're talking about.
Tech Contributor
Joined: May 2008
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From: Somers, CT and Clermont, FL
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
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From: King George VA
However, as an FYI, there are several 0w30s and 10w30s that meet GM Standard 4178M including both AMSOIL and Mobil 1 0w30 and 10w30.
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AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Melting Slicks
Joined: Dec 2003
Posts: 2,857
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From: pawleys island sc
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