Oill change time,,,new motor - Team Camaro Tech
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post #1 of 7 (permalink) Old Apr 11th, 04, 11:24 AM Thread Starter
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OK, can't believe its taken this long to log 400 miles, but its time. This is the first time I've put a new crate motor in a car, so I'm wondering about oil and filter...whats the best for my new motor? Its a GMPP 385 fastburn with the HOT cam and 1.6 roller rockers (zz430). Should I/ can I run synthetic oil, or is it too soon? I don't care about cost, I just want the very best.
Suggestions?

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post #2 of 7 (permalink) Old Apr 12th, 04, 01:49 AM
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IMO, I would replace oil filter with an AC/Delco and run dino oil in it until 7500-8000 miles are on it. This would let the rings seat to the cylinder wall aiding in sealing the combustion chamber. Then change to synthetic.

Replacing with an AC/Delco filter and maybe their oil, keeping the receipts handy for warranty issues. If by chance, the engine goes sour within the warranty period, you have two points in your favor, their oil & their filter.

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post #3 of 7 (permalink) Old Apr 12th, 04, 05:15 PM
 
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Ditto what Everett said about waiting till at least 8000m before switching to synthetic to let the rings seat properly! I waited till 10,000! Have 40000m now and still purrs like a kitten "till the lake pipes roar" hehe! [img]graemlins/thumbsup.gif[/img]
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post #4 of 7 (permalink) Old Apr 12th, 04, 05:33 PM
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Steve, you'll get different opinions, such as why does Mobil 1 get installed immediately in the Corvette, but it's been my experience to wait until the motor has at least 5000 miles.

I took a ZZ4 once that was of course "tested" at the factory before shipment, and drained the oil that was in it, and went right to synthetic. I can't say what caused it, but #7 cylinder didn't seal. It had a problem with blowing oil out of the breathers. All the other cylinders were good.

This was found after the motor had been driven over 5000 miles too.

I've been paranoid ever since, and keep petroleum oil in them for break in.

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post #5 of 7 (permalink) Old Apr 13th, 04, 08:23 AM
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Not to be contrary here, and just going on what my engine builder suggested to me. (He has tons of experience)

He said to run dino oil for the first 500 miles and then change to synthetic. Modern plasma moly rings seat quickly.

He also said this: "While synthetic oil is a better lubricant, don't leave it in any longer than you would dino oil. Contaminants still get past the rings and you should get that crap out of there evey 3,000 miles." (roughly accurate quote)

PS Here's a link to an interesting oil filter study.

http://minimopar.knizefamily.net/oilfilterstudy.html


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post #6 of 7 (permalink) Old Apr 13th, 04, 01:19 PM
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I am at the same point, time for another oil change. Debating on just making the switch but, I have always waited a few thousand miles. This time I have a few hundred miles on it. What do guys with race engines do? They don't drive for 5000 miles before putting synthetic in. I will be lucky if my engine lives for 5,000-7,500 miles, LOL. I figure I might as well give it the best chance. I am still up in the air as to which way I will go. Maybe one more oil change with Valvoline racing 30wt and then next change make the switch.

I would be interested to hear what you decide and how it works out.

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post #7 of 7 (permalink) Old Apr 14th, 04, 09:09 AM Thread Starter
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Thanks for the input guys. I will change over to synth...just not yet. Seems like the break-in argumment is just as powerful and the synth oil benefit. So...I'll stay with the dino oil for this round. Thanks again.

Steve W
1968 Camaro Convertible
1966 GTO Convertible
1995 Harley Road King
"You can't always get what you waaant..."

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