should an LS1 use oil??? - Team Camaro Tech
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post #1 of 8 (permalink) Old Nov 6th, 00, 11:23 AM Thread Starter
Join Date: Sep 2000
Location: san jose, ca usa
Posts: 12

my 99Z28 LS1 seems to be using quite a bit of oil, sometimes as much as 2 quarts between changes. is this normal? don't see blue smoke or leaks underneath.

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post #2 of 8 (permalink) Old Nov 6th, 00, 11:33 AM
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im no expert but i wouldnt think it should do that on a newer motor like that but dunno what it could be. Do u hot rod it alot? , and also check your oil plug for leaks and your oil filter never know .and make sure there tight and also look at the front of your intake and make sure its not leakin there cause i blew that out on my truck and it used more oil after that happened good luck
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post #3 of 8 (permalink) Old Nov 6th, 00, 11:57 AM
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How many miles you put on between changes? You won't see blue smoke because the cat. converter will suck it up.

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post #4 of 8 (permalink) Old Nov 6th, 00, 12:34 PM Thread Starter
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Location: san jose, ca usa
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try to do it every 3000mi, but you know how that goes, i've slipped into the habit of letting the "change oil" warning light tell me when to do it, which is usually about every 4000. i don't see any leaks around the plug, filter, or intake. it's a Z, so naturally i'm going to get squirrely every now and then, but i don't think i'm particularly hard on the motor. it's not like i blow away cobras off the line every day, just every once in a while. i use standard 5W/30, not synthetic. maybe synthetic would help if the oil's breaking down or burning... i don't know, just thought other ls1 owners could let me know if they have experienced the same. thanks for your suggestions.
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post #5 of 8 (permalink) Old Nov 6th, 00, 12:46 PM
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I have been lerking around the SLP board since I picked up the '96SS. There is a lot of talk there about oil use and 4th gens with the LS1. Seem GM feels 1 - 1 1/2 quarts between changes is acceptable. I have also heard of guys having the motors replaced by GM for excessive oil consumption... They put you through the drill though! Fill the crankcase and seal it! You bring it back they break the seal and check the oil level.... My LT1 has 55k on it, 600 mi since I got it along with fresh oil. It's still right on the line! Good luck!

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post #6 of 8 (permalink) Old Nov 6th, 00, 01:38 PM
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I have a 97 Vette with the LS1. It does not use a drop between changes. I do use Mobile One Synthetic. I bought the car new it now has 53000 miles on it and it gets a good flogging at least once a weak. Have your local Chevy dealer do an oil consumption test on it.

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post #7 of 8 (permalink) Old Nov 6th, 00, 03:43 PM
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All the older V-8's (original block casting types)that I've had have used alittle oil. Not much, 1/2 to a quart and a 1/4 in 3000-45,5000 miles in years gone by.

But don't know about any of the later engines.

I just hope the Generals "better idea" holds up because they obsoleted the best engine design in the world when they got away from the first block type. IMHO

PS. My '87 Chevy (Suzuki) Sprint ER 3-banger went 200,000 and never used a drop over 1/2 quart with oil changes averaging from 3500/4000 miles up to once at 9500. I wish American cars would do the same.

I think that it has to do with Tin or Nickel content alloy in the cast-iron as cast. Seems the stuff is harder and wears longer but at the expense of tooling wear costs.
So they can make them to last!!!

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post #8 of 8 (permalink) Old Nov 14th, 00, 08:26 PM
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Location: San Antonio, Texas
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I don't know about what manuals you have been reading but new LS1's manuals only reccommend oil changes at 7000 miles, 7500 max. That 3000 garbage was when cars were ol' lead burners and we used natural oils instead of synthetics. My best guess would be to go ahead and fork the money for a GM computer code reader and check that at every oil change to see if the computer recognizes any problem.
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