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Favorite Oil?

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Old Oct 21, 2008 | 10:08 PM
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Default Favorite Oil?

For the C4, whats your favorite synthetic oil?? Mobil 1, Pennzoil or Valvoline?
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Old Oct 21, 2008 | 10:10 PM
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Originally Posted by VetteDriven
For the C4, whats your favorite synthetic oil?? Mobil 1, Pennzoil or Valvoline?
Mobil 1 hands down
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Old Oct 21, 2008 | 10:17 PM
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My '90 was an L-98 car. (remember it was a big pile of parts) A small block Chevy does just fine on Castrol GTX. There is no need for synthetic with a quality oil. Now let the brow beating begin.

...just remember, Corvettes did fine on conventional oil for 40 years before they had synthetic. They also changed nothing inside the engine that made it a neccesity to run synthetic.

just my .02
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Old Oct 21, 2008 | 10:19 PM
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Mobil 1 full synthetic 5w30, just like the manual recommends.

The L-98 is fine with dino oil, but at the temperatures the LT-engines run at, synthetic is cheap insurance (compared to a new engine...)
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Old Oct 21, 2008 | 10:21 PM
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Originally Posted by earthquake68
My '90 was an L-98 car. (remember it was a big pile of parts) A small block Chevy does just fine on Castrol GTX. There is no need for synthetic with a quality oil. Now let the brow beating begin.

...just remember, Corvettes did fine on conventional oil for 40 years before they had synthetic. They also changed nothing inside the engine that made it a neccesity to run synthetic.

just my .02
While I agree with you, some engines such as the LT1 run at pretty high temperatures and for that reason, I'd prefer to run a synthetic.

Synthetic is the way to go I run it in my ZR-1 & LS1 too!
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Old Oct 21, 2008 | 10:25 PM
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Default Mobil 1

Mobil 1 5W30 - because it is what I was told to do by a higher authority.
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Old Oct 21, 2008 | 10:29 PM
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What went in the crankcase from the factory-Mobil 1 synthetic.
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Old Oct 21, 2008 | 10:49 PM
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Originally Posted by BigDR
Mobil 1 5W30 - because it is what I was told to do by a higher authority.
You been talking to my wife???
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Old Oct 21, 2008 | 10:52 PM
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Let me ask this question guys. What do your engines run at, temperature-wise? Mine runs at 180 degrees on a hot summer day. I'm asking because I honestly don't know, is this not normal for a C-4? I figure if the water temperature is normal, cylender head temp should be close as well. I'm just trying to gather info for future reference. Sorry to hi-jack the thread.
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Old Oct 21, 2008 | 11:13 PM
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Currently - Havoline Premium 15W-40

ROYAL PURPLE next spring

Last edited by VETTEHIGH; Oct 21, 2008 at 11:15 PM.
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Old Oct 22, 2008 | 12:06 AM
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Originally Posted by earthquake68
Let me ask this question guys. What do your engines run at, temperature-wise? Mine runs at 180 degrees on a hot summer day. I'm asking because I honestly don't know, is this not normal for a C-4? I figure if the water temperature is normal, cylender head temp should be close as well. I'm just trying to gather info for future reference. Sorry to hi-jack the thread.
On a normal 75* day, i'll be around 185* oil-temp. When it gets hot maybe up to 205*. But at the track 230* isn't uncommon, both AutoX and at the drag strip.
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Old Oct 22, 2008 | 12:11 AM
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Mobil 1 like it says on the oil filler cap
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Old Oct 22, 2008 | 12:25 AM
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Mobil 1 5W-30 every 3,000
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Old Oct 22, 2008 | 02:44 AM
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Originally Posted by StealthLT4
Mobil 1 full synthetic 5w30, just like the manual recommends.

The L-98 is fine with dino oil, but at the temperatures the LT-engines run at, synthetic is cheap insurance (compared to a new engine...)

Laura
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Old Oct 22, 2008 | 02:57 AM
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Originally Posted by VetteDriven
For the C4, whats your favorite synthetic oil?? Mobil 1, Pennzoil or Valvoline?
Neither - Royal Purple.
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Old Oct 22, 2008 | 04:00 AM
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Mobil 1 but I have used Redline.
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Old Oct 22, 2008 | 06:53 AM
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Another Vote for Mobil 1
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Old Oct 22, 2008 | 08:37 AM
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Mobil 1 in the 5-quart jug from Wal-Mart.
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Old Oct 22, 2008 | 08:44 AM
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Originally Posted by xlr8nflorida
Mobil 1 hands down
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Old Oct 22, 2008 | 09:10 AM
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Amsoil, but I usually have to settle for Mobil-1
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