Changing my oil...any input?

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Jun 17, 2006 | 11:14 AM

#21

PRNDL

Team Owner

Joined: Jul 1999

Posts: 26,545

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From: Huntersville NC

I use pure virgin olive oil - change the oil every 75 miles or 1 month, which ever comes first. It is a little expensive, but well worth it.

Jun 17, 2006 | 11:36 AM

#22

C66 Racing

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Joined: Aug 2001

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From: King George VA

Quote:

Originally Posted by vettlibito

I'm going to change the oil in my car this weekend, and I was wondering if anyone here knows whats the best synthetic oil I should use for my 76'. I was wondering if that Q advanced stuff was good? Any thoughts?

You can see how Quaker State's synthetic stacks up to others in this AMSOIL commissioned comparison:
Comparative Motor Oil Test

For those desiring to run a diesel oil, the AMSOIL Series 3000 Synthetic 5w30 Heavy Duty Diesel Oil is a very good synthetic and it is one of the few 5w30 synthetic diesel oils on the market.

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Jun 17, 2006 | 11:40 AM

#23

63mako

Race Director

Joined: May 2005

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From: Millington Illinois

St. Jude Donor '08-'09

Quote:

Originally Posted by ratflinger

I run Amsoil in my Silverado. 25k between changes & the oil is not degraded. After the Vette's new engine is broke in it will also get the Amsoil. Dual filters & oil analysis = 100K. They don't change turbine oil except at overhaul time.

I have a friend that does oil degradation testing. Amsoil tested better at 10,000 miles than any dino oil new. All the molecules are the same size. The dyno oils have small and large molecules. Think of oil as small ball bearings. If they are all the same size it will slide easier, load more evenly and protect from damage better than assorted size ball bearings. The downside is they are small so a oil leak that has large dino molecules clogging the leak will wash out and could have a leak form that wasn't there with the dyno oil. For protection synthetic is definetly better. Use an Amsoil filter and change it every 3,000 or every year whichever comes first and your engine will last.

Jun 17, 2006 | 11:48 AM

#24

63mako

Race Director

Joined: May 2005

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From: Millington Illinois

St. Jude Donor '08-'09

Above post was submitted at the same time as Subdriver above. Check out his link to oil tests.

Jun 17, 2006 | 12:02 PM

#25

C66 Racing

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From: King George VA

Quote:

Originally Posted by 63mako

Above post was submitted at the same time as Subdriver above. Check out his link to oil tests.

Thanks Mako.

For those interested in reviewing more tests, there are about a dozen on this page of my dealer website:
AMSOIL Performance Tests

Jun 17, 2006 | 06:22 PM

#26

David Ey

Burning Brakes

Joined: Sep 2004

Posts: 1,167

Likes: 2

From: Ft.Worth Texas

Quote:

Originally Posted by ratflinger

Jet turbine

Would the internals be subjected to combustion blow-by contaminates and the scrapings of cast iron rings and cylinders? There is a lot of nasty stuff in internal combustion oil that just doesn't get in the sealed turbine engine. I say use a good oil and change it often. Very often.

Jun 17, 2006 | 11:45 PM

#27

Photomania

Melting Slicks

Joined: Dec 2004

Posts: 2,527

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304,000 miles and still uses no oil

I've always used 10W40 Pennzoil in my '91 Nissan truck. To this day, it still runs fine even though it's got 304,000 miles and doesn't use a drop of oil. Not one drop.

I use 5W30 Mobil One in my '90 Corvette and it doesn't use any oil either. I change the oil every 4,000 miles in both vehicles.

Someday, I'll have a C3. I'll try to use whatever oil the previous owner was using.

Jun 18, 2006 | 12:54 AM

#28

Nice Ride

Drifting

Joined: Jan 2006

Posts: 1,554

Likes: 158

Why change to synthetic oil for a 76 motor? If you go to the "Search on this thread and type in (Motor oil) you will find out alot of info on the types of motor oil and the advantages of each. Don't think older motors "need" the synthetic oil so why not save $. Additionally you may find that synthetic motor oil will more quickly leak past older or worn seals. IMHO a good 10W-30 along with regular oil and filter changes is fully consistant with the design/requirements of older motors. The $ you will save over the higher cost of synthetic oil you can apply to more frequent oil changes with conventional oil which after all is the best way to extend the life of your motor.