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06 GTO LS2 M1 0w40 3.5k Miles #5241649 10/16/19 05:37 PM
Joined: Jun 2017
Posts: 50
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Vigg Offline OP
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So this report might make a few people upset. Reason being is that this oil was in my car for around 3 years. This car is a weekend car if you can even call it that. I think in the last 2 years I've done 500 miles. It stays parked inside at my office and just doesn't get driven much. With that said I've made a conscious effort to drive it more recently.

This M1 0w40 is the old formula by the way not the new FS stuff. Had a Purolator Pure One filter on it.

Car is stock with the exception of a K&N drop in filter, Predator tune, and Mishimoto radiator ( I had two replacements fail at the crappy plastic endcaps and said no more)

I wait for the car to get up to operating temperature before getting on it. I would say 90% of those miles are city and the other 10% highway. No track time but I do get on it frequently.



I think it looks pretty good for how old the oil is. Only item that looks a little elevated is iron but I hear these LSx motors tend to shed some. Like to hear your thoughts on this.

Oil that went in was Castrol 0w40 with a M1 filter. [Linked Image]

Re: 06 GTO LS2 M1 0w40 3.5k Miles [Re: Vigg] #5241664 10/16/19 05:48 PM
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A_Harman Offline
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I'm not one of those people that get upset about leaving oil in a seldom-used car. Oil can't tell time. And the car is stored inside.
Your UOA looks fine. The oil could have gone longer. Next, extend the OCI to 5000 miles.
But you bought the car to enjoy, so drive it more.


1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck
Re: 06 GTO LS2 M1 0w40 3.5k Miles [Re: Vigg] #5241669 10/16/19 05:51 PM
Joined: Sep 2015
Posts: 4,334
69GTX Online Content
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Basically a short tripper. But the oil looks good. Didn't shear down much at all.


----------------

2001 Lincoln Cont 4.6L DOHC/ 50K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: 06 GTO LS2 M1 0w40 3.5k Miles [Re: Vigg] #5241965 10/17/19 04:57 AM
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joekingcorvette Online Content
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That's a good report since you had the oil in there for 3 years. I was contemplating changing it in my Corvette with 6 months and the OLM is showing 81 percent. I was going to change it before storage but it was just too cold out and I didn't feel like it since I was back from a long road trip with it. Now I can leave the oil in there all winter with confidence. BTW those 06 GTO's are a nice ride.


2005 Chevrolet Corvette
2014 Ford F-150 4x4 supercrew
2014 Jeep Grand Cherokee Limited (wifes)
2012 Honda Civic 4 door (my daily driver)
2007 Lund Tyee Grand Sport Mercury 115HP 9.8HP
Re: 06 GTO LS2 M1 0w40 3.5k Miles [Re: Vigg] #5242003 10/17/19 06:08 AM
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toneydoc Offline
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That report looks fine
The oil could easily go out to 5k miles and beyond


1994 Jeep 166k NextGen 10w30
2014 Camry 42k Castrol Magnatec 0w20
2018 Jeep Cherokee 6k Pennzoil Platinum 5w30
2014 HD Ultra 51k Mobil1 15w50
Re: 06 GTO LS2 M1 0w40 3.5k Miles [Re: toneydoc] #5242081 10/17/19 07:43 AM
Joined: Jun 2017
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Vigg Offline OP
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Originally Posted by A_Harman
I'm not one of those people that get upset about leaving oil in a seldom-used car. Oil can't tell time. And the car is stored inside.
Your UOA looks fine. The oil could have gone longer. Next, extend the OCI to 5000 miles.
But you bought the car to enjoy, so drive it more.


Yep that's the plan going to drive it more. Need to perform some TLC fixes to it. While I had the skid plate off to change the oil I noticed driver side motor mount was split and puked fluid out. Going to replace both just don't know if I will go with OEM or aftermarket Delrin ones.

Originally Posted by 69GTX
Basically a short tripper. But the oil looks good. Didn't shear down much at all.


Yes basically a short tripper but I would say the oil gets to temperature every time.

Originally Posted by joekingcorvette
That's a good report since you had the oil in there for 3 years. I was contemplating changing it in my Corvette with 6 months and the OLM is showing 81 percent. I was going to change it before storage but it was just too cold out and I didn't feel like it since I was back from a long road trip with it. Now I can leave the oil in there all winter with confidence. BTW those 06 GTO's are a nice ride.


I wish these cars had the filter up top so I can use my top side extractor. Suppose its good to get under there from time to time. I found out I had a broken motor mount so it payed off to crawl under there.

Thanks for the kind words. I've had this car since 07 so its been in the family for a long time. I got a 01 Z06 a few years ago and part of the agreement with my wife was to sell the GTO. Well a few years later I still have both LOL

Always loved and will love Corvettes though. Excited to see the new C8 in person. What year is yours?

Originally Posted by toneydoc
That report looks fine
The oil could easily go out to 5k miles and beyond


I'm not so concerned with mileage as I am with time. At this rate It would be 6+ years before 5k miles. I think I'll just change the oil every 3 years unless people think I should go longer. I know people say every year or xxx amount of miles. Some people say 2 years is fine. 3 years appears to be fine but should I be concerned with going longer then that? I mean oil is cheap for this car I just sort of forgot to do it sooner on this car. I'm on a strict regiment for my DD's.

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