LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

High Mileage Oil

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Old 07-15-2004, 11:54 PM
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Question High Mileage Oil

Anybody got any experience with Valvolines High Mileage Synthetic? I bought a case of it for my oil change, on a whim, and was just wondering if anyone has any experience with it. Car has 96K on it, just if anyone was wondering. Thanks
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Old 07-16-2004, 12:03 AM
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Its BS. If you are really worried, throw a can of RESTORE in it and run good synthetic oil like Mobil 1 0w40 or German Castrol 0w30.
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Old 07-16-2004, 08:43 AM
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High milage oil is B.S. but Restore is good . The high milage oils can provide some cleaning and seal conditioning benifits, restore on the other hand will not go into anything I own.

For all your lube question why not go to a site where the info is more scientific and less opinion. Here is a link about restore on just such a site. http://theoildrop.server101.com/cgi/...c;f=5;t=000538
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Old 07-16-2004, 09:27 AM
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High mileage oil has more sealants and cleaners in it. It does not hurt to run it, its only a tri-synthetic and it works pretty decent, but it's usually only for vehicles over 75,000.
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Old 07-16-2004, 09:56 AM
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High mileage oil has more sealants and cleaners in it. It does not hurt to run it

All I have used is Valvoline High Mileage in my car and have had no problems. It has more conditioners and sealants the regular oil, so as said above it cant hurt anything.
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Old 07-16-2004, 10:19 AM
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Just run Castrol 20w-50 and ull be fine....
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Old 07-16-2004, 11:35 AM
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That oil is just a lil thick for winters up here in Northern Illinois
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Old 07-16-2004, 02:22 PM
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very tru...its hot as hell down here in south florida all the time....never really gets cold at all...nothing a long sleeve shirt can fix..

Cory
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Old 07-16-2004, 04:31 PM
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Patman, the oil guru, has a higher mileage LT1 as far as I know, and he is running Castrol Syntec, the german stuff though.

As far as I know, it seems like he really rags on his car ( In on thread a while back he said he floors his car at least once every time he drives it lol ) and says that the oil samples have showed virtually ZERO wear.
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Old 07-16-2004, 05:47 PM
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I have 146k on my LT1 now and have been using the Valvoline high mileage oil since about 100k, I tried mobile synthetic but my car leaked like no other put the Valvoline back in it and I only see a spot every once in a while.
For what its worth........
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Old 07-16-2004, 05:51 PM
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i use mobil synthetic high mileage!
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Old 07-16-2004, 06:57 PM
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http://www.lubereport.com/e_article000200588.cfm

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Old 07-16-2004, 10:46 PM
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Originally posted by HardcoreRM125
Patman, the oil guru, has a higher mileage LT1 as far as I know, and he is running Castrol Syntec, the german stuff though.

As far as I know, it seems like he really rags on his car ( In on thread a while back he said he floors his car at least once every time he drives it lol ) and says that the oil samples have showed virtually ZERO wear.
Patman runs the 0w-30. 20-w50 is a bit much and you run the risk of pumping up the lifters which could slightly hang the valve open when it should not be.
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Old 07-16-2004, 11:50 PM
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20W-50W won't hurt anything in your engine including the lifters.It will be good to 32*F and then you will need to go to a 10W-30 for cold cranking.In our service trucks in Alaska that is what we ran except when it got to 0 or below we didn't ever shut them off.We also kept them pluged up to block heaters while they were running below 0.
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