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Old 08-03-2018, 11:34 AM   #1
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Oil Question

What's the difference between regular oil and oil for high mileage vehicles?

I changed my oil a couple of weeks ago. I use Valvoline 5W-30 dexos rated full synthetic. I noticed the parts store had 5qt jugs on sale so I bought one of those and a single quart to go with it. I didn't notice until I started the oil change that the big jug was high mileage stuff.

I didn't figure it would hurt any so I used it, but I was just curious and I haven't posted a dumb question in a while.
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Old 08-03-2018, 11:35 AM   #2
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Probably more additives in the high mileage

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Old 08-03-2018, 01:21 PM   #3
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Yep! Just a few more additives to the oil. You aren't harming anything, you are fine to switch between the 2, or even mix them.
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Old 08-03-2018, 01:24 PM   #4
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Quote:
Originally Posted by ChibiBlackSheep View Post
Yep! Just a few more additives to the oil. You aren't harming anything, you are fine to switch between the 2, or even mix them.
Thanks, that's what I did. I had the oil drained before I realized it.
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Old 08-03-2018, 08:17 PM   #5
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I was under the impression the extra additives were for seal reconditioning. In some cases, they cause seals to swell a bit.

Maybe I'm thinking of something else though.
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Old 08-03-2018, 08:45 PM   #6
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Quote:
Originally Posted by InFiD3ViL View Post
I was under the impression the extra additives were for seal reconditioning. In some cases, they cause seals to swell a bit.

Maybe I'm thinking of something else though.
I think you are right..I have tried switching high mileage vehicles over to the high mileage oil with hope of decreased leaks, but results have been "so-so"..
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