Finally changed to "high mileage" oil

When I initially switched to Napa high mileage, my very small RMS leak became temporarily worse. After a week or so, it resolved itself and now the leak is completely gone. I don’t even have the oil that hangs out on the bell housing anymore. I was coming from Mobil one blend oil.
 
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Jerry Bransford said:
Check out NAPA the next time. They have a NAPA brand 10W-30 High Mileage that is made for them by Valvoline.
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Jerry or anyone else.....is NAPA High Mileage 10w-30 (in the red bottle) a conventional or blend? Website is very confusing....refers to it as a blend AND conventional :rolleyes:. There is no mention of blend anywhere on the bottle.

Conventional High Mileage Motor Oil​

NAPA High Mileage Synthetic Blend Motor Oil is formulated with advanced additive technology and highly refined, premium quality base stocks to be a better lubricant and improve performance for engines over 75,000 miles.
 
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Rcroane said:
Jerry or anyone else.....is NAPA High Mileage 10w-30 (in the red bottle) a conventional or blend? Website is very confusing....refers to it as a blend AND conventional :rolleyes:. There is no mention of blend anywhere on the bottle.

Conventional High Mileage Motor Oil​

NAPA High Mileage Synthetic Blend Motor Oil is formulated with advanced additive technology and highly refined, premium quality base stocks to be a better lubricant and improve performance for engines over 75,000 miles.
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It doesn’t say on the bottle, but I’ve bought and used it assuming it was a conventional oil. Could be a synthetic blend I suppose but it doesn’t say that on the bottle either.
 
Yasha said:
Not true information. Synthetic oils are thinner and can more easily leak past worn or shrunken seals - while this means the synthetic might leak more than conventional in the same engine, the oil doesn't cause the wear.

If you're changing up to thicker oil to reduce leaks or build oil pressure, you're just delaying the inevitable. Your engine is dying and you should be building a new one. That is if you want to keep the car for a while. Actually you're putting off this task and accelerating wear. Most wear happens on startup. Changing from 10W30 to 20W50 might stop leaks but it also increases the time it takes for the engine to be fully lubricated after start.
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Not thinner per-say, but is comprised of (or made from) smaller molecules, hence the reason it can cause leaks. Since the molecules are smaller, it seeps out through the smaller gaps that regular dino oil cannot. Plus it runs cleaner and can remove some of the 'sludge' that might have been 'clogging' or stopping conventional oil from leaking out.
 
Rcroane said:
Jerry or anyone else.....is NAPA High Mileage 10w-30 (in the red bottle) a conventional or blend? Website is very confusing....refers to it as a blend AND conventional :rolleyes:. There is no mention of blend anywhere on the bottle.

Conventional High Mileage Motor Oil​

NAPA High Mileage Synthetic Blend Motor Oil is formulated with advanced additive technology and highly refined, premium quality base stocks to be a better lubricant and improve performance for engines over 75,000 miles.
Click to expand...
https://www.napaonline.com/en/p/NOL75305

On sale too…
 
jazngab said:
It doesn’t say on the bottle, but I’ve bought and used it assuming it was a conventional oil. Could be a synthetic blend I suppose but it doesn’t say that on the bottle either.
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I don't have the time to look for the thread here that gives the Pennzoil part number on the bottle but that's what assures it's a conventional. It's what I used for my last oil change. The red bottle of High Mileage can be either a blend or conventional so that p/n can confirm which it is. I will stop by the Walmart I bought mine from soon to get more of it and will post the p/n if no one else here has done so by then.
 
Jerry Bransford said:
I don't have the time to look for the thread here that gives the Pennzoil part number on the bottle but that's what assures it's a conventional. It's what I used for my last oil change. The red bottle of High Mileage can be either a blend or conventional so that p/n can confirm which it is. I will stop by the Walmart I bought mine from soon to get more of it and will post the p/n if no one else here has done so by then.
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Thanks. The p/n on what I've been using is 75-300. You mention Penzoil, but isn't the NAPA product made by Valvoline?
 
Rcroane said:
Thanks. The p/n on what I've been using is 75-300. You mention Penzoil, but isn't the NAPA product made by Valvoline?
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Yes the NAPA oils are made by Valvoline but Valvoline no longer makes any pure conventional engine oils. That was confirmed when I called Valvoline a couple years ago to confirm if they still provided a conventional high mileage engine oil to NAPA and they confirmed they stopped producing conventional engine oils.
 
Jerry Bransford said:
Yes the NAPA oils are made by Valvoline but Valvoline no longer makes any pure conventional engine oils. That was confirmed when I called Valvoline a couple years ago to confirm if they still provided a conventional high mileage engine oil to NAPA and they confirmed they stopped producing conventional engine oils.
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Well, I guess that confirms it then. The NAPA red bottle high mileage is a blend since Valvoline makes it and they don't make anything conventional. It sure would be helpful if they would put that on the label.

Edit....confused again. This one is also made by Valvoline and the ad says it is conventional. Maybe "blend" is the new "conventional"!

https://www.napaonline.com/en/p/NOL...kyXx3js13JvN87BtZRoCR7gQAvD_BwE&gclsrc=aw.ds&
 
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Lsunk1 said:
good lord, 33 dollars for 5 qts!
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Must be regional… Va here…

FC685703-A8F0-42A2-92E6-BC19E59A6F05.jpeg
 
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Rcroane said:
Well, I guess that confirms it then. The NAPA red bottle high mileage is a blend since Valvoline makes it and they don't make anything conventional. It sure would be helpful if they would put that on the label.

Edit....confused again. This one is also made by Valvoline and the ad says it is conventional. Maybe "blend" is the new "conventional"!

https://www.napaonline.com/en/p/NOL...kyXx3js13JvN87BtZRoCR7gQAvD_BwE&gclsrc=aw.ds&
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If that is still really available at NAPA they're likely getting it from somewhere other than Valvoline. Maybe Pennzoil who still produces conventional engine oils.
 
Jerry Bransford said:
If that is still really available at NAPA they're likely getting it from somewhere other than Valvoline. Maybe Pennzoil who still produces conventional engine oils.
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Perhaps....but it says it is made by Valvoline in the Specifications section. And they had it on the shelf at my local NAPA. Seems like the disclosure police need to look into motor oil labels!
 
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Pennzoil doesn’t make a conventional anymore either, the yellow bottle is a blend.
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I’ve been on the hunt for a high mileage conventional too but haven’t found any yet. The only conventional (not HM) I’ve even been able to find is Castrol GTX (not the GTX ultra-clean which is a blend)
 
Pennzoil high mileage with the red label is conventional. That's what I started using. First oil change stopped a rms leak about 75%. Second oil change and she doesn't leak a drop anymore.

Pennzoil High Mileage Conventional 10W-30 Motor Oil for Vehicles Over 75K Miles (1-Quart, Case of 6) https://www.amazon.com/dp/B006A49BWI/?tag=wranglerorg-20

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Btw you wanna talk about expensive oil? Those black quarts in that picture is Brad Penn high performance synthetic blend green stuff. I run that in my air-cooled 63 VW. $10 a qt.

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