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#49746 - 10/19/03 08:14 PM is High Mileage oil worth it?
Roadking Offline


Registered: 01/17/03
Posts: 77
Loc: Milwaukee, WI
I own two vehicles that are between 65k and 85k.
I've used Castrol GTX 10w-30 religiously since the second oil change in both vehicles.
My last oil change I used Napa oil(Valvoline) and they both have started to seep a little oil around the pan gasket area? (3000 miles)

Do the high mileage oils really have merit in reducing oil leakage?

I'm curious if anyone else has had this problem when switching from one brand to another?
especially, if you've used one brand for a long time.

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#49747 - 10/20/03 09:01 AM Re: is High Mileage oil worth it?
ruking77 Offline


Registered: 04/01/03
Posts: 824
Loc: San Jose area, CA
The short answer is no. I would not pay a premium for so called high mileage oil.

If pan gasket is leaking, in order of easy to harder 1. to retorque the pan gasket bolts back to factory specification. 2.If it still seeps it might be a good time to change out the gasket and retorque to factory specifications at your next oil change.

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#49748 - 10/20/03 09:25 AM Re: is High Mileage oil worth it?
sbc350gearhead Offline


Registered: 06/26/03
Posts: 2556
Loc: Columbus Ohio
The high mileage oils have a thicker viscosity, and use about 10% esters, for cleaning and seal swelling. I don't know how much seal swell, you are going to get with only 10% esters though. The HM oils seem to be more shear stable, from looking at the UOA's posted here.

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#49749 - 10/20/03 09:48 AM Re: is High Mileage oil worth it?
Flimflam Offline


Registered: 01/18/03
Posts: 453
Loc: Galveston, TX
quote:
Originally posted by Roadking:
I own two vehicles that are between 65k and 85k.
I've used Castrol GTX 10w-30 religiously since the second oil change in both vehicles.
My last oil change I used Napa oil(Valvoline) and they both have started to seep a little oil around the pan gasket area.......

If something works, don't mess with it. GTX 10w-30 has worked for you, so why bother using anything else? Having said the above, I am soon about to change my motor oil to a different brand. I am going to switch over to Schaeffer Supreme 7000 as soon as I run my Auto-RX cycles with mineral oil.

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#49750 - 10/20/03 09:53 AM Re: is High Mileage oil worth it?
Intelman34 Offline


Registered: 09/07/02
Posts: 310
Loc: Waukesha, Wisconsin
The combination of Auto-RX Castrol HM oil stopped the oil burning and leaks that my 93 Thunderbird 5.0 had.

You could always try a diesel oil like Pennzoil Long Life or Chevron Delo 400.

I see that you are from Milwaukee.... with winter coming up, you may want to give Shell Rotella T Synthetic a shot in the winter.

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#49751 - 10/19/03 11:00 PM Re: is High Mileage oil worth it?
Roadking Offline


Registered: 01/17/03
Posts: 77
Loc: Milwaukee, WI
I didn't really change brands, I ended up inheriting a case of napa brand oil from a neighbor who was moving.
So I decided to use it last spring in both vehicles.
Now i'm getting ready to do my fall/winter oil changes and it was just coincidental that both vehicles pan gasket look wet.

I was investigating the high mileage motor oils and their benefits.
Seemed like a good fit until I saw the price.

So is one brand better then the others?
I'd be willing to give it a try if it does what it says?

Any advice?

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#49752 - 10/19/03 11:05 PM Re: is High Mileage oil worth it?
sbc350gearhead Offline


Registered: 06/26/03
Posts: 2556
Loc: Columbus Ohio
With the HM oils.....pennzoil would be my first choice. Castrol would be my 2nd.

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#49753 - 10/20/03 12:26 AM Re: is High Mileage oil worth it?
Flimflam Offline


Registered: 01/18/03
Posts: 453
Loc: Galveston, TX
quote:
Originally posted by Roadking:


So is one brand better then the others?
I'd be willing to give it a try if it does what it says?

Any advice?

Shakespeare: "...for nothing is either good nor bad....but thinking makes it so." If I am a little bit in error, pardon me....it has been some time since High School!!!!! [Big Grin]

But seriously now, it all depends how you and your engine like it. For me, all my 7 or 10 vehicles since 1977 like Castrol GTX. But I do not claim that it will work for everybody. My mother, she has no idea what oil goes in her engine at each service.....nor does she care. Her vehicles have all done at least as well as mine.

I think people bother about what brand of oil because they see their vehicle as some kind of phallic symbol......some extension of their Ego. So, they feel they must go the extra mile for it. Maybe that is why I am changing to an oil that costs 3X as much....even though there is nothing wrong with my old brand.

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#49754 - 10/20/03 12:57 AM Re: is High Mileage oil worth it?
Virtuoso Offline


Registered: 02/25/03
Posts: 2635
Loc: Cow town, NE
My SHO eats Castrol GTX High-Milage just as fast as the regular GTX. [Smile] Not worth the extra 70 cents or so a quart, at least not for me. Your milage may vary.

[ October 20, 2003, 03:58 PM: Message edited by: Virtuoso ]

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#49755 - 10/20/03 04:31 AM Re: is High Mileage oil worth it?
Matt89 Offline


Registered: 04/21/03
Posts: 1432
Loc: Virginia
Flimflam, you've hit the nail right on the head.

Funny how people don't get particular about toothpaste, spray starch or skim milk. They just don't offer the psychological payoff of precisely engineered lubricants [Smile]

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#49756 - 10/20/03 04:45 AM Re: is High Mileage oil worth it?
ex_MGB Offline


Registered: 08/30/02
Posts: 597
Loc: Salisbury, MD
I think people bother about what brand of oil because they see their vehicle as some kind of phallic symbol......some extension of their Ego.

Well, certainly you would agree that egoism is the essence of nobility? For my part, a vehicle is but a poor substitute for a Norman castle and a herd of Anglo-Saxon swine to lord over [Big Grin]

[Off Topic!] Hmmm... I wonder whether Robin Hood was the model for Marx?

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#49757 - 10/20/03 06:03 AM Re: is High Mileage oil worth it?
Roadking Offline


Registered: 01/17/03
Posts: 77
Loc: Milwaukee, WI
You Da Man, Flinflam

I think so you are!

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#49758 - 10/20/03 06:45 AM Re: is High Mileage oil worth it?
bottgers Offline


Registered: 07/01/02
Posts: 454
Loc: Cheyenne
For what it's worth, I tried Valvoline's Max Life in my Tercel to deal with the engine puffing smoke when I first start it in the morning. The Max Life did absolutely nothing.

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#49759 - 10/20/03 08:14 AM Re: is High Mileage oil worth it?
MolaKule Offline


Registered: 06/05/02
Posts: 14643
Loc: Midwest
quote:
The combination of Auto-RX Castrol HM oil stopped the oil burning and leaks that my 93 Thunderbird 5.0 had.

I would attribute that to Auto-RX unless you had used other oils and ARX.

BTW, Not much will solve a gasket leak, save retorquing or replacement.

Seals are a different matter and this is where Auto-RX will help.

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#49760 - 10/20/03 09:29 AM Re: is High Mileage oil worth it?
Robbie Alexander Offline


Registered: 08/16/03
Posts: 1533
Loc: Ephraim
quote:
Originally posted by Roadking:
*-*-*-*-*-*
I'm curious if anyone else has had this problem when switching from one brand to another?
especially, if you've used one brand for a long time.

Yup. Can. Depends on the oil. Does not mean the oil is bad.
Some oils will clean so well that an engine with lots of miles say like 60-120k for gasoline, and has a good deal of buildup, can cause leak/ more often burining for a time or a long time until rings seated. As for waht I'd rather have: a leak I can see and monitor than have a set of rings or other internal components getting clogged-up, and not see them.

IMO: Some oils do not contain the additives needed to swell seals much because they are so good that the engines don't get dirty enough and so the seals can function their normal intended lifespan...

As far as is Napa oil(Valvoline) the oil that caused this? Is it a good oil? will it--????
I donno, I would do a treatment to clean the engine, then replace the leaking seals, then go with a good quality oil that keeps the engine clean to begin with, and IMO this will help the future seals last longer.

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