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#1719553 - 12/25/09 05:58 PM High mileage oil, is it really needed?
wtd Online   content


Registered: 06/25/02
Posts: 1338
Loc: southwest Mo.
Currently all of my vehicles have over 75,000 miles with 132,000 miles being the most. Currently I've been using 5W-30 Valvoline conventional in all of them. Is there any benefit going to a high mileage oil if the engine is in good shape? Thanks.

Wayne
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

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#1719557 - 12/25/09 06:01 PM Re: High mileage oil, is it really needed? [Re: wtd]
coffee Offline


Registered: 03/11/07
Posts: 1116
Loc: Chandler, Arizona, USA
It is not needed but will not hurt anything and will probably help in the long run. If I were you I would use the MaxLife 5w30 syn blend.
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#1719558 - 12/25/09 06:02 PM Re: High mileage oil, is it really needed? [Re: wtd]
sangyup81 Offline


Registered: 10/24/09
Posts: 1647
Loc: Bowie, MD
Originally Posted By: wtd
Is there any benefit going to a high mileage oil if the engine is in good shape?


Probably not except for small, unnoticeable things. You'll see the noticeable benefits if your engine was in a state that really needed these things

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#1719636 - 12/25/09 07:36 PM Re: High mileage oil, is it really needed? [Re: sangyup81]
JHZR2 Offline



Registered: 12/14/02
Posts: 35439
Loc: New Jersey
IMO, case by case thing. Generally, no, but if a slight leak is forming, a slightly more robust oil is wanted, etc., it may be a good choice.

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#1719642 - 12/25/09 07:42 PM Re: High mileage oil, is it really needed? [Re: JHZR2]
CROWNVIC4LIFE Offline


Registered: 04/13/09
Posts: 3735
Loc: Miami-Dade County
I have never used high mileage oil on any car...Not even on a 88 Town Car that had 300K miles or 99 Grand Marquis that had almost 200K miles.
_________________________
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#1719645 - 12/25/09 07:42 PM Re: High mileage oil, is it really needed? [Re: JHZR2]
Mark72 Offline


Registered: 09/10/09
Posts: 940
Loc: Illinois
you know, i'm wondering if when GF5 SN rated conventional oil comes out, I think there will be EVEN less of a need for HM oil because they will have a better seal compatability rating. it's part of the new GF5 standard...you can read about it on their website.

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#1719681 - 12/25/09 08:42 PM Re: High mileage oil, is it really needed? [Re: Mark72]
wtd Online   content


Registered: 06/25/02
Posts: 1338
Loc: southwest Mo.
Thanks for the replies. I guess I will just stick with a regular conventional oil. Now I just need to decide if I'm staying with Valvoline or go with something else. I'm a big Havoline/Chevron fan but you can't find Chevron around here at all and since Walmart quit carrying Havoline, you can't find it very easily and when you do, its about $4.00 a quart.

Wayne
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

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#1719692 - 12/25/09 08:57 PM Re: High mileage oil, is it really needed? [Re: wtd]
tig1 Offline


Registered: 01/03/09
Posts: 10362
Loc: Illinois
_________________________
2007 Ford Fusion 152,000 miles
M1 0-20 AFE
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M1 0-20 AFE
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE

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#1719772 - 12/25/09 10:52 PM Re: High mileage oil, is it really needed? [Re: tig1]
1999nick Offline


Registered: 01/14/04
Posts: 1087
Loc: Germantown TN 38138
Originally Posted By: tig1


Sounds to me like M1 High Mileage would be a good oil for most any engine. I used it for an OCI last year in my 2005 Nissan Pathfinder with the 4.0 V-6, and just changed it out at 9117 miles. It used one third of a quart in 9117 miles, and still looked very good. My Pathfinder had about 34,500 miles on it when I put the oil in. I was impressed by the specifications on the Mobil website mentioned above. I especially liked that it is still an SL oil, like German Castrol, and has extra antiwear and cleaning additives. A minor downside is the fact that it is too robust to qualify as a fuel saving oil.

I now have the M1 0W30 maximum fuel saving oil in it, and do not notice any change in the fuel consumption. I notice no change at all in the sound of the engine, either. Bought the 0W30 with that coupon last month.

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#1719788 - 12/25/09 11:08 PM Re: High mileage oil, is it really needed? [Re: 1999nick]
killagt Offline


Registered: 06/19/07
Posts: 329
Loc: MS
if you go with maxlife, my first choice would be Maxlife, then pennzoil HM, then quaker state HM, grap wat ever on the list, but try maxlife first.

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#1719976 - 12/26/09 08:02 AM Re: High mileage oil, is it really needed? [Re: killagt]
gfh77665 Offline


Registered: 09/01/08
Posts: 2626
Loc: Southeast Texas
I like MaxLife because it's 30% synthetic. I am not sure if the others have any synthetic at all.

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#1719989 - 12/26/09 08:24 AM Re: High mileage oil, is it really needed? [Re: gfh77665]
Nickdfresh Offline


Registered: 03/15/06
Posts: 3835
Loc: Buffalo, NY
There's no major benefit to using HM oil in an engine that has been previously well maintained in most cases. However, the beefier add pack may do some light cleaning if there are any deposits, a HM engine may or may not benefit from a slightly thicker oil, and it wouldn't hurt the seals to maybe do an OCI. It seems people here think you either have to use HM or conventional oil and that you can't go back after using a run of MaxLife or something whereas I think it might not be a bad idea to do a run of HM oil, preferably in summer, to take advantage of the seal conditioners...

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#1720016 - 12/26/09 08:49 AM Re: High mileage oil, is it really needed? [Re: Nickdfresh]
Boss302fan Offline


Registered: 11/07/09
Posts: 2119
Loc: Oconomowoc Wi
I really like the Maxlife semi syn because it has a good amount of moly and it is really inexpensive at Wally world...Excellent oil that can be used in a new or higher mileage car.
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Wisconsin
2006 Lexus LS 430
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#1720054 - 12/26/09 09:36 AM Re: High mileage oil, is it really needed? [Re: wtd]
fdcg27 Online   content


Registered: 09/25/09
Posts: 10589
Loc: OH
If you have a specific problem, or set of problems, like high consumption, heavy deposits, or seal leaks, an HM oil is certainly worth a try.
Other than that, why bother?
_________________________
12 Accord LX 30K TGMO 0W-20
09 Forester 67K PU 5W-30
02 Accord 139K GOil 5W-30
01 Focus ZX3 101K Meijer Syn 5W-20
95 BMW 318iC 150K Defy 10W-40

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#1720445 - 12/26/09 03:28 PM Re: High mileage oil, is it really needed? [Re: killagt]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
High mileage oil is primarily to benefit seals. There is a slight cleaning, softening, swelling, and sealing benefit.
It can indeed help. Not always, but it sure can work.

But other benefits are a slightly tougher oil . More additives for longer life and sometimes better wear. Often they are a bit thicker than 'normal' oils - they are biased thicker in their viscosity range.

Use HM oil? It can't hurt. It may help.
I think there is a possibility that it can prevent seals from leaking in the first place [if they are getting old].


Edited by mechtech2 (12/26/09 03:29 PM)

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