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#1304999 - 12/08/08 10:22 AM Subaru Legacy with 145K miles - use Mobil 1?
pacem Offline


Registered: 10/16/03
Posts: 461
Loc: MD
98 Subaru Legacy with 146K miles, is it worthwhile putting Mobil 1 into it?

The engine is 2.2L.

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#1305002 - 12/08/08 10:28 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: pacem]
ThirdeYe Offline


Registered: 02/23/07
Posts: 7463
Loc: Walker, MI
What are your oil change intervals like? Is there any known leaks or consumption?
_________________________
99 Pontiac Firebird - 83k - Mobil 1 HM 10W-30/Carquest Blue 85040
95 Acura Integra LS - 215k - Havoline Synthetic 5W-30/Mobil 1 M1-104

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#1305003 - 12/08/08 10:28 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: pacem]
Steve S Offline


Registered: 01/20/03
Posts: 18449
Loc: East of IGO
What is wrong with the oil you have been using?
_________________________
Why do people post I want the best for my car,,, When there isn't anything that is the best on the car to begin with.

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#1305008 - 12/08/08 10:31 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: Steve S]
pacem Offline


Registered: 10/16/03
Posts: 461
Loc: MD
I just got this car. Know nothing about it other than it runs.

The oil seems dirty.

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#1305014 - 12/08/08 10:39 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: pacem]
ZZman Offline


Registered: 03/17/08
Posts: 4233
Loc: Michigan
Depends:

1. How important is it to you to run the best stuff?
2. How often do you want to change the oil?
3. Is cost concerns an issue?
_________________________
2002 Buick Regal GS (3.8 Supercharged) PP, Pure 1 filter
2008 Sebring Hardtop convertible (2.7) M1, Pure 1 filter.

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#1305017 - 12/08/08 10:42 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: pacem]
SuperDave456 Offline


Registered: 10/29/08
Posts: 2266
Loc: Dallas, Texas
I would go to the "Oil Additives" forum and read up about Auto RX.
Seems to be the Bees Knees around here. I am running a bottle of it through my car, my sister's car, and my father's car. Only a few hundred miles into the first application, and at least in my head my car runs better.

First thing I would do is change the oil, if you dont know what the previous owner did I would run Cheap dino oil and 3000 miles for the first oil change interval.

Then, if it was me, I would do an Auto RX clean and rinse cycle. But that is up to you.

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#1305022 - 12/08/08 10:46 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: SuperDave456]
Solo2driver Offline


Registered: 07/06/04
Posts: 1385
Loc: Houston, TX
I had a '98 Impreza with the same 2.2L and 150K miles (sold at 204K miles), ran various forms of Motul and Mobil1....the 2.2L is very easy on oil, just keep some in there and change at 5K you should be fine.....synthetics to 10K or so should be fine. The Subaru engines of that era seemed to like thicker 30-wt oils or 5w/10w-40, as mine did. M1 10w-40 High Mileage would be a perfect candidate to 10K mile changes, I think. Otherwise, nearly any oil will be fine in your engine.
_________________________
2012 Subaru WRX AWD: RP HPS 5w-30 8K mi
2011 Mazda 2 Sport: RP XPR 0w-20 5K mi
2003 Ford Escape V6 4WD: PHM 5w-20 165K mi


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#1305033 - 12/08/08 10:52 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: Solo2driver]
Bill in Utah Offline



Registered: 11/11/02
Posts: 12787
Loc: UT
Turbo? If not syn is not needed.

Just use 5w-30 and depending on your usage (that is more important than most anything else) we then can make suggestions on OCI.

Take care, bill

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#1305116 - 12/08/08 11:56 AM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: Bill in Utah]
Spartuss Offline


Registered: 12/16/06
Posts: 2057
Loc: Baltimore, Maryland
If you intend to keep the car for a long while, run 2 clean cycles of Auto-RX through it using conventional oil. Perform a few more oil changes with conventional oil after the treatment ends as cleaning will still continue, even after the rinse phase of Auto-RX is completed. If you have no leaks or consumption issues switch to a non-HM synthetic of your choice. Stick to the factory recommended 5/10w-40.


Edited by Spartuss (12/08/08 11:58 AM)
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#1305124 - 12/08/08 12:02 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: Spartuss]
meep Offline


Registered: 02/20/07
Posts: 2531
Loc: Southeast
owned a 2.2 '97.

avoid M1 5w-30. Ran mine on a strict M1 10w-30 diet w/ 10,000 mile oci until I sold it. Liked 10w-30.

Those cars are notorious for front crank seal leaks, believe it may have been recalled. Material wore quickly. I say this because if it leaks, don't blame the oil.

I'd pop a valve cover (pass side is easiest and easy) before adding any additives, including ARX. It might not need it. If it does have buildup, it will settle on the bottom of the cover and not around valve seals.

You may also experience pin/piston slap during warmup. Had it for years with 0 problems.

The 2.2 is a closed-deck motor and is very well-built. T-belt is a 60,000 mile interval. Oem H2O pumps seems to last 106,000 by a vast number of owners on other boards.

M
_________________________
2006 Tundra 2wd
2002 MDX (wifey!)
2003 town and country, in various state of repair

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#1305142 - 12/08/08 12:18 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: meep]
Solo2driver Offline


Registered: 07/06/04
Posts: 1385
Loc: Houston, TX
The non-turbo 2.2L is actually open-deck...the only fully closed-deck EJ22 was in the '91-'94 Legacy SS turbo and wagon turbo.

I really don't think that ARX is a necessity in this particular engine, they are very tough and not prone to any sludge or varnish buildup. I am running ARX in mine only to try to help a few seal leaks before replacing them.

Agreed, the Subie engines (turbo or NA) just don't like the M1 5w-30 for some reason.
_________________________
2012 Subaru WRX AWD: RP HPS 5w-30 8K mi
2011 Mazda 2 Sport: RP XPR 0w-20 5K mi
2003 Ford Escape V6 4WD: PHM 5w-20 165K mi


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#1305170 - 12/08/08 12:49 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: Solo2driver]
pacem Offline


Registered: 10/16/03
Posts: 461
Loc: MD
Thanks for the feedback.
I don't intend to keep it beyond about 2 years. I didn't pay very much for it at all so it's not a huge investment.

I get no piston slap or anything unusual.

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#1305185 - 12/08/08 01:05 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: pacem]
scoobie Offline


Registered: 10/17/08
Posts: 682
Loc: ontario canada
if your engine does not have piston slap, then you have a very good find, and it is worth looking after it. i use whatever oils i get on sale for my scoobie, supertech synthetic 5w30 is what i'd use if i wanted to baby it, or some other cheap synthetic. supertech conventional 5w30 is also good. in the spring, when it warms up, you can change to a supertech 10w30 synthetic. by then oil prices will have dropped considerably. a rebuilt 2.2 goes for about 3500$, this is not a cheap engine. people use it for their home made airplane projects, especially if it has a turbo.

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#1305204 - 12/08/08 01:36 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: scoobie]
JoeFromPA Offline


Registered: 02/06/08
Posts: 686
Loc: PA
One of my favorite articles was of a Porsche 914 owner who put a 2.0 liter WRX engine into it....he said it was consistent with the original Porsche design because it was flat-engined and similar in original displacement :)

And it made his car go like a bat out of [censored] with minimal modification.

Joe
_________________________
01 M5 - 116k

08 5-speed Legacy GT - 92k miles. Great car.

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#1305243 - 12/08/08 02:20 PM Re: Subaru Legacy with 145K miles - use Mobil 1? [Re: JoeFromPA]
dhise Offline


Registered: 12/07/06
Posts: 275
Loc: Detroit, MI
I didn't think the 2.2 is known for piston slap. Just keep fresh oil in it and don't let it overheat and it will last a very long, long time. It is an interference motor, so don't go past the recommended timing belt interval.

I have a '96 2.2 (non-interference) in my old '86 GL. It is generally regarded as the best motor subaru ever made. I run 5w-40 in mine.


Edited by dhise (12/08/08 02:22 PM)
_________________________
1986 Subaru GL 4x4 wagon, w/ej22, 207k miles
1999 Ford F150, 46k miles


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