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#4517222 - 09/15/17 04:35 PM What oil should I use?
NicaNica Offline


Registered: 09/15/17
Posts: 7
Loc: Illinois
Hi guys,

I am wondering if I should use High Mileage Synthetic Blend oil in my car. The car has been used on regular oil until now. Details below.

1. What kind of vehicle you have - Subaru Forester LL Bean 2006 / 181.000 miles
2. What your owner's manual says -- 5w-30 regular, or synthetic.
3. Where you live - Illinois, United States
4. How you drive (easy? hard? fast? slow?) - easy, not too fast
5. What your daily drive is like (short trips? long trips? city? highway?) - mostly long trips (around 3hrs), very little in city.
6. Whether your car has any known problems - it has a little bit of an oil leak, most probably due to a worn seal. Other than that is fine. I was thinking to put a synthetic blend, but I've been warmed it may cause the leak to expand. I was thinking also of a High Mileage version, due to the age of the car.

Thanks!

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#4517224 - 09/15/17 04:39 PM Re: What oil should I use? [Re: NicaNica]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2754
Loc: Wet side WA
NAPA has the Synthetic on sale right now for 3.49 a quart if you buy a case. Its the same as Valvoline full Synthetic and that's a pretty cheap OIC.
_________________________
2004 Toyota Corolla 121758
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4517227 - 09/15/17 04:43 PM Re: What oil should I use? [Re: NicaNica]
Alex_V Offline


Registered: 04/10/16
Posts: 1155
Loc: Campbellsville, KY
I put Valvoline Maxlife in most engines - don't even bother with VWB most of the time. With an interval of roughly what the mfgr. recommends it should keep the engine together long past the failure of components due to factors other than lubrication. Worry not about making the leaks worse - I've changed dozens and dozens and have not seen that happen yet.
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 112K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 167K
'67 Suburban, 350, 331K

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#4517250 - 09/15/17 05:20 PM Re: What oil should I use? [Re: NicaNica]
Warstud Offline


Registered: 09/02/05
Posts: 5397
Loc: MIchigan
Magnatec Synthetic Blend is the Best. thumbsup

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#4517254 - 09/15/17 05:27 PM Re: What oil should I use? [Re: NicaNica]
Floydian Offline


Registered: 09/13/17
Posts: 46
Loc: Outside U.S
Where is the oil leak located? I would definitively use fully synthetic.

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#4517270 - 09/15/17 05:51 PM Re: What oil should I use? [Re: Floydian]
NicaNica Offline


Registered: 09/15/17
Posts: 7
Loc: Illinois
I don't know exactly, it's in the front under the driver's seat it seems. My mechanic says that he needs to degrease the engine, and under the car, and then see where it comes from. It's not a big leak, and sometimes it leaks, sometimes it doesn't. In a month, I need only once to top it (I keep a 1 quart bottle in the trunk).

The thing is, some mechanics (including mine), suggested not to use synthetic because they say, it may clean up the sludge that built up inside, uncovering the leak spot even more. And some mechanics also said that in that high mileage engine, using synthetic may cause it to burn the oil.

I was just thinking to use a High Mileage synthetic blend (not full synthetic). What is your experience with synthetic oil in an old car that has been used all its life on regular oil?

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#4517284 - 09/15/17 06:12 PM Re: What oil should I use? [Re: NicaNica]
Alex_V Offline


Registered: 04/10/16
Posts: 1155
Loc: Campbellsville, KY
That it has to be pretty darn sludgy for those mechanics' theories to be true. I doubt your engine is that bad, and if it is, shame on you. Not even considering the HM additives that counteract any removing of deposits that would open up leaks.
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 112K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 167K
'67 Suburban, 350, 331K

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#4517292 - 09/15/17 06:24 PM Re: What oil should I use? [Re: Alex_V]
NicaNica Offline


Registered: 09/15/17
Posts: 7
Loc: Illinois
I just bought the car 2 months ago, and I drove it about 2000 miles. The next oil change is coming soon, probably in a week-two, since I am driving about 500-600 miles per week. I don't believe the engine is that dirty inside, because it performs and sounds very snappy. Actually it is really really silent and smooth, about the same as my gf's 2016 Kia Rio with only 16k miles.

But then again, I want to keep the car for as long as possible and most mechanics seem to agree to just keep it on regular oil if it doesn't do any harm and if performs well with it. I just wanted to see what other people recommend and what has been working for their cars. I'll probably try synthetic blend on the next oil change, and see how it goes.

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#4517304 - 09/15/17 06:45 PM Re: What oil should I use? [Re: NicaNica]
SR5 Online   content


Registered: 07/07/15
Posts: 4467
Loc: Down Under
Valvoline MaxLife 5W30 synblend in the red bottle. A great HM oil that offers everything you want.
_________________________
Penrite Vantage 10W40 SN & A3/B4 + Wesfil-Cooper Z154

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#4517311 - 09/15/17 06:56 PM Re: What oil should I use? [Re: NicaNica]
Floydian Offline


Registered: 09/13/17
Posts: 46
Loc: Outside U.S
Clearing up sludge is good for your although oil consumption may increase. Unless you don't top it up oil consumption won't kill your engine, but sludge will definitively will.

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#4517322 - 09/15/17 07:06 PM Re: What oil should I use? [Re: NicaNica]
K23Turbo Offline


Registered: 02/05/09
Posts: 224
Loc: Pennsylvania
Another vote for the Valvoline Maxlife Synblend 5W30.

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#4517339 - 09/15/17 07:21 PM Re: What oil should I use? [Re: NicaNica]
JeepWJ19 Offline


Registered: 09/09/15
Posts: 933
Loc: PENNSYLVANIA
Mobil 1 HM 5w30

Was recently (may still be) on Rollback at walmart
_________________________
2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]

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#4517341 - 09/15/17 07:24 PM Re: What oil should I use? [Re: NicaNica]
HM12460 Offline


Registered: 05/26/07
Posts: 2072
Loc: West Michigan
Another vote for Valvoline Maxlife. Your car is an ideal candidate for this quality oil.
_________________________

2017 GMC Terrain
"Little Jimmy"



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#4517348 - 09/15/17 07:33 PM Re: What oil should I use? [Re: HM12460]
NicaNica Offline


Registered: 09/15/17
Posts: 7
Loc: Illinois
For all of you who voted for Valvoline's Max life syn blend - what do you think about Castrol's HM syn blend (green bottle), compared to Valvoline's? I found it near me at a discount, but both normally have the exact price (at least at the Autozone near me).


Thank you all for suggestions!

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#4517375 - 09/15/17 08:29 PM Re: What oil should I use? [Re: NicaNica]
dubber09 Offline


Registered: 02/09/17
Posts: 142
Loc: Vancouver, Canada
Go with HM oil of same 5w-30 for winter, change to HM 10w-30 in the spring.

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