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#912969 - 06/03/07 07:20 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: sw99]
Auto-Union Offline


Registered: 02/01/06
Posts: 3833
Loc: NEPA
10w-40 is the ticket in many instances.

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#912970 - 06/04/07 12:14 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Auto-Union]
Spartuss Offline


Registered: 12/16/06
Posts: 2077
Loc: Baltimore, Maryland
hopefully the 10w-40 helps the oil burning issue a bit. The car is also on its second auto-rx clean phase with that oil.
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#912971 - 06/04/07 01:15 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Gene K]
glenncof Offline


Registered: 05/31/06
Posts: 1051
Loc: Northern California
Quote:

Yep... My Cousins uses 1 Qt every 1200 mi and gets SuperTech 10W-30 out of a 5 Qt Jug. He changes the Filter Every 12 Months (Pure One) and drains it every 3 years. After all its a self changing automobile (5 Qt Every 6000 mi).

EDITED: To correct my Math!




Sorry to say...I did something like this at one time...too bad the sludge doesn't get consumed with the oil.

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#912972 - 06/04/07 03:14 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: glenncof]
Boomer01 Offline


Registered: 01/16/07
Posts: 123
Loc: Wyoming
Go out & buy the 5-30 and change it for her. She'll love you for it. Next thing you know you'll be trading it in on a minivan.

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#912973 - 06/04/07 03:19 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Spartuss]
ARB1977 Offline


Registered: 06/12/05
Posts: 4579
Loc: North Texas
Quote:

My girlfriend owns a 1997 Saturn SL2 that requires 5w-30. Her mechanic always puts in 10w-40 bulk oil every 3k she gets an oil change. The mechanic says there is nothing wrong with 10w-40 instead of 5w-30. Is this true?



5W30 or even 0W30. If its buring any oil try some Castrol Syntec 0W30 its a tad thicker than normal 30W oils.
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#912974 - 06/04/07 07:20 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: ARB1977]
Spartuss Offline


Registered: 12/16/06
Posts: 2077
Loc: Baltimore, Maryland
the vehicle has 143k on it. it is def. burning oil as I top it off for her with 5w-30. are there long term effects in using 10w-40 instead of 5w-30. Most internet research I have done shows no negatives in warm climates. In the winter a thinner oil is preferred due to better start up flow qualities.

p.s. no way in - - - - - - am I getting a minivan any time soon even though the toyota sinenna awd vans drive great and are a great alternative to suv's and provide more room and comfort for the passengers.
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#912975 - 06/04/07 07:39 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Spartuss]
Camu Mahubah Offline


Registered: 02/04/05
Posts: 3048
Loc: the Sandhills of Nebraska
Maryland gets cold in the winter, why not use 5w-40. It is out there if you look. Try Valvoline Synpower.
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#912976 - 06/04/07 07:45 AM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Spartuss]
Merkava_4 Offline


Registered: 01/30/07
Posts: 10536
Loc: Clovis, CA
Just think of 10W-40 as being along the same lines as an adhesive with gap filling capability.

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#912977 - 06/08/07 09:37 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Merkava_4]
Spartuss Offline


Registered: 12/16/06
Posts: 2077
Loc: Baltimore, Maryland
so why would one use a 5w-30HM vs. a 10w-40 which seems to do the same thing?
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#912978 - 06/09/07 11:36 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: ARB1977]
HM12460 Offline


Registered: 05/26/07
Posts: 1561
Loc: West Michigan
time for a new mechanic.
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1997 Mercury Cougar

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#912979 - 06/09/07 11:44 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: HM12460]
onion Offline


Registered: 02/04/07
Posts: 2097
Loc: kansastan
That mechanic is protecting his own interests and the girlfriend's interests. It absolutely will not hurt anything to run 10w40... and considering that we're talking about a Saturn with a female driver (who, by definition, does NOT check the oil), it could prevent an engine failure. I think she's taking her car to a wise man.
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#912980 - 09/15/07 05:37 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: onion]
Spartuss Offline


Registered: 12/16/06
Posts: 2077
Loc: Baltimore, Maryland
Update:

The car seems to be burning less oil with 10w-40 and 1500 miles into the oil change, the oil is still between the full and low mark. This is pretty good for a Saturn that is prone to oil burning by nature.

On another note, what I find strange is that the shop where I take this Saturn to only uses 10w-40 bulk. They put this in vehicles that spec 10w-30, 5w-30, 5w-20, etc...

It seems the customers never question this. By the way, this is at a Shell station so I'm assuming it is Shell 10w-40 formula in the tank?
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#912981 - 09/15/07 06:38 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Spartuss]
mazduh30 Offline


Registered: 02/19/06
Posts: 306
Loc: BC Canada
My wife owns a 94 Saturn (96,000 miles). I have always and still use 5W30 in it. I am one of the lucky ones, it doesn't burn oil.

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#912982 - 09/15/07 07:21 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: mazduh30]
Triple_Se7en Offline


Registered: 12/04/04
Posts: 6581
Loc: 1/2 hr. north of Detroit
For Maryland's winter, I would find another station to change my oil - then not exceed 10W-30 viscosity for the winter months. Most wear is at startup. You can use 10W-40, but it's more beneficial not to. I would rather have a little consumption - than increased parts wear.

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#912983 - 09/15/07 07:35 PM Re: 10w-40 instead of 5w-30 okay mechanic says? [Re: Triple_Se7en]
Auto-Union Offline


Registered: 02/01/06
Posts: 3833
Loc: NEPA
10-w40 is pretty good for MD winter, although changing to 5w-30 for winter is a bit preferable. If the mechanic is "into" the oils viscs he or she uses, I'm shure they would be fine with putting a 5w-30 hi-miles for her, if requested & provided.

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