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#1660235 - 11/06/09 12:55 AM best synthetic oil for winter???
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
i'm trying to decide what oil to put in my 1997 e320 which has a L6 engine. it has over 150k miles, and runs smooth as it did when new, but now that is getting cold i can hear a few tick-ticks for a few seconds at start up. i've been using rotellat t 5w40, and i'm thinking this oil is maybe too thick. trying to decide which oil to use next oil change: mobil1 0w40 or valv. synpower 5w30?

also i plan on adding a can of lubro moly MOS2 antifriction additive. what do you guys think and recommend?


Edited by moss (11/06/09 12:56 AM)

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#1660239 - 11/06/09 01:01 AM Re: best synthetic oil for winter??? [Re: moss]
hpichris Offline


Registered: 06/13/09
Posts: 1657
Loc: Eden Prairie MN
Mobil OW-40

Otherwise, if it's available around you. Go GC. (Castrol Syntec 0W-30 aka German Castrol)
_________________________
Mazda RX-8 Shinka - Valvoline WB 5W-30
Jaguar XK- Mobil 1 5W-20
Cadillac CTS4 - Mobil 1 5W-30
Saab 9-3 Aero - Mobil 1 5W-30

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#1660248 - 11/06/09 01:14 AM Re: best synthetic oil for winter??? [Re: hpichris]
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
thank you for the quick reply. you think mobil1 0w40 would make a big difference at cold start up than rotella 5w40? would a 5w30 flow better or the same as 0w40?
sorry about my ignorance towards oil grades.

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#1660253 - 11/06/09 01:25 AM Re: best synthetic oil for winter??? [Re: moss]
lipadj46 Offline


Registered: 08/07/09
Posts: 1223
Loc: Western NY
The mobil is definitely thinner than the rotella for cold startups, also it shears down to a 30 weight in short order. On whether an oil is thinner you would have to check the viscosity and pour point measures
_________________________
2002 Toyota Corolla, 65k miles, Mobil 1 0w30
2004 WV Passat Wagon 94k Miles, Rotella T6
2002 Land Rover Discovery Totaled RIP

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#1660276 - 11/06/09 01:51 AM Re: best synthetic oil for winter??? [Re: lipadj46]
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
between mobil1 0w40, mobil1 10w30 and valvoline synpower 5w30, which one would flow better at cold startups?

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#1660286 - 11/06/09 01:55 AM Re: best synthetic oil for winter??? [Re: moss]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
Originally Posted By: moss
between mobil1 0w40, mobil1 10w30 and valvoline synpower 5w30, which one would flow better at cold startups?


What about 0W30? that would probably be best for cold start.

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#1661289 - 11/06/09 06:01 PM Re: best synthetic oil for winter??? [Re: mechanicx]
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
i didn't see any synthetic 0w30 on the store's shelves, that's why i want to chose between valvoline synpower 5w30, mobil1 10w30 and mobil1 0w40. hopefully by switching from rotella t 5w40 to another oil i can get rid of the tick=tick noise at cold starts.

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#1661301 - 11/06/09 06:09 PM Re: best synthetic oil for winter??? [Re: moss]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
M1 0-40. For a bunch of cold weather reasons.
But don't expect any oil to cure a mechanical problem.
Any extra flow when cold MAY help, but it may not.

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#1661307 - 11/06/09 06:12 PM Re: best synthetic oil for winter??? [Re: moss]
hpichris Offline


Registered: 06/13/09
Posts: 1657
Loc: Eden Prairie MN
Originally Posted By: moss
i didn't see any synthetic 0w30 on the store's shelves, that's why i want to chose between valvoline synpower 5w30, mobil1 10w30 and mobil1 0w40. hopefully by switching from rotella t 5w40 to another oil i can get rid of the tick=tick noise at cold starts.


If no luck on the GC. Then go M1 0W-40
_________________________
Mazda RX-8 Shinka - Valvoline WB 5W-30
Jaguar XK- Mobil 1 5W-20
Cadillac CTS4 - Mobil 1 5W-30
Saab 9-3 Aero - Mobil 1 5W-30

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#1661329 - 11/06/09 06:25 PM Re: best synthetic oil for winter??? [Re: hpichris]
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
thanx

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#1661332 - 11/06/09 06:27 PM Re: best synthetic oil for winter??? [Re: moss]
hpichris Offline


Registered: 06/13/09
Posts: 1657
Loc: Eden Prairie MN
Also, GC is pretty much only available at Autozone. (If you haven't tried.)
_________________________
Mazda RX-8 Shinka - Valvoline WB 5W-30
Jaguar XK- Mobil 1 5W-20
Cadillac CTS4 - Mobil 1 5W-30
Saab 9-3 Aero - Mobil 1 5W-30

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#1661359 - 11/06/09 06:44 PM Re: best synthetic oil for winter??? [Re: hpichris]
moss Offline


Registered: 05/21/08
Posts: 83
Loc: south dakota
i haven't tried autozone yet, will tomorrow, thanx again.

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#1661360 - 11/06/09 06:45 PM Re: best synthetic oil for winter??? [Re: hpichris]
RISUPERCREWMAN Offline


Registered: 07/29/08
Posts: 1042
Loc: RHODE ISLAND
I just put some Castrol Edge 5w-30 in my DD 93 Toyota Camry V6 LE 110K miles!
_________________________
2014 Ram 2500 HD 5.7 Hemi 4x4 10K miles
8'Boss SuperDuty Plow
2015 Harley Davidson Ultra Limited 3K miles
2009 Toyota V6 XLE Camry 55K miles

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#1661362 - 11/06/09 06:46 PM Re: best synthetic oil for winter??? [Re: RISUPERCREWMAN]
buster Offline


Registered: 11/16/02
Posts: 30257
Loc: NJ
Mobil 1 and Redline.
_________________________


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#1661376 - 11/06/09 07:04 PM Re: best synthetic oil for winter??? [Re: buster]
mechanicx Offline


Registered: 10/23/09
Posts: 8576
Loc: Ohio
I looked up Mobil 1 5W-30 and 0w-40 on their site and the 5W-30 had a quite a bit lower viscosity at 40C than did the 0W-40:

64.8vs.78.3

even more surprising the 10W30 had a lower viscosity at 40C and 100C than even the 5W30:
62

I guess this is because 10W30 has a lower viscosity index than 5W30 shrug.

So I think if you want a lighter viscosity when cold a 10W30 5W-30 or 0W-30 would be better. Or better yet look up the average viscosity for the common brands of oil choices available. I'm starting to come to the conclusion that 5w20 and 0W20 is the bomb when it comes to cold flow.


Edited by mechanicx (11/06/09 07:15 PM)

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