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#2299600 - 06/27/11 04:04 PM Re: Thinnest 5w30 Synthetic for Winter [Re: renegade_987]
sicko Offline


Registered: 09/22/08
Posts: 1716
Loc: Virginia
Sometimes it helps not think of it as oil getting thin as it warms, but rather how thick it gets when it cools. 0w-30 in the extreme colds, should be thinner than a 5w-30. So at operating temps, they're the same 30 weight oil, but as they cool one gets thicker than the other.

I don't want to sway you one way or another on brands, but I used M1 0w-30 for the past couple of years b/c I scored a good deal on it at the time so that's the one I've looked at more closely when people post info about a 0w oil. Check out the UOA section for M1 0w-30 test results, even in areas of extreme cold it performs way better then just "adequate".

Again, don't mean to sway you on a specific brand, so let me add this. I recently switched to Valvoline (saving my last 0w-30 oil change for the winter), and the engine is slightly quieter and slightly smoother at high RPMs than it was with M1. But that may be a placebo, or may be a characteristic of the oil, either way I have no reason to doubt that the M1 was protecting my engine just fine.

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#2299611 - 06/27/11 04:15 PM Re: Thinnest 5w30 Synthetic for Winter [Re: addyguy]
coffee Offline


Registered: 03/11/07
Posts: 1116
Loc: Chandler, Arizona, USA
Originally Posted By: addyguy
QSUD syn 5W-30 has good winter cranking numbers.


+1 This stuff has always seemed thin and economical so you really cannot go wrong with it. Good oil at a great price!


Edited by coffee (06/27/11 04:16 PM)
_________________________
Java Joe
1994 Volvo 945
Motorcraft 5w20

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#2299689 - 06/27/11 05:58 PM Re: Thinnest 5w30 Synthetic for Winter [Re: renegade_987]
fdcg27 Offline


Registered: 09/25/09
Posts: 13706
Loc: OH
PP will be a little cheaper, and is good stuff.
I saw no difference in a cold start last winter on a -10F morning between our '99 Accord on M1 0W-30, our Impreza and '97 Accord on PP 5W-30 and our Forester on GC.
I think you'd be fine with either oil.
Incidentally, the only reason I use 10W-30 at all is that you can sometimes pick it up dirt cheap, so two cars are on it now.
The Forester will get FAR VR1 10W-30 for its next change, in a couple of weeks.
_________________________
12 Accord LX 69K SSO 0W-20
09 Forester 83K PU 10W-30
01 Focus ZX3 112K M1 5W-20
96 Accord LX 104K T5 10W-30
95 BMW 318iC 159K Delvac 15W-40

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#2300011 - 06/28/11 02:09 AM Re: Thinnest 5w30 Synthetic for Winter [Re: fdcg27]
merdog Offline


Registered: 04/20/11
Posts: 81
Loc: Washington
Go over to youtube and type in motor oil cold and ck out the videos. These guys are testing flows at -40 nest stuff to see what flows at that temp. Most of it is in Russian but you will get the drift real fast....
_________________________
2001 Dodge Caravan, PYB & MANN Filter
2005 Honda CRV, PYB, Wix filters
2006 Ford Tarus, PYB, Wix filters
2012 Toyota Camry, PP, Toyota Filters

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#2300918 - 06/28/11 08:51 PM Re: Thinnest 5w30 Synthetic for Winter [Re: renegade_987]
OldCowboy Offline


Registered: 05/28/11
Posts: 734
Loc: SW Missouri
Ford specifies 5W-20 for your F-150. Why wouldn't you use this????

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#2301444 - 06/29/11 11:58 AM Re: Thinnest 5w30 Synthetic for Winter [Re: OldCowboy]
Oregoonian Offline


Registered: 02/06/10
Posts: 2726
Loc: Bend, Oregon
Originally Posted By: OldCowboy
Ford specifies 5W-20 for your F-150. Why wouldn't you use this????

I have the same question.......
______________________________________________
03' Ford Focus (2.3L Duratec PZEV) / 98K miles
PP 5w20 / Puro PureOne / OCI: 8,000 +/-
_________________________
03' Ford Focus SE(2.3L Duratec PZEV)/ 140K +
Pnz. Ultra 0w20 / Fram 'Ultra'/ OCI: 8000 +/-
ATF: Mercon V w/Lubegard Red


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#2302683 - 06/30/11 03:57 PM Re: Thinnest 5w30 Synthetic for Winter [Re: renegade_987]
SubLGT Offline


Registered: 01/31/06
Posts: 2410
Loc: Idaho
Originally Posted By: renegade_987
................ I just looked at my notes and realized my next change will be in about 2 weeks, not August. Will either use PP 5w30 or AFE 0w30, whichever is cheaper. Thanks so much for your help, I appreciate it


Fresh oil has better cold temperature pumpability than used oil. For the best winter performance, do your oil change at the beginning of winter.

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