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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: 1721
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: 1117
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: 14680
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.
_________________________
17 Forester 6K M1 AFE 0W20
12 Accord LX 69K SS 0W20
09 Forester 95K M1HM 10W30
01 Focus ZX3 118K PP 5W20
96 Accord LX 104K T5 10W30
95 BMW 318 163K

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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: 742
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: 2747
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: 2546
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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