which one ????

mer

Joined
Dec 7, 2008
Messages
30
Location
ILL
I am a M1 user, what wght. oil 5w20 or ow30 is better for cold weather use in my 2003 ford f-150 5.4 ????
 
Joined
Jun 6, 2006
Messages
5,172
Location
Great White North.. eh
the 5w20 is thinner at all temps, and will therefore flow better (better being relative) in cold temps. If your manual calls for a 20 weight and you want the best cold weather performance, then use the 20 weight.
 
Joined
Mar 17, 2008
Messages
7,248
Location
Michigan
The 5w-20 will work fine for your winters. Now our brothers in Canada might like the 0w-30 better.
 
Joined
Jul 7, 2007
Messages
6,931
Location
NH
I believe the engine is spec'd for 5W-20 so stay with a 20 weight. If you want to run a 0W during the dead of winter run 0W-20.
 
Joined
Jan 3, 2009
Messages
14,875
Location
Illinois
Like you I live in Illinois and I use M1 50-30 EP in my 07 Focus, And either M1 5-30 or 10-30 in my Merc. Grand Marq. Both work well.
 
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