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Old 08-19-2014, 07:31 PM   #18
geeman789
Scooby Newbie
 
Member#: 330690
Join Date: Aug 2012
Chapter/Region: W. Canada
Location: Canada
Vehicle:
2011 2.5 HB
Blue

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Quote:
Originally Posted by bluesubie View Post
Correct for the Specifications section. The Maintenance and service section has the comment I am referring to. See 11-15: http://techinfo.subaru.com/proxy/765...14ASTIS_17.pdf Not that the owner's manual is supposed to make sense or anything. -Dennis Sent from my iPhone using NASIOC
It is my understanding that because of CAFE, a manufacturer is STRONGLY DISCOURAGED from recommending any oil grade other than that used for the actual mileage testing. Hence the very vague higher viscosity in hot weather... note in the manual.

A case of " read between the lines..."

My 2011 manual, however, CLEARLY states thicker oil for hot / heavy-duty use... 5/10w30 for normal, coolish conditions, 5/10w40 for hotter conditions, and up to 20w50 for desert or extreme use.

They used to say it, now they kind of dance around it a little...
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