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Premium Member
2006 Outback Sedan LLBean
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625 Posts
Discussion Starter #1
My wife's got a 2015MY (bought in May 2014) Forester 2.5 recommended oil is 0-20 It's out of warranty and has only 35,000 miles
My 2006 Outback 3.0 recommends 5-30 obvi out of warranty and has 135,000 miles
Other 2015 models 2.0 and 3.6 recommend 5-30

I do oil changes together. To simplify, can I either put 0-20 in my 3.0 or 5-30 in her 2.5?

Both engines need over 5 quarts so I'd be getting 12qts at a time I guess or 3x 5qt jugs.

Thoughts?
 

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Registered
2005 Outback VDC limited 3.0r
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869 Posts
Look in the owners manual of the 2.5, it may say 5w-30 is fine. Would not run 0w-20 in the 3.0. 5w-30 is the lightest you want to go with the tolerances it was designed for. Some people/tuners even recommend going up to 10w-30 or 40. I've trusted what the millions spent in r&d/engineers designed the engines to operate on and never have had a oil related failure. Despite what people think, they don't design the engine to not last(oiling wise). That is very risky for business.
 

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Super Moderator
2016 3.6 Limited with ES
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2,692 Posts
You can go up in viscosity but going down is not a good idea. Settle on 0/5w-30 for everything and sleep well.
 

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Premium Member
2006 Outback Sedan LLBean
Joined
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625 Posts
Discussion Starter #5
I had read something about the 0-20 in the 2015 2.5 was to get that last little bit of MPG. Made sense to me. 5-30 it is for both cars. Thank you all.
 
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