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Using 0W40 instead of 0W20 oil on the 2013 2.5 OB

48005 Views 25 Replies 17 Participants Last post by  avenger09123
Hi friends,

Possibly a dumb question (as I for some reason cannot fully wrap my head around the oil viscosity thingy), but my 2013 2.5 Prem CVT manual recommends 0W20 synthetic oil. If I was to use Mobil 1's 0W40 oil instead, would it do any harm, either in short run and/or over time?

I currently have only a few hundred miles on my 2013 OB, but plan on doing first new car oil/filter change around 1000 mile mark.

plex :cool:
1 - 4 of 26 Posts
That is MUCH thicker than what it calls for.

I would not use it.
To be fair, the FB series engine has been 0w20 from the get go, it isn't a back spec type deal.
Any 0w20 that meets API SM or SN specs will be fine. Dealer oil can be very expensive.
What oil does the Forester turbo run, anybody know? I am guessing a little thicker than the 20 weight...
Synthetic 5w30.
1 - 4 of 26 Posts
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