Quote:
Originally Posted by x808drifter
You keep throwing that graph up here but I have to ask where it's from.
Who made it?
The only other place I can find it is subaruoutback.org in a single post.
No reference to who came up with these numbers.
I also can find no other info online backing any of these numbers up.
Or for that matter, how thick any grade of oil should be above operating temps, let alone 270F.
Until then I am of the thought, run what the manual says until an oil analysis says otherwise.
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You can graph it yourself on Widman.