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Old 11-02-2016, 04:10   #1
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15W-40 vs 15-40W?

This might be a dumb one but could not find an answer via Google. I noticed today that the Yanmar engine manual indicates 15W-40 oil for the engine. My Northern Lights genset manual indicates 15-40W. Are these the same? Thanks
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Old 11-02-2016, 04:30   #2
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Re: 15W-40 vs 15-40W?

Only time I've seen 15-40W written down is when it's been a misprint/mistake.
I still looked it up just to be sure...
Google shows a couple of results, one from Amazon for Brookstone 15-40W.
When you look at the image of the container it clearly shows it to be 15W-40.

15W-40 will be correct, be sure to check each engine manufacturer's full specification though.

I'm no expert but someone here will be.
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