[hypoxia]

I use 15W-40 same as in the Cummins engine. 
The Yanmar TNV manual specifies:
10W-30 good between -4F to +86F
15W-40 between about +5F to +100F
20 +32F to +68F
30 +50F to +86F
40 +68F to +104F

TNV Operation Manual A4.pdf Size: 9.53 MB  Downloads: 4

Yanmar Servicemanual.pdf Size: 22.37 MB  Downloads: 4

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