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McFly
Last seen: 1 week 4 days ago
Joined: 10/22/18
Posts: 145
Engine Oil type to use?

There's a great article on the site for changing your oil for newbies (like me). The author uses 10-w30. But I see diesel motor oil on the shelf too.

What kind oil are you all putting in the M-35BC?

Mike

Jackfish Girl, 1999, C36 MKII, Tall Rig, Wing Keel, In-mast furling, Phinneys Harbor, Bourne, MA

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Jackfish Girl, 1999, C36 MKII, Tall Rig, Wing Keel, In-mast furling, Phinneys Harbor, Bourne, MA
Tomspo1's picture
Tomspo1
Last seen: 2 months 4 days ago
Joined: 10/5/19
Posts: 4

I use Rotella T 15-40. 

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sidthekid
Last seen: 14 hours 10 min ago
Joined: 6/1/16
Posts: 14

Our yard recommnends Rotella T4 15W-40 as well.(upper Chesapeake)

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Bill & Barb
s/v Northern Lights
2002 Catalina 36 MKII #2086
Rock Hall, MD
Northern Chesapeake
McFly
Last seen: 1 week 4 days ago
Joined: 10/22/18
Posts: 145

Thanks guys, one last question. The westerbeke Universal manual recommends not mixing Brands because of the combination of the different additives that each brand may use. I will pump out as much as I can, but from reading it seems that most people only get about three and a half quarts out of the engine leaving a 1/2 to a full quart behind. You think I should be concerned with adding Rotella to the remnants of last year's Valvoline? My thought is since I change it annually and I don't achieve a hundred hours anyway, the chemical combination damage would be minimal. Curious The Forum thoughts...

Mike

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Jackfish Girl, 1999, C36 MKII, Tall Rig, Wing Keel, In-mast furling, Phinneys Harbor, Bourne, MA
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Haro
Last seen: 2 hours 11 min ago
Joined: 11/7/14
Posts: 250

One point that has not been mentioned is to use engine oil that is for diesel engine.

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