Which amsoil synthetic to run??15w40 diesel and marine

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Feb 8, 2009 | 09:37 PM

#16

woodrep

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Joined: Jun 2007

Posts: 468

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From: OKC

AME 15w40 here. Great stuff.

Feb 9, 2009 | 01:36 PM

#17

DBLR

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Joined: Jun 2006

Posts: 2,423

Likes: 1

From: Forest Grove, Oregon

I run Amsoil 5w30 HDD year round. I saw an increase in mpg every time I switched from 15w40 Delvac to 5w40 synthetic Rotella to Amsoil 5w30 HDD.

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