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Oil

What Brand of Oil and Filters Should You Use on Your Boat?

By Capt. Richard Thiel | Posted August 2015

How closely should your oil match your engine?

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Are Synthetic Engine Oils Right for Your Boat?

By Capt. Richard Thiel | Posted November 2013

Capt. Richard Thiel investigates whether the high-tech, synthetic engine oils are all they’re cracked up to be—particularly for marine engines.

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