Marine Oil vs Auto Oil - The Outdoor Community
LinkBack Thread Tools
post #1 of 5 (permalink) Old 03-06-2016, 09:32 PM Thread Starter
Regular Member
Join Date: Oct 2014
Location: State College
Posts: 1,052
Back To Top
Marine Oil vs Auto Oil

Is there really a difference between marine 10w40 and auto 10w40? Never really thought of using a specific marine oil for my boat before...

Blood Trail 13 is offline  
Sponsored Links
post #2 of 5 (permalink) Old 03-06-2016, 10:08 PM
Senior Member
Join Date: Nov 2005
Location: Carbon County Pa/Kidder Township
Posts: 19,347
Back To Top
Re: Marine Oil vs Auto Oil

For my small boat I run Mercury's Quciksilver 25W40 Synthetic oil.
It costs more but sure beats issues with the oil thinning out on hot summer days.
You can use regular automotive oil in the boat but I stick with the Merc oil for peace of mind.
The bigger boat I let the dealer service it so I have no idea what type oil they stick in the Verado's.

My ability to remember lyrics from songs of the 60's far exceed my ability to remember why I walked into the kitchen
Birch812 is offline  
post #3 of 5 (permalink) Old 03-08-2016, 11:19 PM
Regular Member
Join Date: Nov 2008
Location: PA
Posts: 1,855
Back To Top
Re: Marine Oil vs Auto Oil

I asked the same question somewhere else recently and someone brought up a good point.. I run my jet around 45-5500 rpms.. Cars don't cruise that high.. It costs me an extra $30 to use the Yamaha oil but I don't want to risk it
lwrsusq is offline  
Sponsored Links
post #4 of 5 (permalink) Old 03-10-2016, 04:16 PM
Part of the Community
Join Date: Aug 2009
Location: York County
Posts: 148
Back To Top
Re: Marine Oil vs Auto Oil

its very high quality synthetic, is it different, hard to say, good one for the boat shop mechanic.

Other thing to think about most recommend 100-200 hours between changes. i believe my Yam 115 is 200 hours in the manual. I fish a ton and only run about 75 hours a year. I still change it usually once per season. So for only one change its worth the extra cost i would say.
PaTrophyMan is offline  
post #5 of 5 (permalink) Old 03-11-2016, 05:43 PM
Part of the Community
Join Date: Jun 2013
Location: 2b/2f
Posts: 155
Back To Top
Re: Marine Oil vs Auto Oil

I was told the difference is because boats are could with water and cars are colded with antifreeze. They run at different temperatures.
camptj is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Outdoor Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome