Don't use boat motor mix?

Reply

  #1  
Old 09-27-14, 08:07 AM
Member
Thread Starter
Join Date: Nov 2007
Location: MI
Posts: 2,527
Don't use boat motor mix?

While fiddling around with a garage-sale chainsaw I downloaded and read the old manual. In it I was surprised to read the caution NOT to use BIA marine oil/gas mix in the saw because it doesn't have the necessary additives for an air-cooled engine.
I've never seen a warning like this and have been running my chainsaws, trimmers and outboards off the same 40:1 mix of synthetic marine oil/gas for years.

Can this cause damage. .. or is this an obsolete warning that's not true for modern marine oils?
 
Sponsored Links
  #2  
Old 09-27-14, 10:24 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,819
I have heard the same thing, and long-term it may make some kind of difference. I haven't known of any problems caused by using it, but who knows. I'm sure the formulation is different, since air cooled engines run hotter.
 
  #3  
Old 09-27-14, 11:37 AM
Forum Topic Moderator
Join Date: Oct 2002
Location: Hamilton County, Ohio
Posts: 4,288
Just happened to have my Poulan handbook on my desk. It says " -- mixed with a good quality synthetic 2 cycle air cooled engine oil ---". A few sentences later it says" DO NOT use automotive or boat oil". Book and saw circa 2006.

I have also used 2 cycle oil in all 2 cycle engines when I still ran an outboard motor, but now follow the rules.
 
  #4  
Old 09-27-14, 03:13 PM
Member
Join Date: Dec 2006
Location: Canada
Posts: 528
My opinion is that it is not too difficult to store another container of oil. I have 10W30 synthetic for my lawn tractor and lawn mower. 2 stroke oil for my 2 stroke weed whacker and 2 stroke oil for my outboard. I have some 5W20 for my car and I also have outboard gear oil and chainsaw oil. In the end, you are going to have a fairly large number of different types of oil, so you have to know what you are using the oil for and grab the right one. Not too difficult. I have never grabbed the wrong oil and if you have, it is not the oils fault.

The 2 stroke air cooled oil is not any more expensive then the outboard oil and all of them will last a really long time (I know my expiry date will come before my oils and I am 49). So I would suggest you use the recommended oil.
 
  #5  
Old 09-27-14, 09:09 PM
Member
Thread Starter
Join Date: Nov 2007
Location: MI
Posts: 2,527
Oil Life isn't the issue -- it's the shelf life of the gas. A gallon of gas for just chainsaws and trimmer could last me years so I like to use the boat mix because it's fresh.

Jeez I thought I had a PLAN. Even bought a Lawn Boy 2 cycle mower so I would only need to keep one type of gas on hand.
 
  #6  
Old 09-28-14, 04:35 AM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA
Posts: 43,829
I always add stabil to my 2 cycle gas if I think it might be awhile before I use my chainsaws again ..... but I can't imagine ever being able to hang onto a gallon of any type gas for a year - I must have too much to do
 
Reply

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes