Lower unit oil flush?

[richardbrown67@yahoo.com]

I have a 1971 50hp with electric shift which still works well.

I have used standard-fare 80w90 marine gear lube in it for 9 years or more. I just found out that Johnson makes a special oil for those electric shift motors, so I plan to change it out.

Question: should I just change the oil like normal, or, should I try to flush out the lower by filling it with light-weight car oil, run lightly on the hose for a short time, drain, and then refill with the Johnson oil? (This has been recommended to me, but I wanted to ask around first.)

Thanks for your opinions.....

Richard

 

[1946Zephyr]

Re: Lower unit oil flush?

You should be able to let it drain thoroughly and refill it with the correct oil.

 

[gazza2007au]

Re: Lower unit oil flush?

i have the same engine and i have a bottle of Evinrude/Johnson Premium Blend u will need 2 bottles as 1 bottle is 473mls/16oz i think it says in the manual the lower unit requires 750mls where as when i done mine it used 650mls

 

[samo_ott]

Re: Lower unit oil flush?

I'd just drain and swap it. Is type C the oil you need?

 

[emdsapmgr]

Re: Lower unit oil flush?

Get a single quart of OMC Premium Blend gear oil at any Bombardier dealer. You will have some left over for next year's annual oil change...