oil mixing ?

on my 1973 evinrude do I need to use a marine grade 2stroke oil on can I use any 2 stroke oil also what is the mixing ratios thanks

Marine oil is formulated for cooler running outboard motors. Non marine two cycle oils are formulated for hot running handheld equipment Mixing ratio is 50:1. I would also use a product called Sta Bil, as most gasoline these days have ethanol which will eat up rubber hoses. There are two kinds, obviously use the marine grade.

I have a 25hp Evinrude is the oil/fuel ratio also 50:1 ?

50:1 for all Evinrude and Johnson's since 1964

thank you very much. also I notice when I have it in my 55gal drum thing i,ve been using to run it I seen the water got oily and there was like waste oil on the bottom after I drained it is this normal

headhunter954 said:

thank you very much. also I notice when I have it in my 55gal drum thing i,ve been using to run it I seen the water got oily and there was like waste oil on the bottom after I drained it is this normal

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Yep, it is normal. It is unburned fuel and oil. You have more completed burning of fuel/oil when you are running your motor on your boat at higher rpms and wide open throttle.

cool thanks yall have help me out alot thanks to all of you

cajuncook1 said:

headhunter954 said:

thank you very much. also I notice when I have it in my 55gal drum thing i,ve been using to run it I seen the water got oily and there was like waste oil on the bottom after I drained it is this normal

Click to expand...

Yep, it is normal. It is unburned fuel and oil. You have more completed burning of fuel/oil when you are running your motor on your boat at higher rpms and wide open throttle.

Click to expand...

what he said!