i bought a 1973 evinrude 18 hp and was curiuos how much oil i should add to each gallon of gas

2.6 ounces per gallon for 50:1 ratio

Get yourself one of these. You can find them almost everywhere.

 

Bass Pro is a good source to get one. 

21 hours ago, iabass8 said:

Get yourself one of these. You can find them almost everywhere.

 

This is what I use, very handy and fool proof.

On 7/8/2016 at 7:27 PM, iabass8 said:

Get yourself one of these. You can find them almost everywhere.

 

x3 These things are handier than a pocket on a t-shirt. Stop by walmart and grab one for like $3. Just dump the oil in until it reaches the mark of how many gallons you are going to put in, dump it in, and fill the tank. Completely fool proof, no guessing if you're between marks on the oil container. Well worth tracking one down. 

After you buy one of those, check out Lee Roys Ramblings web site.  It appears to be down at the moment, but its gone down before and always come back.  Lee Roy will teach you a lot about your new motor.

On 7/8/2016 at 7:27 PM, iabass8 said:

Get yourself one of these. You can find them almost everywhere.

 

Learned that trick racing enduro dirt bikes