• If you like antique engines, vintage tractors or old iron machinery, register and join us. When you register on Smokstak, please give complete answers and fill in the blanks. - IF YOU ARE ON WIRELESS OR SATELLITE, ENTER YOUR CITY AND STATE! NO ZIPCODES! All registrations are manually approved.

Two cycle gas mixture?

Bill Sherlock

Subscriber
Age
75
Last Subscription Date
07/09/2019
I'd use a 16-1 mixture to start with until I found information to indicate otherwise. The Pro Mac 60 shows 20 - 1 but I don't know how close that is to your saw.

Bill
 

Robrep

Registered
i think it is 20 to 1 with 30 wt oil, with new oils it is different. either way too much oil is better then too little. I have a Mac BP1 with the same question someone replied 32 to 1 with the newer 2 cycle oils. Ive seen this same ratio for older outboard motors.
 

JoeCB

Subscriber
Last Subscription Date
03/19/2020
Us old outboard motor guys say …. "OIL is cheap , PARTS expensive"

Joe
 

Andrew Mackey

Moderator
Last Subscription Date
05/14/2017
If the saw is early 1960s or older, I would not use modern lubes in it. Use either SAE 30 non-detergent or TCW-3 OIL only. The newer cut lubes will starve the older slower engines for lubrication. i am sure your saw is not a 22,000 RPM screamer like they make nowdays! Not much difference between 16 and 20:1 ratios, you just have to clean out the exhaust ports and mufflers more often.
 
Top