20 
WE HAVE EVERY KIND OF FEED 

A NEW MOTOR OIL 
FOR 
HEAVY DUTY SERVICE 
Blue Seal “Master Motor Oil” is a prem- 
ium quality motor oil prepared especially 
to safeguard the operating life of truck 
and tractor motors. This new Master 
Motor Oil will lubricate —seal in the 
power —and cool the motor, as all good 
oils will do—but it also has a cleansing 
action that retards ring sticking —motor 
varnish —sludge —and other difficulties 
arising from active duty farm work. 
BLUE SEAL STER 
“ROTOR OIL 
a f// : 
My. - 

ALSO 
Penn-Bond Oils; Pure Pennsylvania Crude; Dual Duty 
Oils for special work; Blue Seal Greases for every need. 
SOLD BY 
LAKE-COOK FARM 
SUPPLY COMPANY 

