older car before 1985 yes newer cars after that no most newer vehicles require 5w30 or 10w30
10 w-40
use 10 w 30 or 40 does not really matter
Use any 10 - 40 W oil. You can also use a single grade 40 W oil if the mower is old and much used.
Use any JASO-MA or MA2 approved oil of weight 10-40 W or 15 - 40 W.
10 w 40
10 w 40 motorcycle oil
always use four stroke motorcycle oil. valvoline, castrol, Honda etc. I use 10 w 40. 20 w 50 is a little too thick unless your motor is worn out. NEVER use oil for cars and trucks.
20-w/40 is good, you can use 10 w 30 also. If very hot climate you can use 20 w 50
10 w 40 is what honda recomends
10 W 40
10-w-40 works the best.