Oil For 3.5 HP Mastercraft With Tecumseh

[John D]

I had a similar question last year:
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=14;t=000266

(Edit) I guess I should add that the mower hasn't had much use since the oil change, but I will find out this summer if the new oil causes any problems.

 

[drive it forever]

The flashpoint of a dino 30w is higher then the mobil1 5 and 10w30 flashpoint.

 

[Islander]

The owners manual for my Mastercraft lawnmower recommends SAE 30W engine oil. However, if I have something like Mobil 1 5W30 synthetic on hand would it not be as good in this motor?