Originally Posted by RyanY
Originally Posted by Lubener
...stick with what is recommended in your manual, not the ones who have suggest and have nothing to lose.
^this is probably the best advice I have ever seen on this forum!
Wt wise yes, brand wise no way. With all the post just on this site about every brand and wt of oil they have used and had great success with, price and availability should be your guide. Any mfgrs oil will cost more, and not provide and provable better motor life. 200,000 miles on $3 a qt oil will leave you with more $$ in your pocket, then 200,000 miles on $10 a qt oil will. Mowers , if you take the most minimum care of it should last 20 years. The parts may rot off or wear out, but the motor will outlast the rest of it. Mine is 23 years old and I just replaced the original spark plug. Store brand oil ,some form of 30 wt or 15/40. whatever is handy. Newer motors don't even give you the option of a drain plug to change the oil. You gotta get creative to do it. Not impossible and definitely worth the effort.,,,