Changing Lawn Tractor to Synthetic Oil
I am planning on changing my Briggs & Strat. 16.5Hp Lawn tractor to synthetic oil (10w30). It is about 3 years old and has used regular 10w30 oil in it since new. Do I need to do anything special (flush system will syn. oil or something else, etc) or just make the change.
I am also thinking about changing my push lawn mower (Tucumseh 4.25Hp) which is about 7 years old and says to use SAE30 oil. Would the synthetic 10w30 work well for it also or do they have SAE30 synthetic?