Technically yes, however, apparently it can loosen muck that was previously preventing oil leaks, so some say they start springing leaks once you put synthetic oil in.
Personally, I use GTX 20w50 and change it 2-3 times a year
Also synth oils tend to be higher ratings - eg API SM, SN, SN+. One thing they have done is reduce the Zddp (zinc) additives as they bugger cat convertors. Technically, this means cars with solid lifters are more susceptible to wear of the cam or lifter
That means most small engines (like briggs) could technically see more wear with high grade synthetic oils
But given the fact we see old briggs last 20 years on 500ml of sludge, I dont think the effect will be that great
