YES - Just take out the filter once a year and wash it in Varsol. Check for Plastic or Teflon Chips from your Cam and Main Chain Tension-ers so as the plastic debris from mal-adjusted tensioners do not plug the oil system.
Other than that use straight DINO Diesel OIL 15W40 - Delvac, Shell, AC Delco, Duron - Whatever!
If you use your 750SF a lot suggest you clean the filter and change oil twice a season clean and maintain the drive chain regularly and flush with diesel fuel and replace fork oil every 2 seasons.
My 70 750 SF0 never had Air Filters and maintained original bore diameter for some 40 years.