Just purchased a Generac 8000-10000 watt generator because of the inland hurricane here in Iowa. Oil is scarce at the moment so my options are royal purple 30w SJ, Castrol dino 10w30, or Pennzoil 5w30 SN synthetic.
The manual calls for generac 5w30 oil for colder temps and straight 30 for higher temps but makes no mention of rating (sj, sm, sn, etc)
It's going to be 80-90 degrees here so I want something that is not going to burn my engine up.
have read the SJ oils are not API certified because of high Zinc content. Which theoretically would be better.
Any insight on this?
The manual calls for generac 5w30 oil for colder temps and straight 30 for higher temps but makes no mention of rating (sj, sm, sn, etc)
It's going to be 80-90 degrees here so I want something that is not going to burn my engine up.
have read the SJ oils are not API certified because of high Zinc content. Which theoretically would be better.
Any insight on this?