Bel Ray EXS Synthetic Ester 4T Engine Oil 10W 50 Size:4L Nitromousse combines a high concentration Nitromousse combines a high concentration of nitrogen into an incredibly tough micro matrix of proprietary elastomers One size fits most For use in all 4 stroke engines requiring an oil meeting the API SG SH SJ SL SM SN standards For use in all 4 stroke motorcycles with or without wet clutches including those specifying the use of a JASO MA MA1 MA2 qualified oil Use in all 4 stroke motorcycle engines with or without wet clutches Features and Benefits: Superior anti wear Reduced cylinder and ring wear Keeps ring lands and grooves free of carbon build up