More just to hand from Penrite's oil Techs.
Penrite SEFS 30 is not an oil for modern cars, of course, coming in at API SG.
API petrol ratings are now of the form S*, with SN being the latest/highest �SG came out in 1989.
The �MS� rating to which the manufacturer referred is now API SD, so the (higher) SG is suitable.
Penrite has an oil at SAE 25W-70, which covers for an SAE 40 and is rated at API SG. This is Penrite "Classic Medium".
The code for 5L is CLASM005.
