TimFZ
Club Member
Had a great drive in my S30 this week but in the hot weather and after a longer faster drive I noticed the oil pressure drops a lot at idle when hot. Its fine when cold and in both cases increases as revs go up somewhat.
I put in 15W40 Millers classic oil. Would you guys recommend a thicker oil to maintain pressure? 20W50 may be better in the summer. Any thoughts?
I put in 15W40 Millers classic oil. Would you guys recommend a thicker oil to maintain pressure? 20W50 may be better in the summer. Any thoughts?