Thoughts On Oil Viscosity?
Thread Starter
Instructor
Joined: Jan 2006
Posts: 223
Likes: 14
From: South Florida
Thoughts On Oil Viscosity?
Quick question. Stock 350, 72k original miles. Never rebuilt. Pretty tight motor overall. What oil weight would you experts recommend? 10w30? 10w40? 20w50? Synthetic or not? I notice that my oil pressure seems lower with the lighter weight oil - is that possible? I also live in a hot climate. Thoughts please? Thanks in advance!
Burning Brakes
Joined: Sep 2004
Posts: 1,167
Likes: 2
From: Ft.Worth Texas
Being in Florida I'd probably use a straight 30 wt oil. Nothing at all wrong with the synthetics but changing oil and filter often and using any quality oil works well too. 72K is not many miles but there is some bearing wear therefore a bit lower oil pressure....maybe 15-20 at idle and increase to 30-40 while driving. You shouldn't need the 10-30 wt oil. edit.......but if you like it, use it. Won't hurt a thing.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by David Ey
Being in Florida I'd probably use a straight 30 wt oil. Nothing at all wrong with the synthetics but changing oil and filter often and using any quality oil works well too. 72K is not many miles but there is some bearing wear therefore a bit lower oil pressure....maybe 15-20 at idle and increase to 30-40 while driving. You shouldn't need the 10-30 wt oil. edit.......but if you like it, use it. Won't hurt a thing.
