- Oct 5, 2011
- Vancouver BC and Italy
Hi guys, i have a modified Jeep with a common GM 350 in it, freshly rebuilt, oil pressure was decent , about 40 PSI when cold and 7-10 PSI hot, it's being pretty warm in these days and i've seen gauge go down close to zero at idle, it is non accurate but i measured the pressure with a mechanical one previously so i know that was close to 10 PSI when hot, not sure about how many PSI is now but seems really low. I'm running a Castrol Magnatec 5w40 plus a Comp Cams break in additive (i have flat tappets), i'm wondering if a Mobil 5w50 would be a better thing when warm compared to the 5w40 or is a waste of time and money. I'm kinda afraid to use thick oil like 15w50 or even 20w50, i'm obsessed about get a dizzy/cam gear because too much load due to the thick oil... I can get a 10w60 Bardahl here, what do you think? Any help would be greatly apprecciated.