MCD
NAXJA Forum User
- Location
- Perryton TX
for some reason when i start my jeep it reads about 77psi when cold. i recently started running penzoil 1030 instead of trop arctic 1040. with the 10 40 it was just over 40 psi cold and seldom got over 58psi at any time. i dont really know wats up since the 1030 isnt as thick shouldnt my readings be lower. i know that penzoil is wax based but i dont think the trop arctic was. i am really at a loss ,though 77 psi isnt bad just alot higher than normal. it still reads 37psi at low idle which is ok in the book. but 1000 rev and up its over 50psi.i just need some info.