joes mack Posted December 8, 2020 Share Posted December 8, 2020 what should the oil psi be on a 8v92 fresh oil and filter change about 20 hours ago when the truck is cold it shows about 60 psi at idle when it warms up it shows about 10 psi at idle when driving it shows about 80 cold and 35-40 when its at operating temp. when i let off the throttle to stop the low oil psi alarm goes off for a second and oil psi is about 5 psi. Quote Link to comment Share on other sites More sharing options...
joes mack Posted December 8, 2020 Author Share Posted December 8, 2020 i use 15-40 delo 400 oil in all of our trucks. mack, cat, and the detroits. Quote Link to comment Share on other sites More sharing options...
carlotpilot Posted December 8, 2020 Share Posted December 8, 2020 I have always been told 10-15 psi at op temp at idle was ok 45 -50 at hwy spd . I have not owned a 92 but a couple 8-71 s over the years were about the same Quote Link to comment Share on other sites More sharing options...
Popular Post 1965 Posted December 8, 2020 Popular Post Share Posted December 8, 2020 Oil pressure is good, but 2 stroke Detroit’s need straight weight oil. Preferably delo 100 40w. 30 if in cold weather. 4 Quote Link to comment Share on other sites More sharing options...
joes mack Posted December 10, 2020 Author Share Posted December 10, 2020 thanks guys i have never had any dealings with 2 stroke detroits until we got the last two trucks and one is a 6 and the newest to us is a 8 both seem to be good engines. Quote Link to comment Share on other sites More sharing options...
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