GT_Dave
Well-Known Member
- Joined
- Dec 13, 2015
- Threads
- 11
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- 1,075
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- 690
- Location
- NE Illinois
- Vehicle(s)
- 1970 Mach 1 408EFI , 2016 GT350
You will definitely notice an increase in oil pressure after an oil change, fresh oil will always produce higher pressure, get used to it.Speaking of oil pressure, mine seems to he trending higher with each oil change. Initially (first 4000 miles or so) I saw readings around 85 psi when cold, now 100 and sometimes a little higher. And by cold, I'm talking SW Florida, temps in the 70s/80s when starting.
This 5/50 oil shows such a broad range of pressure from hot to cold, old to new and low to high revs, if confuses a lot of new GT350 owners.
Here is what has been normal in my engine after 24,000 miles:
New oil, cold @ idle = 90 psi, high revs = 120-125 psi
New oil, hot (180F+) @ idle = 60 psi, high revs = 90 -100 psi
Old oil, cold @ idle = 60 - 70 psi, high revs = 90 - 110 psi
Old oil hot @ idle = 40 - 50 psi, high revs = 80 - 90 psi