Adequate oil pressure?
#1
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Adequate oil pressure?
I just had an engine builder tell me that my 1998 454 Mag MPI (185 hrs) is "on the way out" because I'm only seeing 20psi of oil pressure w/ 20W-50 at DEAD IDLE after a hard run. I'm using Amsoil Series 2000 20W-50.
Anything above idle and I see 40psi+.
I've always been told my pressure is fine and that the pressure will be lower sometimes with the syn oils. What do you guys think?
Anything above idle and I see 40psi+.
I've always been told my pressure is fine and that the pressure will be lower sometimes with the syn oils. What do you guys think?
#4
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Join Date: Mar 2002
Location: Brandon, MS.
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I have the same engine and same oil pressure from what I can remember (sorry haven't had it out this season yet) I have 160hrs on mine so we're pretty close. I agree with rmbuilder.....take that advice with a grain of salt.....if your engine is on it's way out I guess mine is also.
#8
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According to the Merc manual that came with my motor (97 454 Mag MPI), Oil pressure can be as low as 8psi at idle. That sounds low but that is what the book says. I think I idle around 20 psi and run about 40 psi above idle.