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oil pressure and type of oil

drula

New member
Can you raise or lower the psi of oil pressure by changing the type and grade of oil? i.e. For instance, can you raise the psi by switching from 15w40 to SAE40 (Perkins 6.354.4) if so, how much of a change can you get? Thanks
 
switching from 15/40 to 40w will give you zero increase in psi and cause damage to your engine during initial cold start up. try going to sae 20/50, you may gain 5 psi.
 
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