[Mydiamond]

My 33 open usually runs 40 - 60 psi.

Engines are crusader, gas. 454 xl

After changing the oil at the end of the season, oil pressure jumped to 80 psi.

Same type oil and filter.

Changed oil filter again per forum suggestions - still issues

Sending unit new.

Anyone have experience changing oil pressure release?

Any other suggestions would be appreciated.

[jclark003]

It’s not unusual for new oil to kick pressure up a bit, especially when cold. As long as it doesn’t climb any higher I would run it for a while and see if it stabilizes.

[Sans Peur]

That's a pretty big jump. Try changing the filter first. Could be a mfg issue with the filter.

[Mydiamond]

Closing this out.
After trying
New filter
Oil flush
Change oil twice
Changed sending unit
…..
I purchased a high oil pressure relief valve.
$6 part. (Recommend getting new O rings also.
Thank goodness it was starboard engine .

Took off hoses and 2 bolts - replace relief valve.

Good as new

Thanks to all of the suggestions along the way.