Before I purchased my jubilee, someone put a spin on filter on it. IMHO, biggie mistake. If I let mine sit for a few days and remove filter, half the oil has drained back. I've tried every filter out there. All do the same. So when I start mine after sitting for a spell, there is no oil pressure for 10-15 seconds. Depending on how long it sits.
I went to wally world and purchased 5 qts of full synthetic oil, thinking synthetic oil may provide better protection on dry starts.
Some say synthetic oil causes oil leaks. My engine was recently rebuilt, so no oil leaks.
Cold start up 40+ psi, Warm idle 20+ psi
How long does it take you to build oil pressure?