I have placed a deposit on a 99 Winnebago with a 454 chev. I noticed the oil pressure was up to 2/3 of the gauge. My experience has been that it normally will run at half the gauge, around 40 psi. Is this normal for the 454 in a coach or are my concerns justified. I havent paid the full purchase price yet so I still have some leverage over the dealer. I don't know what would cause the oil pressure to run high. The motor has 33K mi.