I have 2 other cars of the same era, 2004 Corvette and 2009 300C that both use the same grade oil 5-20. Both cars run at 50+ psi at normal speeds and idle around 30-40 psi hot. The Roadster runs in these ranges until it gets hot. Going by the water temp gage as there is no oil temp gage. At idle 1 bar (14.5 psi) which certainly seems low to me even at cruise speeds it barely moves above 2 bar (29 psi). These pressures are when the car is hot and moving back and forth between 90C and 100+C on the water temp gage. When cold at first start it reaches 5 bar and drops significantly after that. Reading the Owners Manual these pressures are "normal"? I live in SO California
