I have an 05 wrx and got the oil changed at the dealer with synthetic. My normal operating pressure while driving seems to be 65-80 depending on conditions. The oil Guage is now spiking past it's max of 100 and tries to almost appear to want to keep climbing. I took it in the them yesterday and they came out and said it was working normal. I came out because even on the way to drop it off it was spiking. Sure enough the pressure was about 60ish. He said he drove it for 5 miles with no issues. I took it home and it was just fine. This morning I go out and start it and upon startup it jumps to about 85 while at idle. On the way to work 5 mins into the drive it's peaking again. I need to take it back but don't know what to tell em to do. And they seem to not know what would cause it. I live in Az and it's always hot. Is there a certain oil they should use. It's the scottsdale dealership shouldn't they know what oil to use?
Sorry for the long post but figured id try and give as much back story as possible. Here's a pic of the Guage on the way into work today...
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