good afternoon...just wanted to make sure this 450 SEL is operating correctly.

In normal driving the temp hovers around the 175 mark and in stop and go traffic it starts to creep past that level..is this normal?

Also, the oil pressure gauge pins itself right after takeoff and comes back to the middle reading if not a little lower upon coming to a stop....hoping these readings are OK.

Today I put a full tank of Amoco Ultimate 93..damn almost 30 bucks!...but it seems to run much better with this higher octane in it.