Thats nasty, although temperature will vary the pressure of the oil. When my EA runs for a while on a hot day the pressure will drop down around the red mark at idle, but has never actually touched it or passed. As for the surging, I cant help there but am interested to know what it is
EAII Falcon S
Mods: Pacemaker extractors, 2.5" Mandrel Bent Redback Exhaust, Crow Stage 2 Cam, K&N, Sony head unit, Kenwood 6x9" and Clarion 4"...
Coming: 17" rims, and King superlows..