Took the CS out for the first time in a month. Drove it about 8 miles on the freeway. Car behaved normally. When I exited, the car seem to lose power, a lot. It barely moved under it's own power. Looked down at the gauges, I noticed the oil pressure needle was fluctuating widely at the right side of the gauge (at 140 lb/in2). Luckily there was a red traffic light. I turned the engine off and on while stopped. The needle settled at the 70 (mid-gauge) area but still fluctuates quite a bit. The car had a bit more power but still pretty sluggish. Took the car home on the side road. Part of the drive was a 3-4% grade and the car could not generate enough power to keep the speed at 50mph, slowing down to about 30mph after 1/2 a mile. Luckily, there was no traffic. Searched this site and google but no solution - only suggestion was bad sender but that didn't mention loss of power. ( https://www.ferrarichat.com/forum/threads/360-oil-pressure-weirdness.569370/ ) Engine bay smell test normal. No burnt clutch or awful/unrecognizable smell. Just the usual smell. (edited) 2004 CS. 30K miles. Any idea? Also, will call the mechanic and post an update once the problem is solved.