The dart has full grove mains, hemi gears in oil pump, starts at 80+ lbs when it warms up around 40 lbs at idle. Around 45-50 at highway speed, 3000 rpm. No leaks. Use 10/40 Driven motor oil because it has all of the heavy metals in it like zinc. Got some on the windshield because when I was priming it I forgot to hook up the pressure gauge, oil shot up nailed the 10’ ceiling in my shop and covered my windshield. Whole can of windex to get it off glass. Pricey but I think it’s worth it.