I assume you're refering to an Accusump. You can get them in 1, 2 or 3 qt capacity. I've got a 2 qt system. It's cheap protection for the engine, especially if you have a $$$$$ side oiler, or any engine. If the car sits over an extended period, or even if it's fired up on a daily basis, it nice to see 30 lbs
oil pressure before you turn the key. It's really nice when making hard turns on a road course, knowing that if you momentarily lose
oil pressure due to
oil not being picked up from the pan, the Accusump will inject oil as needed to maintain pressure I've never noticed a drop in pressure, but when you're concentrating on high speed turns, you tend not to be watching the oil pressure gauge at the time.