Review on OTC 5021 Universal Diesel Compression by Samuel Groove

I used this product to test the compression on my 7.3 liter Ford Powerstroke diesel car. Used the correct OTC adapter and it worked great on all 8 cylinders. It feels firm and seems to hold up well under pressure. The only minor downside was that the sealant used to hold the pieces together tends to get wet and rub off your hands and clothes on first use. But still five stars because it looks really good and does its job well.