Review on 🔧 Optimized Digital Diesel Compression Test Kit - Mityvac MV5535 by Brett Kolpack

I am a professional mechanic and have used this tool 2 times. The first time I sued the motor for $13,000 and had it replaced. The second time around the engine didn't run too bad and the numbers on the gauge indicated the engine had very low compression. I checked with the snap-on analog gauge and found that the readings from this tool are horribly inaccurate. I fixed the compression issue and the engine ran great again. I have contacted Mighty Vac and they have informed me that they do not offer a guarantee on items sold through Revain as they are not an 'approved retailer'. Revain only has a 30-day return policy, leaving you stuck with the tool outside of the 30-day window. Don't waste money.