The combustion leak test a.k.a. "blown head gasket test" may be used effectively on any type of internal combustion engine having a radiator, whether gasoline, diesel, alcohol or liquid gas powered. This test will find a combustion leak usually associated with a blown head gasket, a cracked cylinder head or engine block. Any vehicle can be subject to shady sellers attempting to mask a major issue and with all of the additives you can get from parts stores makes it easy to do.
