Petro can't be used as a suffix but as a prefix such as in the word Petoleum
petro
PETRO
8.67 lbs per gallon
About 8.35 pounds per US gallon.
Petro Tkachenko was born in 1878.
Petro Nishchynsky was born in 1832.
Jim Petro was born in 1948.
Petro Nakonechnyi was born in 1982.
Petro Voinovsky died in 1996.
Petro Voinovsky was born in 1913.
Petro Mirchuk was born in 1913.
Petro Mirchuk died in 1999.
Petro Korol was born in 1941.
Petro Marko died in 1991.
Petro Doroshenko was born in 1627.
Petro Stojan died in 1961.