A addyguy Joined Sep 8, 2005 Messages 16,020 Location Canada Oct 28, 2022 #21 ISOSYN is just their term for high-quality group II+ hydrocracked base oil; Pennzoil used to call it ‘purebase’
ISOSYN is just their term for high-quality group II+ hydrocracked base oil; Pennzoil used to call it ‘purebase’